AAON vs TTEK Comparison

AAON Inc is a manufacturer of air-conditioning and heating equipment. The products include rooftop units, chillers, packaged outdoor mechanical rooms, air-handling units, makeup air units, energy-recovery units, condensing units, geothermal heat pumps, and self-contained units and coils. The company operates through three segments: AAON Oklahoma, AAON Coil Products, and BASX. It generates the majority of its revenue from the AAON Oklahoma segment which derives maximum revenue, engineers, manufactures, and sells, semi-custom, and custom HVAC systems, designs and manufactures control solutions, and sells retail parts to customers through retail part stores and online.

Tetra Tech Inc provides consulting and engineering services for environmental, infrastructure, resource management, energy, and international development markets. It specializes in providing water-related services for public and private clients. It designs infrastructure, facilities, and other structures with complex plans and resource management. it has two reportable segments. Its Government Services Group (GSG) segment includes activities with U.S. government clients (federal, state and local) and activities with development agencies world-wide. Commercial/International Services Group (CIG) segment, which derives maximum revenue, includes activities with U.S. commercial clients and international clients other than development agencies.