Works perfect. I bought two of them to use in my Aztec. I didn’t like the idea of having to remember to turn on preheat X number of hours prior to departure time. Also with many forms of preheat you are advised to not leave on all the time. With the hornets there is no problem with leaving them on 24/7. The thermostat turns them off when it hits 70. I put a blanket over each cowl and plugged them up. Came back the next day with an OAT of 32. Oil temps were 62/63 and all CHT’s were 65-75. 1/4 the cost of a Tannis or Reiff system. Also you can loan to a friend and/or use on a different aircraft. It might struggle to keep up on a windy ramp without really good insulation but in a hangar it does extremely well.

Brent R Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

Does what it says

Alberta A Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

Im a converted believer! Heat from the top, through conduction not from the bottom, creating condensation! This unit is well built and safe. Set it on top of your engine, plug it in, wrap cowl, forget it. Simply go flying in the morning, your engine is preheated and ready to go. I love my Twin Hornet!

Bruce T Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

This hornet22 heater surprised me. I put it on top of the cyls. on a 40 degree cold aircraft engine at 6m, next day at 8am the oil was 62 degrees, EGT was 60, CHT was 62. Impressed with this for sure.

Lee S Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

The heater is useful, as described and came with a long and quality cord. I would recommend it for none deep freeze temps. Above 15 degrees would be a guess. below that, you may need a larger output temp.

Joseph B Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

Great product. Just plug it in and leave it.

David D Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

I love this little heater! My engine remains warm with the oil temps consistently in the low 60’s in an unheated hangar where the temp has been 20-30F.

James R Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

Fantastic! Shipping was fast as usual. Just had a 25 degree evening and my oil was 68 degrees the next morning.

John A Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

Works great. What more needs to be said.

Robert S Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

Best heater i have had.

Robert N Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

Solid unit. Several times I would not fly due to not turning on my block heater the day before. This is low heat, but enough to keep the engine at solid starting temps at all times. I should have bought it years ago.

Jason P Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

Great product. Works better than expected. Followed instructions for heater placement and blanket around cowling. Maintains 60-ish engine compartment temperature.

Mike C Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

The twin hornet is small but mighty. It takes about 2 days to heat a cold soaked engine and keeps it warm even at 10°.

Travis M Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

Nice heater, I would recommend to anyone. I set it on the top of the motor and works in sub-zero weather.

Roland K Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

Works as advertised. I placed it on top of the cylinders, put the cowl plugs in and blanket on top. Less than 24hrs later the cylinders were 67 degrees, bottom of oil filler tube was 61 degrees. Inside of hangar was 53 degrees and the airplane was cold soaked. Hassle free, no mess, safe & too easy.

Jeff W Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

Exactly as advertised. Work great and quality is good.

Chris Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

Great product...well thought out and solves the problem of difficult starts in the cold. Definitely recommend.

Richard A Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

Great unit, with engine plugs and a blanket over the cowling it keeps the engine at around 65* at an air temp of 15*. Quiet, safe and very easy to use.

Tom S Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

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

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

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

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

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

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

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

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

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

Works as advertised. I have it set up on a smart plug and Wi-Fi so I can turn it on from home. At 20 degrees F in my hanger it had my oil temp to 75 in a few hours.

Clifton W Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

So I bought this heater hoping for a good solution to my Red Dragon and freezing my butt off standing outside watching it. I put it in last week. In our area we have had lows in the teens and highs in the low thirties all week. I was curious to see how it was working. Have not been able to fly because of the weather. I went out yesterday, OAT was 30F, it was 19F in the morning. The GEM monitor shows all CHTs at 46 to 49 degrees. The unit is doing what it is supposed to do without cooking my engine. So far so good.

working as advertised

Arthur M Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

Excellent, it works as advertised.

Utah V Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

This product turned out to be even better than I had hoped, after receiving it, and reading the instructions, and realizing how much research went into this high quality heater I couldn’t be happier with my purchase

Shawn G Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

Good product.

Steve B Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

Works as advertised. Carry bag is helpful for portability.

Scott S Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

Not for Europe 240 V AC

Pafok O Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

Worked well and didn’t harm any component. Engine started without hesitation.

John G Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

This is a great unit, i use it with my C180- i travel to remote sites for work, plug this into a generator and tent the engine, at -20c the engine is toasty warm after 12+ hours. - its expensive but the man has to recover his costs, this is not a hair dryer disassembled and stuffed into a yellow box.

Lake P Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

Just what I was looking for …smaller than expected so easily fits through cowling

Underground A Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

This heater works just like the manufacturer says it will! Read and follow the instructions... Super easy. I initially left this powered on for one week, with three blankets over the cowling. The outside low temps were in the high teens and low 20s, and plane is in an uninsulated hangar. The thermostats work as intended. I checked on it periodically during the week, and it was not running constantly, which was a concern of mine. Engine start up was much healthier than when using oil pan heater, which I will no longer use. I now recommend this heater to everyone. I love that this heater is built just for this purpose.

This heater does exactly what it says. Plane starts like its summer when temp is in 20s!

Joseph F Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

Excellent Product, Well made and works as advertised.

Milon W Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

excellent unit if power is available

Timothy H Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

Just place it in the engine compartment, plug it in, and cover the cowl with moving blankets and the device takes care of the rest. Oil Temps in the mid 50s when Temps in the low 20s.

Douglas M Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

I’ve had this a week here in Reno. Outside Temps in the morning have been in the twenties. Cylinders and oil temps have been in the 50s so it is doing the job One issue, I have is the cowl on my aircraft (1964 Mooney M20c) does not allow me to insert the heater into the cowl, so the heater is sitting in front just behind the prop. I put an extra moving blanket on and clipped in tight around the prop. The back cylinders end up being a few degrees colder than fronts.

This device was not what I expected. When it arrived I read the instructions and put it back in the box without plugging it in. The instructions required the unit to be placed in the cold for an hour prior to being plugged in then to allow 48 hours of heating to bring the engine up to warmth. This would be fine if the heater was plugged in and if a continuous electrical supply was available. At least two airports here (PAMR, and PAAQ) have electric parking spots on 30 minute timers (30 on 30 off.) which would also limit heating particularly at sub-zero temperatures. I did like the dual redundancy concept.

Robert W Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts

Nice safety features for heating in a potentially explosive environment. But not enough watts to raise the temp in northern (Alaska) winters even with an Alaska made insulated engine cover. Manufacturer said maybe I should buy two! That would probably work but I would rather have Reiff or Tanis.

John F Verified Purchase

Twin Hornet 22 Heater Dual Fan 120V 250 Watts