Custom Weld Storm with Xtreme Heater The Xtreme Heater works great in the hull of my Custom Weld Storm. Fishing year around on the Columbia River for Sturgeon and Salmon takes a toll on cold engines when the temperature drops below freezing. With the Xtreme Heater, I have no worries! Custom Weld Storm with Xtreme Heater Oscar Carlson, Battle Ground, WA I am glad to count on the Xtreme Heater to maintain a constant heat in my engine room. This is special. Very excited to be able to use my boat year round!!