Haoguo Built-In Boat Engine Heater with Thermostat — 650W Bilge Heater for Boats Up to 350 cu ft

Haoguo Built-In Boat Engine Heater with Thermostat

Boats face a tougher reality in cold marinas or during winter storage. Haoguo's Built-In Boat Engine Compartment Heater targets the heart of the vessel—the engine space, cabin pump, and battery area—delivering warmth where it helps most. The compact unit houses a 650W self-regulating PTC element that starts warming within seconds, giving you practical warmth as outdoor temperatures fall away.

Designed for easy, real-world use, the control knob lets you choose a precise temperature within 411°F (50C) to 861°F (300C), so you can tailor warmth to match conditions on deck or in storage.

Even heat distribution and reliable coverage

A 40 CFM waterproof fan circulates air for continuous operation, spreading warmth across spaces up to 350 cubic feet. The result is a steady, uniform temperature that helps protect components while remaining quietly efficient.

Quality construction matters at sea. Haoguo uses a rust-resistant anodized aluminum case to withstand marine exposure, and a UL-certified cable adds safety and reliability for on-deck and in-cabin use.

What you might notice in practical use

• Prevents freezing in the cabin pump and engine spaces, supporting cold-start readiness.
• Keeps batteries warm and dry, contributing to better performance in frosty conditions.
• Easy installation, portability, and practical design you can move between boats or storage locations.

Designed for enclosed engine compartments up to 350 cubic feet, this heater offers a precise temperature range and rapid warm-up. It presents a sensible option for boaters seeking dependable warmth and targeted protection without overpromising results.