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G.H. Herrmann Refrigeration / AC / Heating Inc. is a reliable company that has been serving Columbia and the surrounding counties with 43 years of expertise in heating, cooling, and refrigeration. We provide professional services to residential, institutional, and commercial facilities in Columbia County, Rensselaer, Greene, and Dutchess. Our services include installation, sales, repairs, and designs for all major makes and models of equipment. We are a factory authorized York Dealer and offer emergency service upon request.