Why Use a Bilge or Engine Compartment Heater at all?

If you’re like us, you hate to see the boating season end. But it doesn’t have to, with one of our Xtreme Boat Heaters installed in your boat!

Have you ever been caught off guard by an early winter freeze? Have you ever de-winterized the boat to enjoy an early warm spell, only to have to winterize the boat once again for that last late spring freeze? 

Freezing temperatures can damage critical equipment in your boat and put a drain on your battery system if you’re caught unprepared. The result can be thousands of dollars in repair bills. Don’t be “that guy” that takes chances with unsafe products such as light bulbs and household space heaters or other inferior products in your bilge. Take a look at what can happen. Designed specifically to be safe on your boat, Xtreme bilge heaters prevent freeze damage to your boat’s engine and other critical components in your engine compartment without the fire hazard standard household products present.

Xtreme: The Heater Built Specifically for Your Boat

Our mission in creating our line of bilge heaters was to build the safest, most reliable and most efficient product available. We wanted our heaters to be the safe and easy answer to keeping you on the water longer.

We designed it to last the life of your boat, so instead of following tedious winterization procedures every time the weatherman brings the bad news of a freeze, simply plug in your Xtreme Heater for fully automatic, completely safe freeze protection and peace of mind. Learn about how Xtreme heaters work.


Xtreme heaters were the first product of it’s type to be tested by the independent IMANA Labs, to meet or exceed Coast Guard and ABYC standards. We then went further, testing our products against MILSPEC (Military Specification) ratings for heat, cold, moisture and vibration. We passed all with flying colors, which has earned our product the trust of our military, where it is installed in special operations vessels, as well as homeland security vessels across our nation.

Read a full report on our heater testing and results.


We chose modern, efficient, PTC (Positive Temperature Coefficient) technology for the core of our heaters. PTC heaters are self-regulating, offering safety and efficiency gains unmatched by older style resistant element heaters.


Each component in our line of bilge heaters was chosen specifically for the harsh marine environment they live in. A fully anodized aluminum case, a sealed electronics module, marine rated power cord, and our exclusive waterproof fan ensure your heater is the safest and most reliable engine compartment heater available, ensuring years of trouble free operation.

Compact and Flexible

Xtreme boat heaters are the most compact bilge heaters available. They can be mounted in any orientation, including vertically, horizontally or even upside down. With our optional Quick Release Bracket, your heater can be installed for the winter and removed for the boating season, no tools required.

All Xtreme Heaters come with a 2-year warranty