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Xtreme Heaters Small 400W XHEAT Boat Bilge and RV Heater

Xtreme Heaters Small 400W XHEAT Boat Bilge and RV Heater

Regular price $369.00 USD
Regular price $399.00 USD Sale price $369.00 USD
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Xtreme Bilge heaters Suitable for boats up to 24' Length and Small RV compartments 

SHOP MEDIUM HEATER HERE (28′ Length and RV medium sized compartments)
SHOP LARGE HEATER HERE (35′ Length and RV large size compartments)

  • True Forced Air Heating circulates air more effectively and heats more evenly for more accurate climate control.
  • Automatic Thermostat turns the heater on at 40°F and off at 55°F +/-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 15ft marine rated power cord with 110V 3 prong plug eases installation.
  • Maximum Life - Designed for durability and reliability.
  • Complete Protection: Fully anodized inside and out.
  • Small Footprint
  • Certified and Independently Tested now with the UL 1278 standard

Our mission in creating the Xtreme Heater was to build the safest, most reliable and efficient product available. Our heaters are the safe and easy answer to keeping you on the water longer.


  • Wattage: 400W
  • BTU: 1365
  • Inrush (startup) current 8.2 A1 sec.
  • Typical operating current is 4. A
  • Fan flow 58CFM
  • IP68 (Waterproof) rated Fan
  • Heater Dimensions: 5.75″ x 3.5″ x 5 1/8″
  • Box packaged Dimensions 10″ x 6″ x 6″
  • Fuse size required 15A
  • 15ft marine rated power cord
  • UPC-895670001217

Suitable for boats up to 24′ Length

Weight 4 lbs
Dimensions 5.75″ x 3.5″ x 5 1/8″


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    Customer Reviews

    Based on 53 reviews
    Patrick Case
    It Works!

    Great product! Works just like it should. Tried other heaters, ALL failed. This heater works Grest!

    Randy Hyde
    Very nice well built unit

    Nicely built! Works as described and has a good warranty to go along with the quality.

    Robert Dilworth
    Small Xtreme heater

    I love your product but I should of ordered the larger heater instead of the small one. I placed it in the engine compartment of my Cigarette boat with twin engines. Once the weather was lower than 32 deg it had a hard time keeping up. It's a small compartment about 6ft X 8ft X4ft with a hatch cover along with 3 top covers and vents are 99% covered. It was 25 deg outside and heater got to 31.6. Thank God i had wifi thermometers in there so i know the temps 24/7. Or i would possibly be buying new blocks. I then had to put an additional heater inside which is now at 56 deg. I may use it next year for the basement of my motorhome but then I don't think it will be powerful enough. I do plan on purchasing a much bigger model for next winter.
    Ps, I don't think the website accurately describes the performance of the heater.

    Isaac Rodriguez
    Works as advertised

    This is the first season using it. It works as advertised keeping the engine compartment between 40-50 degrees.

    cool to the touch

    We've been using this under our camper and it's been working great maintaining the temperature. I really like the fact that it doesn't get hot,the unit stays cool to touch.