From $289.00 to $329.00
Image Description PN Price Buy
Twin Hornet - 22
Engine pre-heater / 2 Fan; thermostatically controlled ;
60F on 70F off ;
40 foot cord rated at -40C ;
2" x 2.5" x 9.25"; 120v AC 250 watts
Hornet 45
Engine or Cockpit Preheater
1 - Fan; 70 F; 3.625" x 5" x 5.25";
120v AC; 700 - 800 watts, ambient temperature dependent
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Aircraft Heaters represent the most safe and reliable aircraft engine preheater and cabin heaters ever developed. These heaters are designed to safely heat your engine in environments that are considered to be dangerous locations. The Hornet Heater line uses the most advanced, self-temperature regulating, semi-conducting material developed. The Hornet Heaters are equipped with two or four of every single operational component:

  • Self regulating variable wattage heating elements
  • DC fans - waterproof, ball bearing, 50,000 hour + (these quality fans cost 80% more than basic heater models)
  • Twin DC power supply - solid state & waterproof (no cheap bridge rectifiers here)
  • Twin thermostats & heating elements
Because the Hornet Heaters are hand built, the user can select the thermostat temperatures. The two-stage operation also reduces amp inrush by sequencing the heaters. Perhaps the most important feature of the Twin heating system is the peace of mind that comes from knowing that the possibility of both heaters failing simultaneously is almost nonexistent and one heating circuit will provide enough heat to prevent engine damage. The unit is equipped with a switch that provides the user with a means to test the operation of each heating circuit independently. Other important features include a non-conductive fire rated fiberglass housing, mil-spec wiring, and an industry leading 3-year warranty.

These Heaters are made in the United States.

Designed as if your life depended on it - because the life of your engine may.


  • The heaters are intrinsically safe.
  • Certified Hornet heaters have passed all safety and certification requirements and meet IPX7, ISO 8846, SAE J1171 and the USCG ignition protection standard.


Used it this past winter. Did an excellent job keeping my plane ready to go. No issues leaving it plugged in while the plane was not in use. Two notes. It is not a rapid heater but one designed to be left in. It will turn off and on once it reaches temperature. I highly recommend it.

Jesse W
May 18, 2020

works exactly as their literature states.

Brian P
May 11, 2020

Have used for couple weeks, so far works awesome

Don G
January 10, 2020

The Twin Hornet 22 is superbly engineered and manufactured. Its amazing to see how this design fits so neatly through the intake vent and sits atop the cylinder. I had a couple questions that I emailed after hours to the factory and got a response immediately. So there is outstanding customer support to go along with a first class product.

Jeffrey S
December 13, 2019


Ross P
December 13, 2019

The Hornet seems to work as it should. I have no complaints!

October 24, 2019

These heater work exactly as advertised. A simple thermometer left in the engine cowl will tell you what the temperature is. It may take from 8-12 hours to heat a cold soaked engine but once heated it will cycle on/off as needed. The customers who left the low rating obviously did not read the POH supplied with the heater

Bryan K
April 20, 2018

Im normally pretty reluctant to give out five star reviews. It means the product has to be pretty well perfect or its just not worth 5 stars. I purchased the Twin Hornet - 22 with standard electrical plug in to pre-heat my engine in conjunction with an oil pan heater and properly fitted, high quality engine tent. I was skeptical of the device at first, I tried it out at home it put out a pleasant feeling of heat but nothing special. When I tried it in the plane for the first time it was minus 40 Deg C. I gave it 10 minutes to warm up to see how how it would blow and it was barely lukewarm. I figured there would be no way it would be warm enough to start the next day. I came back after 8 hours and I utterly wrong. As soon as I stuck my hand inside the engine compartment it felt almost room temperature. The engine parts all felt slightly cool to the touch but nothing I would be concerned of. I used my temperature gun and the coldest part I measured was 10 Deg C. The engine turned over happily and oil pressure shot up immediately (oil pressure more than likely due to the sump heater). Its of a very high build quality. I feel I could smack it around over the years and it wouldnt crack as its not made of regular plastic and you can feel that. The cord is heavy weight and actually remains flexible at cold temperatures. I wish I could say the same for my sump heater cord. I do actually believe this device is going to last as long as the airplane will, and its comforting to know that it has two of everything and is intrinsically safe. I can leave it plugged in and not worry about it burning my investment to the ground. Ive had sump heaters that spontaneously ignite on the second use. Id still use it in conjunction with a sump heater to get the oil warm and heat the lower part of the engine. However I highly recommended this product. If it can get my engine from minus 40 Deg C up to 10 Deg C, it works.

Christopher T
February 3, 2018

Use your head when deciding how many watts you are going to use, and what type of insulating cowl cover you are going to combine with the heater and you will not be disappointed. If you are going to use this outside, you will need a top quality custom cowl cover made for the job. I donât see how the heater itself could be any higher quality. It is EXACTLY as advertised on the website!

Dan K
November 6, 2017

Works as advertised and would highly recommend it. I have a Mooney 231 I just throw a blanket over the cowling, close the cowl flaps and plug the air-intakes and turn it on. Start up is no issue and temperatures are up and good to go.

Bob E
June 15, 2017


Q: What is the amp draw on the alternator for the small Hornet heater - 1 fan? Part number 08-12129

Per the supplier: at 12v, it is 16 amps in rush, 10 while running. At 24v, it is 12 amps in rush and 5 while running.

Q: What is the BTU output for Hornet Aircraft Heater part number 08-12130 (Hornet<sup>2</sup> - 2 Fan)?

Per the supplier: The BTU output for the Hornet2 - 2 Fan is about 350 BTUs.

Q: Part number 08-12210: What is the amp draw on the alternator for the small Hornet heater - 1 fan? What is the temperature out?

The amp draw would be about 8 amps. The temperature out would be 50 delta T. Which means whatever the temperature would be in the cabin it will blow out 50 degrees hotter.

Q: What is the amp draw on the T6A2H4-200 hornet aircraft heater? What size circuit breaker should I use?

The typical amp draw is 8 to 10 amps. Supplier recommends installing a 20 amp breaker and sizing the wire for 20 amps.

Q: Manufacturers webpage P/N: 08-12221 HEATER shows 220V available. Do you know if this unit work with 110V and 220V at the same time, or have to be ordered as a 220V version?

P/N# 08-12221 is a dual voltage meter. It may be used on either 120V or 220V.

Q: Do these actually come with two heating units?

No, the photo is for reference to show two sides of the unit. These are priced and sold each.

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