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Xtreme Heaters Medium 600W XXHEAT Boat Bilge & RV Heater

Xtreme Heaters Medium 600W XXHEAT Boat Bilge & RV Heater

Regular price $419.00 USD
Regular price $469.00 USD Sale price $419.00 USD
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 Xtreme bilge heater Suitable for boats up to 28′ Length and Rv medium sized 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: 600W
  • BTU: 2047.3
  • Inrush(startup) current 12A 1 sec.
  • Typical operating current is 5.5 A
  • Fan flow 40 CFM
  • Heater Dimensions: 8″ x 3.5″ x 5 1/8″
  • Box packaged Dimensions 12″ x 6″ x 6″
  • Fuse size required 15A
  • 15ft marine rated power cord
  • UPC-895670001255

Suitable for boats up to 28′ Length

Weight 5.0 lbs
Dimensions 8″ x 3.5″ x 5 1/8″



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    Customer Reviews

    Based on 29 reviews
    Robert Lutz

    Was nervous about keeping our boat on the water during the cold winter months here in North Idaho, not anymore! We have been monitoring the bilge of our 24 ft cabin cruiser via a remote WIFI temp sensor, and so far this heater has performed flawlessly! Finally looking forward to some year-round fishing without worrying about our motor freezing.

    Top notch

    My first winter with xtreme heater on my inboard which gave me a total sense of comfort on keeping my boat protected!

    Survived the Boston Winter (negative 10 degrees)

    I used the medium heater for a mid-sized (and moderately insulated) engine compartment, and it successfully kept the engine and components from freezing, even during -10 degree F cold snaps. Incredible! I did not want to winterize the engine and fresh water system and not be able to use the boat all winter, so this was a perfect solution. Very well built and reliable. Buy the mount too -- allows for easy removal for spring, or easier installation overall if you're leaving in in permanently.

    Pro tip -- if your dock power isn't entirely reliable and you're using the unit as described (to protect an unwinterized engine), I would encourage the installation of a power or temperature monitor. For us, the combo of Victron Cerbo (with temp sensor), BMV 712 battery monitor and 4G LTE Modem (cheap IOT sim card) give us remote alarms when the dock power is lost. I haven't seen temps in the engine room below the mid 40's with the heater installed -- usually hovering at about 48 degrees F.

    Uma Patel
    Many Ways to use the Heaters

    I use my heater in my 1970 VW bus to get it to start up in the mornings. After I installed the Xtreme Heater in the engine compartemnt, the bus starts up every time.

    Thomas Cooper
    Out on the water on Christmas! Beat that!

    The xtreme heater has given me the ability to ride all year round with the confidence that my boat is protected from the elements. It successfully protected my Malibu Wakesetter VLX through historically low temperatures and one of the worst winters on record. I am convinced that the Xtreme Heater is the most cost-effective, reliable, safe, and easy to use product on the market.