Originally Posted by LiteItUp
I have a X2 2010. The heater is electric and not like a car withcoil and core. I would assume you have a electic issue at heater or heating coils are having issues.
Do you have a picture of it?
Every ski boat heater I've seen is a heater core with a fan, using hot engine water.
If it's not blowing hot air, either there's a valve on the hot side line coming off the intake that is closed not letting hot water to the heatercore, or the outlet hose is routed in a way that it's not allowing good flow thru the heatercore. Skidim sells a "Y" fitting that plumbs into the raw water itnake line that increases the flow thru the heater. It's not too expensive, maybe try that.