Addison Company is a provider of heating and cooling products. Founded in 1949, Addison manufactures commercial air conditioning products, residential water-source heat pumps and custom products and systems. Its products include split system condensing units, indoor air-cooled condensing units, air handlers, outside air equipment, water heaters and chillers. It is an ISO:9001-certified company and participates in various trade shows. Its products are distributed through retailers, wholesale distributors, catalog supply houses, private labels and original equipment manufacturers.