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Twin Hornet 22 - Engine Preheater - 120V

$329.00/Each
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Part# 08-12217
MFR Model# T7A4J1-200

Overview

Choose this heater to pre-heat the engine compartment of general aviation aircraft. This heater will automatically maintain optimum temperatures for your aircraft engine.
  • Thermostatically controlled (75° F)
  • 2 fans & 2 heating modules
  • 75ºF hermetically sealed explosion proof thermostat
  • 2" x 2.5" x 9.25" housing
  • 120V AC
  • 0-250 Watts (Next generation self-regulating modules)
  • 40' Premium, extreme temperature cord, rated at -40°C
  • Carrying bag included
   
California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

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Reviews

The part that arrived, is fine. However the second part is still backordered.

Transportation L Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

January 1, 2025

Worked better than I ever expected. Temps dipping into 5-15F, CHT temps averaged 60F, oil 50F after 24hours of use. That was in a hangar without using a thermal blanket. I like that it doesn’t cook the engine, keeps it just warm enough similar to a spring fall night.

Robert C Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

December 25, 2024

The Hornet does what is required, simple and effective. AMT proven works as advertised.

Jeffrey C Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

December 18, 2024

Simply put, the Twin Hornet is everything the manufacturer said it was. I am completely satisfied with its build quality and performance. Highly recommended.

Thomas W Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

December 13, 2024

I have only used it for a few weeks, but it works as described and I am happy with the results.

Eric P Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

December 6, 2024

Great heater. Heavy-duty cord big plus. Works exactly as advertised. Love the safety features and thats its made in the USA. Strongly recommend.

Randall B
December 5, 2024

It hasnt been cool enough to test this for real, but it arrived on time, in good shape, and past the refrigerator test.

Dan M Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

September 24, 2024

Allen Y Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

February 20, 2024

Using in 0- 15° temp, uninsulated hanger, warmed engine to over 50° in @ 3-4 hours (based on my highly calibrated HF laser thermometer!!! testing in different locations on the engine) with moving blanket over cowling, small size allows it to fit underneath tight cowling (Flight Design CTSW), long power cord extremely helpful, the thermostat on the unit works surprisingly well to regulate the temperature, have left the unit plugged-in and operating, would check on the unit every hour or so periodically, to find the unit cycling on and off depending on temperature demand…. Just wish I would’ve got a free hat!!!

David Y Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

February 8, 2024

Great product and works as advertised. Engine temp 77 deg just after start up on 20 deg morning.

Jeff S Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

January 27, 2024

Q&A

Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: I have a Baron 58. Does it come with one or two heaters for each motor?

This is sold as each engine. If you have a twin you will need to buy (2).

Q: How long do you plug this in and operate before needing the plane? I am hoping an hour does the job

Because the heater is thermostatically controlled, it should be plugged in at all times when the ambient temperature is below 60 degrees. To answer your question, it can take up to 48 hours to heat a cold soaked engine.