Robertson Heating Supply, founded in 1934 and based in Alliance, Ohio, is a company that is a distributor of heating and plumbing supplies. The company offers a range of heating, ventilation and air conditioning products, such as heat pumps and air conditioners, insulation products, fireplaces and unit heaters; and humidifiers, such as controls and air cleaners. It also offers residential and commercial cast iron and copper tube boilers and indirect fired water heaters. The company additionally offers plumbing products, such as bathroom fixtures, faucets, pumps and sewage systems, and fiberglass and acrylic bath products. It also offers disposers, residential and commercial water heaters, polyethylene piping systems, tubing and fittings, and stainless steel sinks and water coolers.