Hartzell Propeller has acquired Reiff Preheat Systems, expanding its engine preheat options for general aviation aircraft owners.
The recent acquisition follows on the July 2021 acquisition of Tanis Aircraft Products.
Hartzell officials note that the Tanis brand uses heated bolts and silicone pads to provide engine preheat, while Reiff Preheat Systems uses heated coils and aluminum pads to heat engine cylinders and oil sumps.


Both product lines are available for a wide variety of Lycoming, Continental, and Rotax engines, while Tanis preheat systems are also available for helicopter and turboprop applications, company officials added.
According to Hartzell officials, the benefits of aircraft preheat include:
- Reduced engine wear during cold starts, resulting in increased engine life
- Reduced chance of frosting spark plugs, making engine starts easier
- Reduced run-up time during cold weather operations, saving fuel
- Reduced cylinder scoring
- Promotion of proper oil flow
- Increased safety
- Compliance with engine manufacturer manuals that mandate preheating.
For more information: HartzellProp.com
There are two primary manufacturers of full preheat systems. Others use single points of contact, like on the oil pan. Hartzell now owns both of the major manufacturers.
I’m glad I bought my Reiff before.