Profile: Jenkins & McMahon Supply, Inc. is a wholesaler of plumbing, heating and air conditioning products. We are specialized in providing in service, repair and replacement parts. Our products include galvanized and flexible duct in various sizes and configurations. We also stock Burnham and Kerr furnaces for both new and replacement situations. We stock heating and cooling parts from the manufacturers such as Bell & Gosset, Honeywell, Hoffman and Alco Controls.