The BellSimons Companies was founded in 1940 as The Bell Pump Company, operating out of Hartford, Connecticut, rebuilding oil pumps for the heating trade. By the late 1940s, locations in New Haven, Connecticut and Springfield, Massachusetts, opened to better serve the professionals in the residential and commercial fields.

Bryant Heating & Cooling Systems is a company that offers products for heating and cooling, controls and thermostats, indoor air quality, refrigerants, etc. The ducts range from air conditioners to oil furnaces and outdoor as well as indoor units.

Carrier Corp. is a global residential product innovations and solutions firm. Their inventory includes advanced communicating controls and thermostats, high-efficiency split system air conditioners and heat pumps, ductless split systems, gas and oil furnaces, boilers, fan and evaporator coils, geothermal systems, zoning systems, a complete line of indoor air quality products and small packaged products.

GI Industries Inc. provides commercial tube cleaning machines for boilers, chillers, etc.; duct cleaning equipment, high pressure washers and industrial vacuums, and tube plugs, flexible shafts.

Goodway Technologies Corp is a manufacturer of Boiler/chiller/condenser tube cleaners, duct cleaners, vacuums, drain cleaners, hi-pressure washers, vapor-steam cleaners, surface sanitation, testing instruments, cooling tower cleaners, coil cleaners and mold remediation equipment.

SpeedClean manufactures and markets HVAC maintenance tools like portable coil cleaning systems, biodegradable coil cleaners, tube cleaners, mini-split cleaning systems and much more.

United Technologies Corporation provides technology products and services to building systems and aerospace industries worldwide. The company's UTC Climate, Controls & Security segment offers electronic security products, including intruder alarms, access control systems, and video surveillance systems; and fire safety products, as well as systems integration, video surveillance, installation, maintenance, and inspection services.