No Need To Winterize With an Xtreme 300 Watt Bilge Heater / Engine Compartment Heater - Only $300 plus $15 for shipping. Call Rick at rue Forced Air Heating circulates air more effectively and heats more evenly for more accurate climate control.Automatic Thermostat turns the heater on at 40F and off at 55F +/-3 - the tightest tolerance available.Failsafe Design cannot overheat. Heating technology is dynamic and self regulating. High Efficiency Xtreme produces heat faster, circulates more air and shuts off earlier. Pre-wired twenty feet marine rated power cord with 110 VOLT 3 prong plug eases installation.Max Life - Designed for durability and reliability.Complete Protection