Established in 1935, Dennis Supply Company offers a variety of comfort systems. The company provides heaters, fireplaces, furnaces, heat pumps, blowers, ventilators, air conditioners, refrigerants and split systems. It offers a range of accessories, including belts, bearings, sheaves, condenser pads, electrical whips, registers, liners, fan blades and ball valves. The company provides products from manufacturers, including Copeland, Gibson, Honeywell, LG, Aprilaire, Mueller, Frigiadaire, Johnson, Russell, Maytag, Summit and White Rogers. It also provides motors of various brands, such as Fasco, General Electric, Emerson and Marathon. Its chemicals include refrigerant oils, coil cleaners, leak detectors and ice machine cleaners. Dennis Supply Company operates various locations in Sioux Falls and Rapid City, S.D.; Casper, Wyo.; Waterloo, Des Moines, Ames, Urbandale, Council Bluffs and Sioux City, Iowa; and Grand Island, Omaha, Lincoln and Scottsbluff, Neb. It is a member of the Air Conditioning and Refrigeration Wholesalers Association.

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