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

I’m using the product as intended, to heat an engine compartment. My boat is 26’ and the compartment is roughly 8 x 8 x 3. The heater is well built. But my boat is not in the water and I have it at home where the hull is not insulated by the water it would sit in. Thus the heater just can’t keep up with the cold Temperatures. I had to supplement it with another heater, and even then it was on a LOT, IT sucked on the power bill. It probably would be fine for a smaller compartment like a ski boat. Or a boat in the water. UPDATE Over the winter of 2021-22 I kept the boat in the water. As I thought, the heater kept up with the cold just fine with the insulation of the water around the hull. And the electric bill was minimal.

First big dip down to the freezing mark of the season, purchased this heater to simply sit in the bilge for our 24 footer which lives outside on a lift at the marina. As I write this, just checked on the boat at the marina for the first time, it is 37° outside temperature, I have a big winter cover on the boat, went inside and pulled the bilge cover, and this mighty little heater was on and the entire bilge and engine block area was very comfortable and warm. first check of the new heater of the season so I’ll reserve judgment for durability, but at this moment it is doing exactly what it is supposed to do. Wonderfully happy and extra peace of mind.

this was just what i needed... small but great quality for my boat

Installed as a pair... Worked well to help delay winterization and keep the diesel engines ready to start when temps dipped into in the low 20s last month. Recommended.

This is exactly what we needed to keep the bilge warm for the winter in Charleston. Easy to install, good directions and lots of safety features. It was recommended by someone who has them over the years and they are reliable.

The 300w extreme heater is solidly constructed and has a very substantial cord (glad I didnt need an extension cord to reach an outlet). This is a perfect size for my Mastercraft Prostar 190. Winterization can cost several hundreds of dollars and boat storage fees also add up over time. I calculate that this heater will pay for itself in the first year and allow me to keep my boat on the water throughout our mild Southern winters. I wanted this heater to extend my season for the unseasonably warm fall days and allow me to take cruises in the early spring as well. Now I dont have to worry about the block cracking during a freeze because I know that this heater will keep everything warm. Very glad I purchased this product. My only regret is that I didnt order one sooner. Happy boating.

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.

Makes me more comfortable and the winter knowing that my engine room is protected it from freezing. It appears as though the colder it gets outside but warmer this heater warms up that space. I love this product. 3300 Tiara Yacht owner.

Works great

Plug and play operation. Just plug in and set the location and your set. Works great for well casting or boat