Features to know about

Give Your Engine Compartment Its Own Heat

Even with the hatch closed, the air around your boat's engine and water lines can get cold. This 400W heater adds supplemental warmth where those components need it, with a fan that moves heat through the enclosed space. It's a starting point for many single-engine boats up to 24', but you'll want to look at more than boat length. A boat on a lift or trailer loses heat faster than one in the water, so you may need a larger heater or another heat source. Gaps, poor insulation, or equipment blocking the airflow can make a difference, too.

Leave the Bracket, Take the Heater

You might want the heater secured in your bilge for winter without leaving it in the way all summer. Mount the included anodized aluminum bracket once, then slide the heater into the back and secure the front latch. When warmer weather arrives, release the latch and take the heater out without tools. The bracket stays in place for next winter. You can mount the heater upright, sideways, or upside down, which helps you direct warmth around a crowded engine compartment. Keep the thermostat on the back exposed to compartment air, and choose a spot above any area where water might collect. If you don't need the bracket, the heater-only version is another option.

LED Light Shows What the Heater Is Doing

You won't have to keep turning the heater on and off when the temperature changes. The thermostat handles that automatically, and the LED lets you see what's happening when you open the hatch: green means standby, red means it's heating, and amber means the fan is still running after the heat switches off. That fan can keep going for roughly 10 minutes, so don't be surprised if you still hear it. The heater is intended for unattended automatic operation when properly installed, but a power outage can still leave the compartment cold. During a long freeze, it's worth checking the bilge, especially after a storm or outage.

Ignition Protection for Your Engine Bay

With fuel, wiring, and other equipment sharing a boat's engine compartment, you need a heater designed for that space. This one has an ignition-protected design tested to U.S. Coast Guard and SAE standards for areas where fuel vapors may be present, along with a fully anodized body and an IP68 rating. Plus, the 15' marine-rated cord comes with a standard 3-prong plug, so you don't have to hardwire it just to supply power. You'll still want a properly grounded outlet, a protected plug connection, and enough room for warm air to circulate.