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Nortek : Headquartered in Providence, Rhode Island, Nortek, Inc., a subsidiary of Nortek Holdings, Inc., was established in 1967. With subsidiary companies
Colt Group Limited : provider of climate control systems, products and services.
Infiltec Air Leakage Control: assisting contractors and homeowners in solving radon mitigation and building air leakage measurement and control problems.
ITT Industries : supplier of HVAC equipment including pumps, valves, controls for hydronic heating, chilled water, and steam systems.
Des Champs Laboratories Incorporated: developing innovative solutions for energy recovery, outside air conditioning, improved indoor air quality, and air to air heat exchangers.
Bard Manufacturing Company : manufacturer of air conditioners, furnaces and heat pumps designed for the residential, commercial, school and telecommunication markets.
Invensys Climate Controls Europe : serves the commercial refrigeration, residential, and light commercial HVAC markets.
Armstrong Pumps: manufactures circulators, hydronics, pumps, heat exchangers, and expansion equipment.
Watlow: designs and manufactures industrial heaters, sensors and controls. Provides thermal system integration, custom capabilities, and engineering support.
Edwards Engineering Corp.: manufactures valance heating and cooling systems, stainless steel baseboards, and chillers.
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