The Xtreme Marine Boat Engine Compartment Heater was developed to provide a safe and consistently reliable solution to protect your boat’s engines and critical components from freeze damage. Whether part of your overall boat winterization strategy, or a way to extend your boating season in colder months, Xtreme’s boat engine heater is key. Our customer testimonials demonstrate the level of satisfaction our products have brought to boaters in the US and around the world. Read our Choose your Heater Guide to get the right heater for your boat. Xtreme Heaters come with a 2 year warranty.