About this item #1 Engine Compartment Heater > Our bilge heaters for boats, rv underbelly, campers, well houses, boat cabins, greenhouses & more is now 10% smaller with a 150 watt increase! Keep your boat safe! Easy to Use > Self-regulating PTC Element. Turns on at 40° & off at 55°. Giving you consistent engine compartment temperatures, always. Extreme peace of mind! Durable > Get a lifetime of use from the anodized case, sealed electronics module & our exclusive 58 CFM waterproof fan. Our boat bilge heater can be mounted any direction, even upside down. Stay Safe > Our freeze protection heater is made for harsh, enclosed engine compartments. Exceeding Coast Guard, ABYC & MILSPEC certifications for heat, cold, moisture, & vibration. Our heaters have been in boats, rvs, etc for over 20 years now keeping them protected! Advanced Freeze Protection > Features a tricolored LED indicator to make it easier for self-testing & ensuring the marine heater reads the ambient temperature accurately. Includes > 15-foot marine rated 110v power cord w/ 3-prong plug. Use as a cabin heater, rv bay heater, well-house heater, boat storage heater, bilge heater, greenhouse heater, lithium warmer, & more! Xtreme Heaters Promise > Our mission is to build the safest, most reliable & efficient engine compartment heater. Our marine heaters includes a 5-year manufacturers warranty. › See more product details