Xtreme Heaters Boat Engine Compartment Heater | Large 800w Bilge Heater - For Boats Up To 35 | Boat Heater, Well House Heater, Camper/RV Heater, & Marine Heater - Safe Self Regulating Bilge Heater

This is the second Xtreme heater Ive bought. Great engine room heater, still using the first one and after six years, havent had any issues. Would recommend if you need a dependable engine heater.

Very happy with the product and the tech support. Simple to install. Will most likely add a second one next year.

I have 4 SOK 206 amp batteries in a bank that I need to keep up over the winter. I had to bring them inside due to the extreme cold and put them on a charger to maintain them. The charger brought them back to the storage voltage and they are doing fine. Then I installed this heater in the battery/ electrical compartment of my RV which is only 120 square feet, and reinstalled the batteries. The heater is running on one of my Renogy inverters. Now the space has stayed 40+ degrees and the batteries haven’t had any issues. Cold weather and batteries are mortal enemies but this little guy came in and saved the day.

Easy to install! Gives me more use of my boat in the winter. I live in the south were temps almost never go below freezing for a few hours and gives me peace of mind that the engine compartment is nice and toasty!

The heater I received does not work. Temperatures will be dropping below freezing this week and Im out $400 and no way to safely heat my engines.

Convenient and easy to use compartment heater that does the job right in protecting your boats engine during the cold off season.

Worked as advertised. Maintained 40°-50° in my bilge during 20° weather.

Perfect for my boat!!

1st impression when unboxing -- man, this thing is built tough! And that continues to be my impression after utilizing it through this mild winter. Now the hard part of reviewing its operation. I utilized it in my boats small cabin throughout the winter since I cant use it in my small bilge due to power cord routing problems (I would pinch the power cord after placing it in my bilge and closing the bilge hatch. SO using it in the cabin area? Well lo and behold we had a relatively mild winter and I noted that the water temperature (and thus the cabin for the most part) never really got below 43 degrees F that I know of. The heater did kick on the few times I was there long enough to observe. But it didnt seem to run for any length of time, and certainly didnt kick-on long enough to attempt to bring the temperature up to 55 degrees F. That part is a bit perplexing to me since I would think that even with testing (using a refrigerant spray) to bring the temperature down you would think it would continue to run until it brought the 43 degree surrounding temp up to 55 degrees. But it never did that, it would run for a short time (even with strong 43 degree air circulation in the area) and then shut off. Again, it may be because of the warm winter. Even though most of my bilge area is below the waterline, thus remaining at the seawater temperature for the most part, I do plan on mounting this permanently (with the quick latch) in the bilge area and running the wiring to a gunwale receptacle so that shore power can be plugged into it directly (no wires through hatches). That way I can set it and forget an only run the shore power to that receptacle in the winter. Ill also look at mounting it high in the bilge compartment since that is the area that will be most influenced by the above the waterline temperatures of the outside air vice the surrounding water temperature.

Looks like a great product.