Ive installed three of these for various customers in short order and all where good quality, arrived quickly and a straight forward install. They work well for this area where we have pretty mild winters. Just plug it in, go get a coffee for an hour and when you are ready to go it has warmed the oil and engine noticeably.

Schledorn E Verified Purchase

E-Z Heat Engine Heater 440 110V/120V

Easy to apply and for a good price. Highly recommend the Click-Bond wipes for cleaning and prepping the surface beforehand.

Rich L Verified Purchase

E-Z Heat Engine Heater 440 110V/120V

The heater was easy to install by following the enclosed directions. Heater works well even in very cold temperatures

Jess D Verified Purchase

E-Z Heat Engine Heater 440 110V/120V

Complete kit includes RTV and plastic spreader. 3M adhesive is amazing. Works as advertised. Its so nice to check the oil and feel how warm the dipstick is.

James D Verified Purchase

E-Z Heat Engine Heater 440 110V/120V

Heats oil and engine quickly! I purchased the model #440 for an 0-320 and I couldnt justify spending the money some other brands out there wanted. Installation was easy and probably took only 30 minutes, with most of the time spent removing cowling and cleaning the area where the pad sticks to.

Timothy P Verified Purchase

E-Z Heat Engine Heater 440 110V/120V

Easy and installation and works great!

Chad F Verified Purchase

E-Z Heat Engine Heater 440 110V/120V

Great product, easy install lots of quick heat. Highly recommend.

William F Verified Purchase

E-Z Heat Engine Heater 440 110V/120V

So far so good. Easy to install and works as advertised

James K Verified Purchase

E-Z Heat Engine Heater 440 110V/120V

Works great,highly recommend them!

Daryl S Verified Purchase

E-Z Heat Engine Heater 440 110V/120V

EZ to install, should have done it awhile ago

Lester M Verified Purchase

E-Z Heat Engine Heater 440 110V/120V

Bought this for my bmw. Amazing. 440 fits an m54 sump beautifully, like it was designed for it. Heat works in an instant. What a brilliant addition.

Great product. Easy install on my Rans S-21 Titan engine. Paired with a Smart plug and surge protection I can turn it on and off with a cell phone.

Darrell M Verified Purchase

E-Z Heat Engine Heater 440 110V/120V

Fit engine O-360 perfectly. Easy to install. Don’t yet know how well it will heat.

Scott J Verified Purchase

E-Z Heat Engine Heater 440 110V/120V

I bought this about five years ago for my 172. Looking through old orders to see how many watts it is and I see I never left a review. Five years strong in Ohio winters. Pad itself gets too hot to the touch within 15 seconds. I have a digital temperature gauge shoved down the dipstick hole. Displayed temperature maxes out at about 92°F when its 32° outside. I notice that if ambient fluctuates say 5°, so does the oil temp. Will noticeably warm the engine, as well. Not very much, but certainly more than ambient. Adhesive has stayed 100% strong through about 600 hours of flight.

Great heater. Easy to install.

The order came on time and the heater appears to do a nice job, but it has only been on the plane for 3 days and plugged in once. So far so good!

Was easier to install than I thought it was going to be and fit nicely on the oil sump of my O-360!

This was easier to install than I thought, it fit perfectly on the bottom surface of the oil sump of my O-360 and the paint was easy to remove. I was able to prep the oil pan and install it by removing only the bottom cowl, a bit cramped but doable. I used one of these through the winter months on the plane I trained in in NC so I expect similar results this winter.

Installed on O-320-B2B. Make sure you have it lined up perfectly before you stick it on. I installed this when ambient was around 35 degrees. Have not tried leaving it constantly plugged in, but works very well. Plenty of cord to run it either way around the block to a convenient location.

This is a nice economically priced heater that is easy to install. (The hardest part of the installation is likely to be getting access to the underside of the oil pan and getting it properly cleaned.) That said, the claimed power output of the heater is inaccurate, really, wildly optimistic. I installed a Model 440 heater on an O-360, and its resistance measured at 70 ohms. A simple application of Ohms law tells me the heat output is 205 watts with a line voltage of 120, not the claimed 285. Since the airplane is on an outdoor tiedown on a long circuit, the actual voltage and heat output are correspondingly less. I confirmed this with a clamp-on ammeter. This was not just a bad unit I received. I peeled off the first one I installed and returned it as defective, and the replacement unit measured exactly the same resistance right out of the package. I called the company and they admitted they make them with a substantially higher resistance than specified. All in all, the heater makes it safe to start the engine in cold weather, but it still needs warmup time before you can go. Theres certainly no risk of overheating!

Bought this over a year ago works great. Only good to about -5c though after that I use a space heater with this. Nice that you can plug the plane in the night before and the oil will be half warm. Wish it got a bit warmer or offered a larger version. Still take some time to build oil pressure on start but definitely helps.

I purchased two of these for my Piper Seneca and had to return them after examination before installation. The manufacturer boasts Easy installation..., but I think that relates to the self-adhesive back on the heating pad. Routing the electric cord and three-prong grounded plug through a snugly baffled TSIO-360 is not an easy project. The plug, cord, thermostat and heating element are a single unit and cannot be separated to facilitate installation. (Similar products can.) Substantial disassembly of the baffles would have been required to install this product. (I would have had to charge a customer at least three hours of additional labor.) On a separate note, this product is only FAA Accepted while other similar ones are actually FAA-PMA Approved. Im glad I looked at it more closely but would only recommend an approved part to my customers going forward.