Tanis Aircraft Products is the leading manufacturer of Aircraft Engine Preheat systems. Tanis Aircraft started business in 1974, we were the first to develop aircraft engine preheat systems for piston engines, first to offer helicopter preheat, first to offer turbine preheat, and the first to meet the rigorous requirements for FAA Supplemental Type Certification. Our website has information on Piston aircraft preheat systems, Turbine engine preheaters, Rotorwing preheaters, and Replacement parts & accessories. We manufacture all of our own systems at our facility at the Glenwood Municipal Airport (KGHW) in West Central Minnesota
