Installing a Boat Heater Tim Barker. A boat heater can help extend your boating season by keeping crew members comfy when there’s a chill in the air. One of the most effective for inboard or ...

Extend the life of your water heater: ... Remove the handle from the ball valve so you can assemble all the 3/4-inch fittings. Build a new drain valve with a 3/4-inch full-port brass ball valve ...