Founded in 1973, Tanis Aircraft Services specializes in a range of cold weather products for aircraft. The company is one of the leading suppliers of aircraft engine preheaters throughout the world. It manufactures a variety of cabin and battery preheaters, as well as several forms of aircraft covers and other related accessories. Tanis Aircraft Services products are certified by the Federal Aviation Administration. The company offers aircraft instrument, battery and cabin heaters. It also provides insulated engine blankets and wing covers. Tanis Aircraft Services cabin heaters are used in medical helicopters to keep medical supplies from freezing. The company s piston engine preheaters heat the engine with a combination of components that are placed to give a thorough preheat to the entire engine. Its products help to preheat reciprocating and turbine engines, gearboxes, transmissions and fuel flow parts in helicopters.