TTMI vs LII Comparison

TTM Technologies Inc manufactures technology products, including mission systems, RF components, RF/microwave assemblies, and advanced interconnect products such as PCBs and substrates. It operates through three segments: A&D, Commercial, and RF&S Components. The A&D segment supports aerospace and defense missions with PCBs, assemblies, microelectronics, and integrated systems. The Commercial segment, generating the majority of revenue, serves automotive, medical, industrial, and data center markets. The RF&S Components segment provides TTM-designed RF components and COTS products. The Company's revenues come from PCBs, engineered systems, and long-term contracts for intelligence, surveillance, and communications solutions.

Lennox International manufacturers and distributes heating, ventilating, air conditioning, and refrigeration products for the North American replacement (75% of sales) and new construction (25% of sales) markets. Residential HVAC (home comfort solutions) accounts for 67% of sales and commercial HVAC (building climate solutions) accounts for the remaining 33% of sales. Lennox's commercial exposure is what its peers refer to as residential and light commercial, and lacks the scale and complexity of what is referred to as an applied solution. The company goes to market with multiple brands, but Lennox is its flagship HVAC brand.