Which Heater Is Best For Keeping 32 Foot Houseboat From Freezing In Winter?

Published 09/30/2025

Question:

I’ve got a 32’ houseboat with twin engines. Would the 800W XH27FR give me full coverage, or do I need two units?

asked by: Alan

Expert Reply:

Alan, the 800W heater from Xtreme # XH27FR is designed for boats up to about 35 feet, so a single unit can often cover a twin-engine cruiser if it’s well sealed. In bigger, packed compartments with pumps and plumbing, many owners place two heaters outboard of the engines to promote circular airflow. If your bilge has a lot of equipment crammed in, that dual setup may be more reliable.

Do you store the boat in the water year-round or pull it out in winter? That can make a big difference as boats stay warmer and more insulated when surrounded by water instead of cold air.

expert reply by: Andrew N