Aircraft Engine Heater Systems

Why should I use an AeroTherm Heater?

The AeroTherm is a whole engine heater, meaning it evenly heats all engine components to the same temperature. Because airplanes utilize cast-iron engine cylinders, it is important to heat the cast-iron to the same temperature as the aluminum pistons. Uneven heating of the pistons results in piston scoring. This occurs when the pistons are hotter than the engine cylinder. This problem is typical of oil heaters which also cause condensation due to uneven heating.

The AeroTherm eliminates condensation and piston scoring thru its unique, heat-circulation technology.

Take-off demands 90-100% of an engine’s horsepower, and for this reason, it’s vitally important to properly warm the engine. Proper pre-heating reduces wear and tear and substantially extends the life of an engine. Idling is not an effective way to warm an engine. When idling, the propeller forces cold air back across and through the engine compartment keeping a cold engine from heating properly.

In short, The AeroTherm is your best option for pre-heating a cold-soaked aircraft engine prior to flight.

What are the heating times on a cold-soaked engine?

32◦F and Above: 90 minutes

32◦F and Below: 3 hours

Heating times are based on AeroTherm use in a closed hangar.

How does the AeroTherm heater attach to my airplane?

Every AeroTherm heater ships with a durable nylon suspension band that attaches to the prop of your aircraft.

Can the heater be used on any plane?

The heater can be used on virtually any small aircraft, as long as the cowl vents will accommodate a 4inch diameter semi-collaspable hose. To maximize warming, the cowling/engine compartment should be sealed with the provided sponges. SEALING IS IMPORTANT! You can cook a pie with the oven door open, but it will take a lot longer. We also suggest using a blanket or something as simple as a sleeping bag to help retain the heat. This simple step increases efficiency tenfold.

Can the AeroTherm heater be run on a timer?

The AeroTherm Heater has a built-in thermostat which will cycle on and off as needed.  Some pilots do use a timer when they have consistant flight schedules this allows them to turn on and run the heater on a as needed basis. 

How big is the Deuce?

 6.5" H x 6.5" W x 12.75" L

Can the heater be left on high?

Yes, the heater has a built in Thermostat

Will the AeroTherm heater be effective if my plane is parked outside in the wind at extremely cold temperatures?

Yes, if you cover the engine compartment with an insulated blanket and make sure your bottom cowl holes are plugged. (Always remember to remove cowl plugs before flying)

how much electricty will the Deuce utilize?

6.9 Cents per kilowatt hour (SD Utility Rate- Individual rates vary by Utility)

Deuce Draws 1355 watts.

1355 watts x .0069 = 9.35 cents/hr

Our most recent testing took place on a Cirrus without a blanket inside an unheated hanger at 20 degrees Fahrenheit.  The Deuce was plugged into an hourly electric meter and set for 70 degrees.  It ran for 6 hours over a 21 hour period essential 1/3 of the time the unit was running. 

9.35 cents x 6 hours = 56.10 cents an hour

56.10 cents / 21 hours = 2.67 an hour or 2.67 x 24 = 64 cents a day. 
Results may vary based on temperature, hangar, airplane fabrication and utility rates.

My heater fan has stopped or is making a squawking noise

Given the design of the heater and depending on how it is used and in what conditions it is subjected to, some of the units will need to be lubricated.  These maintenance instructions can be found in PDF format under the How To Use section of this website.