AI Earnings Predictions for Comfort Systems USA Inc. (FIX)

Comfort Systems USA, Inc._February 19, 2026 0001035983false00010359832026-02-192026-02-19 ​ ​

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549 ​

FORM 8-K

​

CURRENT REPORT

Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 ​ Date of Report (Date of earliest event reported) February 19, 2026 ​ Comfort Systems USA, Inc. (Exact name of registrant as specified in its charter) ​ ​

​

​

​

​

Delaware ​ ​ ​ 1-13011 ​ ​ ​ 76-0526487

(State or other jurisdiction ​ (Commission ​ (IRS Employer

of incorporation) ​ File Number) ​ Identification No.)

​ ​

​

​

9753 Katy Freeway, Suite 700 ​ ​ ​ ​

Houston, Texas ​ 77024

(Address of principal executive offices) ​ (Zip Code)

​ Registrant’s telephone number, including area code (713) 830-9600 ​ 675 Bering Drive, Suite 400 Houston, Texas 77057 (Former name or former address, if changed since last report.) ​ Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ​ ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) ​ Securities registered pursuant to Section 12(b) of the Act: ​

Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, $0.01 par value FIX New York Stock Exchange

​ Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). ​ Emerging growth company ☐ ​ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ ​ ​

ITEM 2.02        Results of Operations and Financial Condition ​ Attached and incorporated herein by reference as Exhibit 99.1 is a copy of a press release of Comfort Systems USA, Inc. (the “Company”) dated February 19, 2026 reporting the Company’s financial results for the fourth quarter and full year of 2025. ​ The information contained in this Item 2.02 of this Current Report on Form 8-K, including Exhibit 99.1 attached hereto, is being furnished and shall not be deemed “filed” for any purpose, and shall not be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, except as expressly set forth by specific reference in such filing. ​ ITEM 8.01           Other Events ​ Attached and incorporated herein by reference as Exhibit 99.2 is a copy of a press release of the Company dated February 19, 2026 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, March 6, 2026. ​ ITEM 9.01        Financial Statements and Exhibits ​ (d) The following Exhibits are included herein: ​ Exhibit 99.1 Press Release of Comfort Systems USA, Inc. dated February 19, 2026 reporting the Company’s financial results for the fourth quarter and full year of 2025. ​ Exhibit 99.2 Press Release of Comfort Systems USA, Inc. dated February 19, 2026 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, March 6, 2026. ​

2

EXHIBIT INDEX

​ ​

​

​

Exhibit Number ​ ​ ​ Exhibit Title or Description

​ ​ ​

99.1 ​ Press Release of Comfort Systems USA, Inc. dated February 19, 2026 reporting the Company’s financial results for the fourth quarter and full year of 2025.

​ ​ ​

99.2 ​ Press Release of Comfort Systems USA, Inc. dated February 19, 2026 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, March 6, 2026.

​ ​ ​

104 ​ Cover Page Interactive Data File (the cover page XBRL tags are embedded within the Inline XBRL document).

​ ​ ​

​ ​ ​

3

SIGNATURES

​ Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. ​ ​

​

​

​ ​

COMFORT SYSTEMS USA, INC.

​ ​ ​

​ ​ ​

​ By: /s/ Rachel R. Eslicker

​ ​ Rachel R. Eslicker, Senior Vice President and General Counsel

​ Date:      February 19, 2026 ​

4

Comfort Systems USA, Inc._October 23, 2025 0001035983false00010359832025-10-232025-10-23 ​ ​

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549 ​

FORM 8-K

​

CURRENT REPORT

Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 ​ Date of Report (Date of earliest event reported) October 23, 2025 ​ Comfort Systems USA, Inc. (Exact name of registrant as specified in its charter) ​ ​

​

​

​

​

Delaware

1-13011

76-0526487

(State or other jurisdiction ​ (Commission ​ (IRS Employer

of incorporation) ​ File Number) ​ Identification No.)

​ ​

​

​

675 Bering Drive, Suite 400

​

Houston, Texas ​ 77057

(Address of principal executive offices) ​ (Zip Code)

​ Registrant’s telephone number, including area code (713) 830-9600 ​ (Former name or former address, if changed since last report.) ​ Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ​ ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) ​ Securities registered pursuant to Section 12(b) of the Act: ​

Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, $0.01 par value FIX New York Stock Exchange

​ Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). ​ Emerging growth company ☐ ​ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ ​ ​ ​

ITEM 2.02        Results of Operations and Financial Condition ​ Attached and incorporated herein by reference as Exhibit 99.1 is a copy of a press release of Comfort Systems USA, Inc. (the “Company”) dated October 23, 2025 reporting the Company’s financial results for the third quarter of 2025. ​ The information contained in this Item 2.02 of this Current Report on Form 8-K, including Exhibit 99.1 attached hereto, is being furnished and shall not be deemed “filed” for any purpose, and shall not be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, except as expressly set forth by specific reference in such filing. ​ ITEM 8.01           Other Events ​ Attached and incorporated herein by reference as Exhibit 99.2 is a copy of a press release of the Company dated October 23, 2025 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, November 13, 2025. ​ ITEM 9.01        Financial Statements and Exhibits ​ (d) The following Exhibits are included herein: ​ Exhibit 99.1 Press Release of Comfort Systems USA, Inc. dated October 23, 2025 reporting the Company’s financial results for the third quarter of 2025. ​ Exhibit 99.2 Press Release of Comfort Systems USA, Inc. dated October 23, 2025 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, November 13, 2025. ​

2

EXHIBIT INDEX

​ ​

​

​

Exhibit Number

Exhibit Title or Description

​ ​ ​

99.1 ​ Press Release of Comfort Systems USA, Inc. dated October 23, 2025 reporting the Company’s financial results for the third quarter of 2025.

​ ​ ​

99.2 ​ Press Release of Comfort Systems USA, Inc. dated October 23, 2025 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, November 13, 2025.

​ ​ ​

104 ​ Cover Page Interactive Data File (the cover page XBRL tags are embedded within the Inline XBRL document).

​ ​ ​

​ ​ ​

3

SIGNATURES

​ Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. ​ ​

​

​

​ ​

COMFORT SYSTEMS USA, INC.

​ ​ ​

​ ​ ​

​ By: /s/ Laura F. Howell

​ ​ Laura F. Howell, Senior Vice President and General Counsel

​ Date:      October 23, 2025 ​

4

0001035983false00010359832025-07-242025-07-24 ​ ​

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549 ​

FORM 8-K

​

CURRENT REPORT

Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 ​ Date of Report (Date of earliest event reported) July 24, 2025 ​ Comfort Systems USA, Inc. (Exact name of registrant as specified in its charter) ​ ​

​

​

​

​

Delaware

1-13011

76-0526487

(State or other jurisdiction ​ (Commission ​ (IRS Employer

of incorporation) ​ File Number) ​ Identification No.)

​ ​

​

​

675 Bering Drive, Suite 400

​

Houston, Texas ​ 77057

(Address of principal executive offices) ​ (Zip Code)

​ Registrant’s telephone number, including area code (713) 830-9600 ​ (Former name or former address, if changed since last report.) ​ Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ​ ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) ​ Securities registered pursuant to Section 12(b) of the Act: ​

Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, $0.01 par value FIX New York Stock Exchange

​ Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). ​ Emerging growth company ☐ ​ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ ​ ​ ​

ITEM 2.02        Results of Operations and Financial Condition ​ Attached and incorporated herein by reference as Exhibit 99.1 is a copy of a press release of Comfort Systems USA, Inc. (the “Company”) dated July 24, 2025 reporting the Company’s financial results for the second quarter of 2025. ​ The information contained in this Item 2.02 of this Current Report on Form 8-K, including Exhibit 99.1 attached hereto, is being furnished and shall not be deemed “filed” for any purpose, and shall not be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, except as expressly set forth by specific reference in such filing. ​ ITEM 8.01           Other Events ​ Attached and incorporated herein by reference as Exhibit 99.2 is a copy of a press release of the Company dated July 24, 2025 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, August 14, 2025. ​ ITEM 9.01        Financial Statements and Exhibits ​ (d) The following Exhibits are included herein: ​ Exhibit 99.1 Press Release of Comfort Systems USA, Inc. dated July 24, 2025 reporting the Company’s financial results for the second quarter of 2025. ​ Exhibit 99.2 Press Release of Comfort Systems USA, Inc. dated July 24, 2025 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, August 14, 2025. ​

2

EXHIBIT INDEX

​ ​

​

​

Exhibit Number

Exhibit Title or Description

​ ​ ​

99.1 ​ Press Release of Comfort Systems USA, Inc. dated July 24, 2025 reporting the Company’s financial results for the second quarter of 2025.

​ ​ ​

99.2 ​ Press Release of Comfort Systems USA, Inc. dated July 24, 2025 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, August 14, 2025.

​ ​ ​

104 ​ Cover Page Interactive Data File (the cover page XBRL tags are embedded within the Inline XBRL document).

​ ​ ​

​ ​ ​

3

SIGNATURES

​ Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. ​ ​

​

​

​ ​

COMFORT SYSTEMS USA, INC.

​ ​ ​

​ ​ ​

​ By: /s/ Laura F. Howell

​ ​ Laura F. Howell, Senior Vice President and General Counsel

​ Date:      July 24, 2025 ​

4

0001035983false00010359832025-04-242025-04-24 ​ ​

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549 ​

FORM 8-K

​

CURRENT REPORT

Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 ​ Date of Report (Date of earliest event reported) April 24, 2025 ​ Comfort Systems USA, Inc. (Exact name of registrant as specified in its charter) ​ ​

​

​

​

​

Delaware

1-13011

76-0526487

(State or other jurisdiction ​ (Commission ​ (IRS Employer

of incorporation) ​ File Number) ​ Identification No.)

​ ​

​

​

675 Bering Drive, Suite 400

​

Houston, Texas ​ 77057

(Address of principal executive offices) ​ (Zip Code)

​ Registrant’s telephone number, including area code (713) 830-9600 ​ (Former name or former address, if changed since last report.) ​ Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ​ ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) ​ Securities registered pursuant to Section 12(b) of the Act: ​

Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, $0.01 par value FIX New York Stock Exchange

​ Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). ​ Emerging growth company ☐ ​ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ ​ ​ ​

ITEM 2.02        Results of Operations and Financial Condition ​ Attached and incorporated herein by reference as Exhibit 99.1 is a copy of a press release of Comfort Systems USA, Inc. (the “Company”) dated April 24, 2025 reporting the Company’s financial results for the first quarter of 2025. ​ The information contained in this Item 2.02 of this Current Report on Form 8-K, including Exhibit 99.1 attached hereto, is being furnished and shall not be deemed “filed” for any purpose, and shall not be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, except as expressly set forth by specific reference in such filing. ​ ITEM 8.01           Other Events ​ Attached and incorporated herein by reference as Exhibit 99.2 is a copy of a press release of the Company dated April 24, 2025 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, May 16, 2025. ​ ITEM 9.01        Financial Statements and Exhibits ​ (d) The following Exhibits are included herein: ​ Exhibit 99.1 Press Release of Comfort Systems USA, Inc. dated April 24, 2025 reporting the Company’s financial results for the first quarter of 2025. ​ Exhibit 99.2 Press Release of Comfort Systems USA, Inc. dated April 24, 2025 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, May 16, 2025. ​

2

EXHIBIT INDEX

​ ​

​

​

Exhibit Number

Exhibit Title or Description

​ ​ ​

99.1 ​ Press Release of Comfort Systems USA, Inc. dated April 24, 2025 reporting the Company’s financial results for the first quarter of 2025.

​ ​ ​

99.2 ​ Press Release of Comfort Systems USA, Inc. dated April 24, 2025 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, May 16, 2025.

​ ​ ​

104 ​ Cover Page Interactive Data File (the cover page XBRL tags are embedded within the Inline XBRL document).

​ ​ ​

​ ​ ​

3

SIGNATURES

​ Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. ​ ​

​

​

​ ​

COMFORT SYSTEMS USA, INC.

​ ​ ​

​ ​ ​

​ By: /s/ Laura F. Howell

​ ​ Laura F. Howell, Senior Vice President and General Counsel

​ Date:      April 24, 2025 ​

4

0001035983false00010359832025-02-202025-02-20 ​ ​

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549 ​

FORM 8-K

​

CURRENT REPORT

Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 ​ Date of Report (Date of earliest event reported) February 20, 2025 ​ Comfort Systems USA, Inc. (Exact name of registrant as specified in its charter) ​ ​

​

​

​

​

Delaware

1-13011

76-0526487

(State or other jurisdiction ​ (Commission ​ (IRS Employer

of incorporation) ​ File Number) ​ Identification No.)

​ ​

​

​

675 Bering Drive, Suite 400

​

Houston, Texas ​ 77057

(Address of principal executive offices) ​ (Zip Code)

​ Registrant’s telephone number, including area code (713) 830-9600 ​ (Former name or former address, if changed since last report.) ​ Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ​ ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) ​ Securities registered pursuant to Section 12(b) of the Act: ​

Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, $0.01 par value FIX New York Stock Exchange

​ Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). ​ Emerging growth company ☐ ​ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ ​ ​ ​

ITEM 2.02        Results of Operations and Financial Condition ​ Attached and incorporated herein by reference as Exhibit 99.1 is a copy of a press release of Comfort Systems USA, Inc. (the “Company”) dated February 20, 2025 reporting the Company’s financial results for the fourth quarter and full year of 2024. ​ The information contained in this Item 2.02 of this Current Report on Form 8-K, including Exhibit 99.1 attached hereto, is being furnished and shall not be deemed “filed” for any purpose, and shall not be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, except as expressly set forth by specific reference in such filing. ​ ITEM 8.01           Other Events ​ Attached and incorporated herein by reference as Exhibit 99.2 is a copy of a press release of the Company dated February 20, 2025 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, March 10, 2025. ​ ITEM 9.01        Financial Statements and Exhibits ​ (d) The following Exhibits are included herein: ​ Exhibit 99.1 Press Release of Comfort Systems USA, Inc. dated February 20, 2025 reporting the Company’s financial results for the fourth quarter and full year of 2024. ​ Exhibit 99.2 Press Release of Comfort Systems USA, Inc. dated February 20, 2025 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, March 10, 2025. ​

2

EXHIBIT INDEX

​ ​

​

​

Exhibit Number

Exhibit Title or Description

​ ​ ​

99.1 ​ Press Release of Comfort Systems USA, Inc. dated February 20, 2025 reporting the Company’s financial results for the fourth quarter and full year of 2024.

​ ​ ​

99.2 ​ Press Release of Comfort Systems USA, Inc. dated February 20, 2025 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, March 10, 2025.

​ ​ ​

104 ​ Cover Page Interactive Data File (the cover page XBRL tags are embedded within the Inline XBRL document).

​ ​ ​

​ ​ ​

3

SIGNATURES

​ Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. ​ ​

​

​

​ ​

COMFORT SYSTEMS USA, INC.

​ ​ ​

​ ​ ​

​ By: /s/ Laura F. Howell

​ ​ Laura F. Howell, Senior Vice President and General Counsel

​ Date:      February 20, 2025 ​

4

0001035983false00010359832024-10-242024-10-24 ​ ​

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549 ​

FORM 8-K

​

CURRENT REPORT

Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 ​ Date of Report (Date of earliest event reported) October 24, 2024 ​ Comfort Systems USA, Inc. (Exact name of registrant as specified in its charter) ​ ​

​

​

​

​

Delaware

1-13011

76-0526487

(State or other jurisdiction ​ (Commission ​ (IRS Employer

of incorporation) ​ File Number) ​ Identification No.)

​ ​

​

​

675 Bering Drive, Suite 400

​

Houston, Texas ​ 77057

(Address of principal executive offices) ​ (Zip Code)

​ Registrant’s telephone number, including area code (713) 830-9600 ​ (Former name or former address, if changed since last report.) ​ Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ​ ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) ​ Securities registered pursuant to Section 12(b) of the Act: ​

Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, $0.01 par value FIX New York Stock Exchange

​ Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). ​ Emerging growth company ☐ ​ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ ​ ​ ​

ITEM 2.02        Results of Operations and Financial Condition ​ Attached and incorporated herein by reference as Exhibit 99.1 is a copy of a press release of Comfort Systems USA, Inc. (the “Company”) dated October 24, 2024 reporting the Company’s financial results for the third quarter of 2024. ​ The information contained in this Item 2.02 of this Current Report on Form 8-K, including Exhibit 99.1 attached hereto, is being furnished and shall not be deemed “filed” for any purpose, and shall not be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, except as expressly set forth by specific reference in such filing. ​ ITEM 8.01           Other Events ​ Attached and incorporated herein by reference as Exhibit 99.2 is a copy of a press release of the Company dated October 24, 2024 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, November 14, 2024. ​ ITEM 9.01        Financial Statements and Exhibits ​ (d) The following Exhibits are included herein: ​ Exhibit 99.1 Press Release of Comfort Systems USA, Inc. dated October 24, 2024 reporting the Company’s financial results for the third quarter of 2024. ​ Exhibit 99.2 Press Release of Comfort Systems USA, Inc. dated October 24, 2024 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, November 14, 2024. ​

2

EXHIBIT INDEX

​ ​

​

​

Exhibit Number

Exhibit Title or Description

​ ​ ​

99.1 ​ Press Release of Comfort Systems USA, Inc. dated October 24, 2024 reporting the Company’s financial results for the third quarter of 2024.

​ ​ ​

99.2 ​ Press Release of Comfort Systems USA, Inc. dated October 24, 2024 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, November 14, 2024.

​ ​ ​

104 ​ Cover Page Interactive Data File (the cover page XBRL tags are embedded within the Inline XBRL document).

​ ​ ​

​ ​ ​

3

SIGNATURES

​ Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. ​ ​

​

​

​ ​

COMFORT SYSTEMS USA, INC.

​ ​ ​

​ ​ ​

​ By: /s/ Laura F. Howell

​ ​ Laura F. Howell, Senior Vice President and General Counsel

​ Date:      October 24, 2024 ​

4

0001035983false00010359832024-07-252024-07-25 ​ ​

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549 ​

FORM 8-K

​

CURRENT REPORT

Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 ​ Date of Report (Date of earliest event reported) July 25, 2024 ​ Comfort Systems USA, Inc. (Exact name of registrant as specified in its charter) ​ ​

​

​

​

​

Delaware

1-13011

76-0526487

(State or other jurisdiction ​ (Commission ​ (IRS Employer

of incorporation) ​ File Number) ​ Identification No.)

​ ​

​

​

675 Bering Drive, Suite 400

​

Houston, Texas ​ 77057

(Address of principal executive offices) ​ (Zip Code)

​ Registrant’s telephone number, including area code (713) 830-9600 ​ (Former name or former address, if changed since last report.) ​ Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ​ ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) ​ Securities registered pursuant to Section 12(b) of the Act: ​

Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, $0.01 par value FIX New York Stock Exchange

​ Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). ​ Emerging growth company ☐ ​ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ ​ ​ ​

ITEM 2.02        Results of Operations and Financial Condition ​ Attached and incorporated herein by reference as Exhibit 99.1 is a copy of a press release of Comfort Systems USA, Inc. (the “Company”) dated July 25, 2024 reporting the Company’s financial results for the second quarter of 2024. ​ The information contained in this Item 2.02 of this Current Report on Form 8-K, including Exhibit 99.1 attached hereto, is being furnished and shall not be deemed “filed” for any purpose, and shall not be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, except as expressly set forth by specific reference in such filing. ​ ITEM 8.01           Other Events ​ Attached and incorporated herein by reference as Exhibit 99.2 is a copy of a press release of the Company dated July 25, 2024 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, August 12, 2024. ​ ITEM 9.01        Financial Statements and Exhibits ​ (d) The following Exhibits are included herein: ​ Exhibit 99.1 Press Release of Comfort Systems USA, Inc. dated July 25, 2024 reporting the Company’s financial results for the second quarter of 2024. ​ Exhibit 99.2 Press Release of Comfort Systems USA, Inc. dated July 25, 2024 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, August 12, 2024. ​

2

EXHIBIT INDEX

​ ​

​

​

Exhibit Number

Exhibit Title or Description

​ ​ ​

99.1 ​ Press Release of Comfort Systems USA, Inc. dated July 25, 2024 reporting the Company’s financial results for the second quarter of 2024.

​ ​ ​

99.2 ​ Press Release of Comfort Systems USA, Inc. dated July 25, 2024 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, August 12, 2024.

​ ​ ​

104 ​ Cover Page Interactive Data File (the cover page XBRL tags are embedded within the Inline XBRL document).

​ ​ ​

​ ​ ​

3

SIGNATURES

​ Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. ​ ​

​

​

​ ​

COMFORT SYSTEMS USA, INC.

​ ​ ​

​ ​ ​

​ By: /s/ Laura F. Howell

​ ​ Laura F. Howell, Senior Vice President and General Counsel

​ Date:      July 25, 2024 ​

4

0001035983false00010359832024-04-252024-04-25 ​ ​

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549 ​

FORM 8-K

​

CURRENT REPORT

Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 ​ Date of Report (Date of earliest event reported) April 25, 2024 ​ Comfort Systems USA, Inc. (Exact name of registrant as specified in its charter) ​ ​

​

​

​

​

Delaware

1-13011

76-0526487

(State or other jurisdiction ​ (Commission ​ (IRS Employer

of incorporation) ​ File Number) ​ Identification No.)

​ ​

​

​

675 Bering Drive, Suite 400

​

Houston, Texas ​ 77057

(Address of principal executive offices) ​ (Zip Code)

​ Registrant’s telephone number, including area code (713) 830-9600 ​ (Former name or former address, if changed since last report.) ​ Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ​ ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) ​ Securities registered pursuant to Section 12(b) of the Act: ​

Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, $0.01 par value FIX New York Stock Exchange

​ Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). ​ Emerging growth company ☐ ​ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ ​ ​ ​

ITEM 2.02        Results of Operations and Financial Condition ​ Attached and incorporated herein by reference as Exhibit 99.1 is a copy of a press release of Comfort Systems USA, Inc. (the “Company”) dated April 25, 2024 reporting the Company’s financial results for the first quarter of 2024. ​ The information contained in this Item 2.02 of this Current Report on Form 8-K, including Exhibit 99.1 attached hereto, is being furnished and shall not be deemed “filed” for any purpose, and shall not be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, except as expressly set forth by specific reference in such filing. ​ ITEM 8.01           Other Events ​ Attached and incorporated herein by reference as Exhibit 99.2 is a copy of a press release of the Company dated April 25, 2024 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, May 13, 2024. ​ ITEM 9.01        Financial Statements and Exhibits ​ (d) The following Exhibits are included herein: ​ Exhibit 99.1 Press Release of Comfort Systems USA, Inc. dated April 25, 2024 reporting the Company’s financial results for the first quarter of 2024. ​ Exhibit 99.2 Press Release of Comfort Systems USA, Inc. dated April 25, 2024 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, May 13, 2024. ​

2

EXHIBIT INDEX

​ ​

​

​

Exhibit Number

Exhibit Title or Description

​ ​ ​

99.1 ​ Press Release of Comfort Systems USA, Inc. dated April 25, 2024 reporting the Company’s financial results for the first quarter of 2024.

​ ​ ​

99.2 ​ Press Release of Comfort Systems USA, Inc. dated April 25, 2024 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, May 13, 2024.

​ ​ ​

104 ​ Cover Page Interactive Data File (the cover page XBRL tags are embedded within the Inline XBRL document).

​ ​ ​

​ ​ ​

3

SIGNATURES

​ Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. ​ ​

​

​

​ ​

COMFORT SYSTEMS USA, INC.

​ ​ ​

​ ​ ​

​ By: /s/ Laura F. Howell

​ ​ Laura F. Howell, Senior Vice President and General Counsel

​ Date:      April 25, 2024 ​

4

0001035983false00010359832024-02-222024-02-22 ​ ​

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549 ​

FORM 8-K

​

CURRENT REPORT

Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 ​ Date of Report (Date of earliest event reported) February 22, 2024 ​ Comfort Systems USA, Inc. (Exact name of registrant as specified in its charter) ​ ​

​

​

​

​

Delaware

1-13011

76-0526487

(State or other jurisdiction ​ (Commission ​ (IRS Employer

of incorporation) ​ File Number) ​ Identification No.)

​ ​

​

​

675 Bering Drive, Suite 400

​

Houston, Texas ​ 77057

(Address of principal executive offices) ​ (Zip Code)

​ Registrant’s telephone number, including area code (713) 830-9600 ​ (Former name or former address, if changed since last report.) ​ Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ​ ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) ​ Securities registered pursuant to Section 12(b) of the Act: ​

Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, $0.01 par value FIX New York Stock Exchange

​ Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). ​ Emerging growth company ☐ ​ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ ​ ​ ​

ITEM 2.02        Results of Operations and Financial Condition ​ Attached and incorporated herein by reference as Exhibit 99.1 is a copy of a press release of Comfort Systems USA, Inc. (the “Company”) dated February 22, 2024 reporting the Company’s financial results for the fourth quarter and full year of 2023. ​ The information contained in this Item 2.02 of this Current Report on Form 8-K, including Exhibit 99.1 attached hereto, is being furnished and shall not be deemed “filed” for any purpose, and shall not be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, except as expressly set forth by specific reference in such filing. ​ ITEM 8.01           Other Events ​ Attached and incorporated herein by reference as Exhibit 99.2 is a copy of a press release of the Company dated February 22, 2024 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, March 8, 2024. ​ ITEM 9.01        Financial Statements and Exhibits ​ (d) The following Exhibits are included herein: ​ Exhibit 99.1 Press Release of Comfort Systems USA, Inc. dated February 22, 2024 reporting the Company’s financial results for the fourth quarter and full year of 2023. ​ Exhibit 99.2 Press Release of Comfort Systems USA, Inc. dated February 22, 2024 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, March 8, 2024. ​

2

EXHIBIT INDEX

​ ​

​

​

Exhibit Number

Exhibit Title or Description

​ ​ ​

99.1 ​ Press Release of Comfort Systems USA, Inc. dated February 22, 2024 reporting the Company’s financial results for the fourth quarter and full year of 2023.

​ ​ ​

99.2 ​ Press Release of Comfort Systems USA, Inc. dated February 22, 2024 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, March 8, 2024.

​ ​ ​

104 ​ Cover Page Interactive Data File (the cover page XBRL tags are embedded within the Inline XBRL document).

​ ​ ​

​ ​ ​

3

SIGNATURES

​ Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. ​ ​

​

​

​ ​

COMFORT SYSTEMS USA, INC.

​ ​ ​

​ ​ ​

​ By: /s/ Laura F. Howell

​ ​ Laura F. Howell, Senior Vice President and General Counsel

​ Date:      February 22, 2024 ​

4

0001035983false00010359832023-10-262023-10-26 ​ ​

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549 ​

FORM 8-K

​

CURRENT REPORT

Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 ​ Date of Report (Date of earliest event reported) October 26, 2023 ​ Comfort Systems USA, Inc. (Exact name of registrant as specified in its charter) ​ ​

​

​

​

​

Delaware

1-13011

76-0526487

(State or other jurisdiction ​ (Commission ​ (IRS Employer

of incorporation) ​ File Number) ​ Identification No.)

​ ​

​

​

675 Bering Drive, Suite 400

​

Houston, Texas ​ 77057

(Address of principal executive offices) ​ (Zip Code)

​ Registrant’s telephone number, including area code (713) 830-9600 ​ (Former name or former address, if changed since last report.) ​ Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ​ ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) ​ Securities registered pursuant to Section 12(b) of the Act: ​

Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, $0.01 par value FIX New York Stock Exchange

​ Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). ​ Emerging growth company ☐ ​ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ ​ ​ ​

ITEM 2.02        Results of Operations and Financial Condition ​ Attached and incorporated herein by reference as Exhibit 99.1 is a copy of a press release of Comfort Systems USA, Inc. (the “Company”) dated October 26, 2023 reporting the Company’s financial results for the third quarter of 2023. ​ The information contained in this Item 2.02 of this Current Report on Form 8-K, including Exhibit 99.1 attached hereto, is being furnished and shall not be deemed “filed” for any purpose, and shall not be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, except as expressly set forth by specific reference in such filing. ​ ITEM 8.01           Other Events ​ Attached and incorporated herein by reference as Exhibit 99.2 is a copy of a press release of the Company dated October 26, 2023 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, November 16, 2023. ​ ITEM 9.01        Financial Statements and Exhibits ​ (d) The following Exhibits are included herein: ​ Exhibit 99.1 Press Release of Comfort Systems USA, Inc. dated October 26, 2023 reporting the Company’s financial results for the third quarter of 2023. ​ Exhibit 99.2 Press Release of Comfort Systems USA, Inc. dated October 26, 2023 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, November 16, 2023. ​

2

EXHIBIT INDEX

​ ​

​

​

Exhibit Number

Exhibit Title or Description

​ ​ ​

99.1 ​ Press Release of Comfort Systems USA, Inc. dated October 26, 2023 reporting the Company’s financial results for the third quarter of 2023.

​ ​ ​

99.2 ​ Press Release of Comfort Systems USA, Inc. dated October 26, 2023 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, November 16, 2023.

​ ​ ​

104 ​ Cover Page Interactive Data File (the cover page XBRL tags are embedded within the Inline XBRL document).

​ ​ ​

​ ​ ​

3

SIGNATURES

​ Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. ​ ​

​

​

​ ​

COMFORT SYSTEMS USA, INC.

​ ​ ​

​ ​ ​

​ By: /s/ Laura F. Howell

​ ​ Laura F. Howell, Senior Vice President and General Counsel

​ Date:      October 26, 2023 ​

4

0001035983false00010359832023-07-262023-07-26 ​ ​

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549 ​

FORM 8-K

​

CURRENT REPORT

Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 ​ Date of Report (Date of earliest event reported) July 26, 2023 ​ Comfort Systems USA, Inc. (Exact name of registrant as specified in its charter) ​ ​

​

​

​

​

Delaware

1-13011

76-0526487

(State or other jurisdiction ​ (Commission ​ (IRS Employer

of incorporation) ​ File Number) ​ Identification No.)

​ ​

​

​

675 Bering Drive, Suite 400

​

Houston, Texas ​ 77057

(Address of principal executive offices) ​ (Zip Code)

​ Registrant’s telephone number, including area code (713) 830-9600 ​ (Former name or former address, if changed since last report.) ​ Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ​ ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) ​ Securities registered pursuant to Section 12(b) of the Act: ​

Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, $0.01 par value FIX New York Stock Exchange

​ Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). ​ Emerging growth company ☐ ​ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ ​ ​ ​

ITEM 2.02        Results of Operations and Financial Condition ​ Attached and incorporated herein by reference as Exhibit 99.1 is a copy of a press release of Comfort Systems USA, Inc. (the “Company”) dated July 26, 2023 reporting the Company’s financial results for the second quarter of 2023. ​ The above information and attached press release are being furnished pursuant to Item 2.02 of Form 8-K and General Instruction B.2 thereunder. The information included herein and in the attached press release shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended. ​ ITEM 8.01           Other Events ​ Attached and incorporated herein by reference as Exhibit 99.2 is a copy of a press release of the Company dated July 26, 2023 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, August 17, 2023. ​ ITEM 9.01        Financial Statements and Exhibits ​ (d) The following Exhibits are included herein: ​ Exhibit 99.1 Press Release of Comfort Systems USA, Inc. dated July 26, 2023 reporting the Company’s financial results for the second quarter of 2023. ​ Exhibit 99.2 Press Release of Comfort Systems USA, Inc. dated July 26, 2023 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, August 17, 2023. ​

2

EXHIBIT INDEX

​ ​

​

​

Exhibit Number

Exhibit Title or Description

​ ​ ​

99.1 ​ Press Release of Comfort Systems USA, Inc. dated July 26, 2023 reporting the Company’s financial results for the second quarter of 2023.

​ ​ ​

99.2 ​ Press Release of Comfort Systems USA, Inc. dated July 26, 2023 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, August 17, 2023.

​ ​ ​

104 ​ Cover Page Interactive Data File (the cover page XBRL tags are embedded within the Inline XBRL document).

​ ​ ​

​ ​ ​

3

SIGNATURES

​ Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. ​ ​

​

​

​ ​

COMFORT SYSTEMS USA, INC.

​ ​ ​

​ ​ ​

​ By: /s/ Laura F. Howell

​ ​ Laura F. Howell, Senior Vice President and General Counsel

​ Date:      July 26, 2023 ​

4

0001035983false00010359832023-04-262023-04-26 ​ ​

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549 ​

FORM 8-K

​

CURRENT REPORT

Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 ​ Date of Report (Date of earliest event reported) April 26, 2023 ​ Comfort Systems USA, Inc. (Exact name of registrant as specified in its charter) ​ ​

​

​

​

​

Delaware

1-13011

76-0526487

(State or other jurisdiction ​ (Commission ​ (IRS Employer

of incorporation) ​ File Number) ​ Identification No.)

​ ​

​

​

675 Bering Drive, Suite 400

​

Houston, Texas ​ 77057

(Address of principal executive offices) ​ (Zip Code)

​ Registrant’s telephone number, including area code (713) 830-9600 ​ (Former name or former address, if changed since last report.) ​ Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ​ ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) ​ Securities registered pursuant to Section 12(b) of the Act: ​

Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, $0.01 par value FIX New York Stock Exchange

​ Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). ​ Emerging growth company ☐ ​ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ ​ ​ ​

ITEM 2.02        Results of Operations and Financial Condition ​ Attached and incorporated herein by reference as Exhibit 99.1 is a copy of a press release of Comfort Systems USA, Inc. (the “Company”) dated April 26, 2023 reporting the Company’s financial results for the first quarter of 2023. ​ The above information and attached press release are being furnished pursuant to Item 2.02 of Form 8-K and General Instruction B.2 thereunder. The information included herein and in the attached press release shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended. ​ ITEM 8.01           Other Events ​ Attached and incorporated herein by reference as Exhibit 99.2 is a copy of a press release of the Company dated April 26, 2023 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, May 18, 2023. ​ ITEM 9.01        Financial Statements and Exhibits ​ (d) The following Exhibits are included herein: ​ Exhibit 99.1 Press Release of Comfort Systems USA, Inc. dated April 26, 2023 reporting the Company’s financial results for the first quarter of 2023. ​ Exhibit 99.2 Press Release of Comfort Systems USA, Inc. dated April 26, 2023 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, May 18, 2023. ​

2

EXHIBIT INDEX

​ ​

​

​

Exhibit Number

Exhibit Title or Description

​ ​ ​

99.1 ​ Press Release of Comfort Systems USA, Inc. dated April 26, 2023 reporting the Company’s financial results for the first quarter of 2023.

​ ​ ​

99.2 ​ Press Release of Comfort Systems USA, Inc. dated April 26, 2023 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, May 18, 2023.

​ ​ ​

104 ​ Cover Page Interactive Data File (the cover page XBRL tags are embedded within the Inline XBRL document).

​ ​ ​

​ ​ ​

3

SIGNATURES

​ Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. ​ ​

​

​

​ ​

COMFORT SYSTEMS USA, INC.

​ ​ ​

​ ​ ​

​ By: /s/ Laura F. Howell

​ ​ Laura F. Howell, Senior Vice President and General Counsel

​ Date:      April 26, 2023 ​

4

0001035983false00010359832023-02-222023-02-22 ​ ​

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549 ​

FORM 8-K

​

CURRENT REPORT

Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 ​ Date of Report (Date of earliest event reported) February 22, 2023 ​ Comfort Systems USA, Inc. (Exact name of registrant as specified in its charter) ​ ​

​

​

​

​

Delaware

1-13011

76-0526487

(State or other jurisdiction ​ (Commission ​ (IRS Employer

of incorporation) ​ File Number) ​ Identification No.)

​ ​

​

​

675 Bering Drive, Suite 400

​

Houston, Texas ​ 77057

(Address of principal executive offices) ​ (Zip Code)

​ Registrant’s telephone number, including area code (713) 830-9600 ​ (Former name or former address, if changed since last report.) ​ Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ​ ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) ​ Securities registered pursuant to Section 12(b) of the Act: ​

Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, $0.01 par value FIX New York Stock Exchange

​ Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). ​ Emerging growth company ☐ ​ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ ​ ​ ​

ITEM 2.02        Results of Operations and Financial Condition ​ Attached and incorporated herein by reference as Exhibit 99.1 is a copy of a press release of Comfort Systems USA, Inc. (the “Company”) dated February 22, 2023 reporting the Company’s financial results for the fourth quarter and full year of 2022. ​ The above information and attached press release are being furnished pursuant to Item 2.02 of Form 8-K and General Instruction B.2 thereunder. The information included herein and in the attached press release shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended. ​ ITEM 8.01           Other Events ​ Attached and incorporated herein by reference as Exhibit 99.2 is a copy of a press release of the Company dated February 22, 2023 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, March 10, 2023. ​ ITEM 9.01        Financial Statements and Exhibits ​ (d) The following Exhibits are included herein: ​ Exhibit 99.1 Press Release of Comfort Systems USA, Inc. dated February 22, 2023 reporting the Company’s financial results for the fourth quarter and full year of 2022. ​ Exhibit 99.2 Press Release of Comfort Systems USA, Inc. dated February 22, 2023 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, March 10, 2023. ​

2

EXHIBIT INDEX

​ ​

​

​

Exhibit Number

Exhibit Title or Description

​ ​ ​

99.1 ​ Press Release of Comfort Systems USA, Inc. dated February 22, 2023 reporting the Company’s financial results for the fourth quarter and full year of 2022.

​ ​ ​

99.2 ​ Press Release of Comfort Systems USA, Inc. dated February 22, 2023 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, March 10, 2023.

​ ​ ​

104 ​ Cover Page Interactive Data File (the cover page XBRL tags are embedded within the Inline XBRL document).

​ ​ ​

​ ​ ​

3

SIGNATURES

​ Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. ​ ​

​

​

​ ​

COMFORT SYSTEMS USA, INC.

​ ​ ​

​ ​ ​

​ By: /s/ Laura F. Howell

​ ​ Laura F. Howell, Senior Vice President and General Counsel

​ Date:      February 22, 2023 ​

4

0001035983false00010359832022-10-262022-10-26 ​ ​

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549 ​

FORM 8-K

​

CURRENT REPORT

Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 ​ Date of Report (Date of earliest event reported) October 26, 2022 ​ Comfort Systems USA, Inc. (Exact name of registrant as specified in its charter) ​ ​

​

​

​

​

Delaware

1-13011

76-0526487

(State or other jurisdiction ​ (Commission ​ (IRS Employer

of incorporation) ​ File Number) ​ Identification No.)

​ ​

​

​

675 Bering Drive, Suite 400

​

Houston, Texas ​ 77057

(Address of principal executive offices) ​ (Zip Code)

​ Registrant’s telephone number, including area code (713) 830-9600 ​ (Former name or former address, if changed since last report.) ​ Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ​ ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) ​ Securities registered pursuant to Section 12(b) of the Act: ​

Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, $0.01 par value FIX New York Stock Exchange

​ Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). ​ Emerging growth company ☐ ​ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ ​ ​ ​

ITEM 2.02        Results of Operations and Financial Condition ​ Attached and incorporated herein by reference as Exhibit 99.1 is a copy of a press release of Comfort Systems USA, Inc. (the “Company”) dated October 26, 2022 reporting the Company’s financial results for the third quarter of 2022. ​ The above information and attached press release are being furnished pursuant to Item 2.02 of Form 8-K and General Instruction B.2 thereunder. The information included herein and in the attached press release shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended. ​ ITEM 8.01           Other Events ​ Attached and incorporated herein by reference as Exhibit 99.2 is a copy of a press release of the Company dated October 26, 2022 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, November 17, 2022. ​ ITEM 9.01        Financial Statements and Exhibits ​ (d) The following Exhibits are included herein: ​ Exhibit 99.1 Press Release of Comfort Systems USA, Inc. dated October 26, 2022 reporting the Company’s financial results for the third quarter of 2022. ​ Exhibit 99.2 Press Release of Comfort Systems USA, Inc. dated October 26, 2022 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, November 17, 2022. ​

2

EXHIBIT INDEX

​ ​

​

​

Exhibit Number

Exhibit Title or Description

​ ​ ​

99.1 ​ Press Release of Comfort Systems USA, Inc. dated October 26, 2022 reporting the Company’s financial results for the third quarter of 2022.

​ ​ ​

99.2 ​ Press Release of Comfort Systems USA, Inc. dated October 26, 2022 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, November 17, 2022.

​ ​ ​

104 ​ Cover Page Interactive Data File (the cover page XBRL tags are embedded within the Inline XBRL document).

​ ​ ​

​ ​ ​

3

SIGNATURES

​ Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. ​ ​

​

​

​ ​

COMFORT SYSTEMS USA, INC.

​ ​ ​

​ ​ ​

​ By: /s/ Laura F. Howell

​ ​ Laura F. Howell, Senior Vice President and General Counsel

​ Date:      October 26, 2022 ​

4

0001035983false00010359832022-07-272022-07-27 ​ ​

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549 ​

FORM 8-K

​

CURRENT REPORT

Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 ​ Date of Report (Date of earliest event reported) July 27, 2022 ​ Comfort Systems USA, Inc. (Exact name of registrant as specified in its charter) ​ ​

​

​

​

​

Delaware

1-13011

76-0526487

(State or other jurisdiction ​ (Commission ​ (IRS Employer

of incorporation) ​ File Number) ​ Identification No.)

​ ​

​

​

675 Bering Drive, Suite 400

​

Houston, Texas ​ 77057

(Address of principal executive offices) ​ (Zip Code)

​ Registrant’s telephone number, including area code (713) 830-9600 ​ (Former name or former address, if changed since last report.) ​ Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ​ ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) ​ Securities registered pursuant to Section 12(b) of the Act: ​

Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, $0.01 par value FIX New York Stock Exchange

​ Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). ​ Emerging growth company ☐ ​ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ ​ ​ ​

ITEM 2.02        Results of Operations and Financial Condition ​ Attached and incorporated herein by reference as Exhibit 99.1 is a copy of a press release of Comfort Systems USA, Inc. (the “Company”) dated July 27, 2022 reporting the Company’s financial results for the second quarter of 2022. ​ The above information and attached press release are being furnished pursuant to Item 2.02 of Form 8-K and General Instruction B.2 thereunder. The information included herein and in the attached press release shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended. ​ ITEM 8.01           Other Events ​ Attached and incorporated herein by reference as Exhibit 99.2 is a copy of a press release of the Company dated July 27, 2022 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, August 18, 2022. ​ ITEM 9.01        Financial Statements and Exhibits ​ (d) The following Exhibits are included herein: ​ Exhibit 99.1 Press Release of Comfort Systems USA, Inc. dated July 27, 2022 reporting the Company’s financial results for the second quarter of 2022. ​ Exhibit 99.2 Press Release of Comfort Systems USA, Inc. dated July 27, 2022 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, August 18, 2022. ​

2

EXHIBIT INDEX

​ ​

​

​

Exhibit Number

Exhibit Title or Description

​ ​ ​

99.1 ​ Press Release of Comfort Systems USA, Inc. dated July 27, 2022 reporting the Company’s financial results for the second quarter of 2022.

​ ​ ​

99.2 ​ Press Release of Comfort Systems USA, Inc. dated July 27, 2022 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, August 18, 2022.

​ ​ ​

104 ​ Cover Page Interactive Data File (the cover page XBRL tags are embedded within the Inline XBRL document).

​ ​ ​

​ ​ ​

3

SIGNATURES

​ Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. ​ ​

​

​

​ ​

COMFORT SYSTEMS USA, INC.

​ ​ ​

​ ​ ​

​ By: /s/ Laura F. Howell

​ ​ Laura F. Howell, Senior Vice President and General Counsel

​ Date:      July 27, 2022 ​

4

0001035983false00010359832022-04-272022-04-27 ​ ​

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549 ​

FORM 8-K

​

CURRENT REPORT

Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 ​ Date of Report (Date of earliest event reported) April 27, 2022 ​ Comfort Systems USA, Inc. (Exact name of registrant as specified in its charter) ​ ​

​

​

​

​

Delaware

1-13011

76-0526487

(State or other jurisdiction ​ (Commission ​ (IRS Employer

of incorporation) ​ File Number) ​ Identification No.)

​ ​

​

​

675 Bering Drive, Suite 400

​

Houston, Texas ​ 77057

(Address of principal executive offices) ​ (Zip Code)

​ Registrant’s telephone number, including area code (713) 830-9600 ​ (Former name or former address, if changed since last report.) ​ Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ​ ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) ​ Securities registered pursuant to Section 12(b) of the Act: ​

Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, $0.01 par value FIX New York Stock Exchange

​ Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). ​ Emerging growth company ☐ ​ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ ​ ​ ​

ITEM 2.02        Results of Operations and Financial Condition ​ Attached and incorporated herein by reference as Exhibit 99.1 is a copy of a press release of Comfort Systems USA, Inc. (the “Company”) dated April 27, 2022 reporting the Company’s financial results for the first quarter of 2022. ​ The above information and attached press release are being furnished pursuant to Item 2.02 of Form 8-K and General Instruction B.2 thereunder. The information included herein and in the attached press release shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended. ​ ITEM 8.01           Other Events ​ Attached and incorporated herein by reference as Exhibit 99.2 is a copy of a press release of the Company dated April 27, 2022 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, May 16, 2022. ​ ITEM 9.01        Financial Statements and Exhibits ​ (d) The following Exhibits are included herein: ​ Exhibit 99.1 Press Release of Comfort Systems USA, Inc. dated April 27, 2022 reporting the Company’s financial results for the first quarter of 2022. ​ Exhibit 99.2 Press Release of Comfort Systems USA, Inc. dated April 27, 2022 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, May 16, 2022. ​

2

EXHIBIT INDEX

​ ​

​

​

Exhibit Number

Exhibit Title or Description

​ ​ ​

99.1 ​ Press Release of Comfort Systems USA, Inc. dated April 27, 2022 reporting the Company’s financial results for the first quarter of 2022.

​ ​ ​

99.2 ​ Press Release of Comfort Systems USA, Inc. dated April 27, 2022 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, May 16, 2022.

​ ​ ​

104 ​ Cover Page Interactive Data File (the cover page XBRL tags are embedded within the Inline XBRL document).

​ ​ ​

​ ​ ​

3

SIGNATURES

​ Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. ​ ​

​

​

​ ​

COMFORT SYSTEMS USA, INC.

​ ​ ​

​ ​ ​

​ By: /s/ Laura F. Howell

​ ​ Laura F. Howell, Senior Vice President and General Counsel

​ Date:      April 27, 2022 ​

4

0001035983false00010359832022-02-232022-02-23 ​ ​

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549 ​

FORM 8-K

​

CURRENT REPORT

Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 ​ Date of Report (Date of earliest event reported) February 23, 2022 ​ Comfort Systems USA, Inc. (Exact name of registrant as specified in its charter) ​ ​

​

​

​

​

Delaware

1-13011

76-0526487

(State or other jurisdiction ​ (Commission ​ (IRS Employer

of incorporation) ​ File Number) ​ Identification No.)

​ ​

​

​

675 Bering Drive, Suite 400

​

Houston, Texas ​ 77057

(Address of principal executive offices) ​ (Zip Code)

​ Registrant’s telephone number, including area code (713) 830-9600 ​ (Former name or former address, if changed since last report.) ​ Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ​ ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) ​ Securities registered pursuant to Section 12(b) of the Act: ​

Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, $0.01 par value FIX New York Stock Exchange

​ Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). ​ Emerging growth company ☐ ​ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ ​ ​ ​

ITEM 2.02        Results of Operations and Financial Condition ​ Attached and incorporated herein by reference as Exhibit 99.1 is a copy of a press release of Comfort Systems USA, Inc. (the “Company”) dated February 23, 2022 reporting the Company’s financial results for the fourth quarter and full year of 2021. ​ The above information and attached press release are being furnished pursuant to Item 2.02 of Form 8-K and General Instruction B.2 thereunder. The information included herein and in the attached press release shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended. ​ ITEM 8.01           Other Events ​ Attached and incorporated herein by reference as Exhibit 99.2 is a copy of a press release of the Company dated February 23, 2022 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, March 11, 2022. ​ ITEM 9.01        Financial Statements and Exhibits ​ (d) The following Exhibits are included herein: ​ Exhibit 99.1 Press Release of Comfort Systems USA, Inc. dated February 23, 2022 reporting the Company’s financial results for the fourth quarter and full year of 2021. ​ Exhibit 99.2 Press Release of Comfort Systems USA, Inc. dated February 23, 2022 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, March 11, 2022. ​

2

EXHIBIT INDEX

​ ​

​

​

Exhibit Number

Exhibit Title or Description

​ ​ ​

99.1 ​ Press Release of Comfort Systems USA, Inc. dated February 23, 2022 reporting the Company’s financial results for the fourth quarter and full year of 2021.

​ ​ ​

99.2 ​ Press Release of Comfort Systems USA, Inc. dated February 23, 2022 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, March 11, 2022.

​ ​ ​

104 ​ Cover Page Interactive Data File (the cover page XBRL tags are embedded within the Inline XBRL document).

​ ​ ​

​ ​ ​

3

SIGNATURES

​ Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. ​ ​

​

​

​ ​

COMFORT SYSTEMS USA, INC.

​ ​ ​

​ ​ ​

​ By: /s/ Laura F. Howell

​ ​ Laura F. Howell, Vice President and General Counsel

​ Date:      February 23, 2022 ​

4

0001035983false00010359832021-10-272021-10-27 ​ ​

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549 ​

FORM 8-K

​

CURRENT REPORT

Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 ​ Date of Report (Date of earliest event reported) October 27, 2021 ​ Comfort Systems USA, Inc. (Exact name of registrant as specified in its charter) ​ ​

​

​

​

​

Delaware

1-13011

76-0526487

(State or other jurisdiction ​ (Commission ​ (IRS Employer

of incorporation) ​ File Number) ​ Identification No.)

​ ​

​

​

675 Bering Drive, Suite 400

​

Houston, Texas ​ 77057

(Address of principal executive offices) ​ (Zip Code)

​ Registrant’s telephone number, including area code (713) 830-9600 ​ (Former name or former address, if changed since last report.) ​ Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ​ ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) ​ Securities registered pursuant to Section 12(b) of the Act: ​

Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, $0.01 par value FIX New York Stock Exchange

​ Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). ​ Emerging growth company ☐ ​ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ ​ ​ ​

ITEM 2.02        Results of Operations and Financial Condition ​ Attached and incorporated herein by reference as Exhibit 99.1 is a copy of a press release of Comfort Systems USA, Inc. (the “Company”) dated October 27, 2021 reporting the Company’s financial results for the third quarter of 2021. ​ The above information and attached press release are being furnished pursuant to Item 2.02 of Form 8-K and General Instruction B.2 thereunder. The information included herein and in the attached press release shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended. ​ ITEM 8.01           Other Events ​ Attached and incorporated herein by reference as Exhibit 99.2 is a copy of a press release of the Company dated October 27, 2021 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, November 12, 2021. ​ ITEM 9.01        Financial Statements and Exhibits ​ (d) The following Exhibits are included herein: ​ Exhibit 99.1 Press Release of Comfort Systems USA, Inc. dated October 27, 2021 reporting the Company’s financial results for the third quarter of 2021. ​ Exhibit 99.2 Press Release of Comfort Systems USA, Inc. dated October 27, 2021 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, November 12, 2021. ​

2

EXHIBIT INDEX

​ ​

​

​

Exhibit Number

Exhibit Title or Description

​ ​ ​

99.1 ​ Press Release of Comfort Systems USA, Inc. dated October 27, 2021 reporting the Company’s financial results for the third quarter of 2021.

​ ​ ​

99.2 ​ Press Release of Comfort Systems USA, Inc. dated October 27, 2021 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, November 12, 2021.

​ ​ ​

104 ​ Cover Page Interactive Data File (the cover page XBRL tags are embedded within the Inline XBRL document).

​ ​ ​

​ ​ ​

3

SIGNATURES

​ Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. ​ ​

​

​

​ ​

COMFORT SYSTEMS USA, INC.

​ ​ ​

​ ​ ​

​ By: /s/ Laura F. Howell

​ ​ Laura F. Howell, Vice President and General Counsel

​ Date:      October 27, 2021 ​

4

0001035983false00010359832021-07-282021-07-28 ​ ​

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549 ​

FORM 8-K

​

CURRENT REPORT

Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 ​ Date of Report (Date of earliest event reported) July 28, 2021 ​ Comfort Systems USA, Inc. (Exact name of registrant as specified in its charter) ​ ​

​

​

​

​

Delaware

1-13011

76-0526487

(State or other jurisdiction ​ (Commission ​ (IRS Employer

of incorporation) ​ File Number) ​ Identification No.)

​ ​

​

​

675 Bering Drive, Suite 400

​

Houston, Texas ​ 77057

(Address of principal executive offices) ​ (Zip Code)

​ Registrant’s telephone number, including area code (713) 830-9600 ​ (Former name or former address, if changed since last report.) ​ Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ​ ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) ​ Securities registered pursuant to Section 12(b) of the Act: ​

Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, $0.01 par value FIX New York Stock Exchange

​ Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). ​ Emerging growth company ☐ ​ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ ​ ​ ​

ITEM 2.02        Results of Operations and Financial Condition ​ Attached and incorporated herein by reference as Exhibit 99.1 is a copy of a press release of Comfort Systems USA, Inc. (the “Company”) dated July 28, 2021 reporting the Company’s financial results for the second quarter of 2021. ​ The above information and attached press release are being furnished pursuant to Item 2.02 of Form 8-K and General Instruction B.2 thereunder. The information included herein and in the attached press release shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended. ​ ITEM 8.01           Other Events ​ Attached and incorporated herein by reference as Exhibit 99.2 is a copy of a press release of the Company dated July 28, 2021 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, August 13, 2021. ​ ITEM 9.01        Financial Statements and Exhibits ​ (d) The following Exhibits are included herein: ​ Exhibit 99.1 Press Release of Comfort Systems USA, Inc. dated July 28, 2021 reporting the Company’s financial results for the second quarter of 2021. ​ Exhibit 99.2 Press Release of Comfort Systems USA, Inc. dated July 28, 2021 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, August 13, 2021. ​

2

EXHIBIT INDEX

​ ​

​

​

Exhibit Number

Exhibit Title or Description

​ ​ ​

99.1 ​ Press Release of Comfort Systems USA, Inc. dated July 28, 2021 reporting the Company’s financial results for the second quarter of 2021.

​ ​ ​

99.2 ​ Press Release of Comfort Systems USA, Inc. dated July 28, 2021 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, August 13, 2021.

​ ​ ​

104 ​ Cover Page Interactive Data File (the cover page XBRL tags are embedded within the Inline XBRL document).

​ ​ ​

​ ​ ​

3

SIGNATURES

​ Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. ​ ​

​

​

​ ​

COMFORT SYSTEMS USA, INC.

​ ​ ​

​ ​ ​

​ By: /s/ Laura F. Howell

​ ​ Laura F. Howell, Vice President and General Counsel

​ Date:      July 28, 2021 ​

4

0001035983false00010359832021-04-282021-04-28 ​ ​

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549 ​

FORM 8-K

​

CURRENT REPORT

Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 ​ Date of Report (Date of earliest event reported) April 28, 2021 ​ Comfort Systems USA, Inc. (Exact name of registrant as specified in its charter) ​ ​

​

​

​

​

Delaware

1-13011

76-0526487

(State or other jurisdiction ​ (Commission ​ (IRS Employer

of incorporation) ​ File Number) ​ Identification No.)

​ ​

​

​

675 Bering Drive, Suite 400

​

Houston, Texas ​ 77057

(Address of principal executive offices) ​ (Zip Code)

​ Registrant’s telephone number, including area code (713) 830-9600 ​ (Former name or former address, if changed since last report.) ​ Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ​ ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) ​ Securities registered pursuant to Section 12(b) of the Act: ​

Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, $0.01 par value FIX New York Stock Exchange

​ Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). ​ Emerging growth company ☐ ​ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ ​ ​ ​

ITEM 2.02        Results of Operations and Financial Condition ​ Attached and incorporated herein by reference as Exhibit 99.1 is a copy of a press release of Comfort Systems USA, Inc. (the “Company”) dated April 28, 2021 reporting the Company’s financial results for the first quarter of 2021. ​ The above information and attached press release are being furnished pursuant to Item 2.02 of Form 8-K and General Instruction B.2 thereunder. The information included herein and in the attached press release shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended. ​ ITEM 8.01           Other Events ​ Attached and incorporated herein by reference as Exhibit 99.2 is a copy of a press release of the Company dated April 28, 2021 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, May 14, 2021. ​ ITEM 9.01        Financial Statements and Exhibits ​ (d) The following Exhibits are included herein: ​ Exhibit 99.1 Press Release of Comfort Systems USA, Inc. dated April 28, 2021 reporting the Company’s financial results for the first quarter of 2021. ​ Exhibit 99.2 Press Release of Comfort Systems USA, Inc. dated April 28, 2021 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, May 14, 2021. ​

2

EXHIBIT INDEX

​ ​

​

​

Exhibit Number

Exhibit Title or Description

​ ​ ​

99.1 ​ Press Release of Comfort Systems USA, Inc. dated April 28, 2021 reporting the Company’s financial results for the first quarter of 2021.

​ ​ ​

99.2 ​ Press Release of Comfort Systems USA, Inc. dated April 28, 2021 reporting the Company’s declaration of a quarterly dividend on the Company’s common stock to stockholders of record as of the close of business on the record date, May 14, 2021.

​ ​ ​

104 ​ Cover Page Interactive Data File (the cover page XBRL tags are embedded within the Inline XBRL document).

​ ​ ​

​ ​ ​

3

SIGNATURES

​ Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. ​ ​

​

​

​ ​

COMFORT SYSTEMS USA, INC.

​ ​ ​

​ ​ ​

​ By: /s/ Laura F. Howell

​ ​ Laura F. Howell, Vice President and General Counsel

​ Date:      April 28, 2021 ​

4