2 Pack of Xtreme Heaters Large 800W XXXHEAT-Boat Bilge Heaters
2 Pack of Xtreme Heaters Large 800W XXXHEAT-Boat Bilge Heaters
SKU:XXXHEATx2
Separate engine rooms, Boats with a wide beam, Engine room and lazarette, and Added capacity and circulation
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About this Heater
Save with a 2 Pack of the Xtreme Heaters Large 800W Bilge heaters
Xtreme Heaters bilge heater Suitable for most boats up to 35′ Length
The 800W Xtreme Heater is the ideal solution for boats up to 35 feet, including larger cruisers, day boats, runabouts, cuddy cabins, fishing vessels, house boats, and yachts. This large bilge heater is designed to effectively maintain above-freezing temperatures in your engine compartment, providing robust protection against cold weather.
With its powerful 800W output, this heater is perfect for larger vessels, offering reliable performance that ensures critical areas of your boat stay warm. Whether your boat is in the water or stored on a lift, the 800W Xtreme Heater is an essential tool in your winterization process.
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True Forced Air Heating circulates air more effectively and heats more evenly for more accurate temperature control.
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Mounting orientation flexibility: Horizontal or vertical installation supported, even upside down.
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Automatic Thermostat turns the heater on at 40°F and off at 55°F (+/- 3°F) for tight, reliable control.
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Failsafe Design cannot overheat; the heating technology is dynamic and self-regulating.
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High Efficiency produces heat faster, circulates more air, and shuts off earlier to save energy.
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Pre-wired 15 ft marine-rated power cord with a 110V 3-prong plug for plug-and-play installation. No hardwiring required.
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Maximum Life: Designed for durability and reliability in harsh environments.
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Corrosion protection: Fully anodized inside and out to resist corrosion in wet and salt-air conditions.
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Mounting hardware included: Stainless Phillips head screws.
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Energy note: thermostatically controlled can reduce energy use up to 75% compared to continuous-run heaters.
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Certified and independently tested.
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IP68 rated: The assembly is sealed for rugged use—resists dust and moisture exposure in dirty, damp conditions and handles wet, harsh environments without failing.
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Ignition protected: Tested to U.S. Coast Guard standards (USCG 33 CFR 183.410) and SAE J1171.
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Mil-Spec tested: MIL-STD-810E Method 514.4 for vibration, humidity, and high/low temperatures.
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5-year warranty (best in the business), backed by U.S.-based support.
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Built for freeze protection in compartments, enclosures, Marine engine compartments, and utility bays.
Maximize the advantages of incorporating a second heater onto your boat - increased coverage and even distribution of warmth. Strategically position them in a clockwise pattern to optimize their supplementary role in circulating heat throughout the engine room, similar to a push-pull effect. Ideal for larger areas or colder environments requiring additional heating.
As product and industry experts, our goal for the Xtreme Heater was to produce a highly safe, dependable, and efficient option on the market. With our heaters, you can confidently stay on the water for extended periods.
SHOP 2Pack SMALL HEATER HERE (Boats 24' Length)
SHOP 2Pack MEDIUM HEATER HERE (Boats 28′ Length)
Specifications
- Wattage: 800W
- BTU: 2729.7
- Inrush (startup) current: 13.5A, 1 sec.
- Typical operating current: 6.8A
- Fan flow 58CFM
- 69.2 Db
- IP68 (Waterproof) rated Fan
- MTBF for fan: 40,000
- Heater Dimensions: 8″ x 3.5″ x 5 1/8″
- Box packaged Dimensions 12″ x 6″ x 6″
- Fuse or breaker size required 20A
- 15ft marine rated power cord
- UPC-895670001262
Suitable for boats up to 35′ Length
| Weight | 6.0lbs |
|---|---|
| Dimensions | 8 × 4 × 5 in |
Because boats vary in materials, insulation, and design, it's essential to carefully assess your specific needs and climate to determine the most suitable heater. In some cases, depending on the size and configuration of your boat, more than one heater may be necessary to ensure adequate protection.

