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Dovair Aviation
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. Will Day from Alaska Airmen's Association presented information on the new Fund Raiser "Raffle" plane that will be built with Cub Crafters.
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About us
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Tanis Aircraft Products is a company of "firsts". Since starting our business in 1974, we were the first to develop engine-mounted 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.
Testimonials
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I was fortunate to have a strong tailwind that assisted me in reaching the airport with a non-event landing. My mechanic said the engine failure problem was caused by lack of lubricating oil due to improper preheating. This engine had just 380 hours since overhaul. During engine rebuild my mechanic insisted that I install a preheating system and recommended the Tanis brand.
Why Tanis
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Having a Tanis multi-point preheat system will thoroughly heat-soak your engine. This will keep the metal above dew point removing the chance of condensation on your engine. Condensation forms when warm oil/water vapor rises from your oil pan and hits a colder surface (like your cylinder heads!). This is the main reason why you want your cylinders and case warmer than your oil pan.
Faq
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FAQ or frequently-asked-questions page gives answers to common questions that we are asked and gives other useful information. YES! Current Tanis systems use elements that are compatible with all engine analyzers/monitors. Our standard and STC systems do not use the CHT (Cylinder Head Temperature) thermocouple well.
Piston Preheat
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Tanis Aircraft Products has wide range of piston engine preheat products. We have kits for engines from manufacturers like Austro, Continental, Franklin, Jabiru, Jacobs, Lycoming, Rotax, and more. All of us at Tanis truly care about your aircraft's longevity, your safety, and your ability to get to your destination despite the cold weather.
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