How much is peace of mind worth?  Anyone that owns a boat has  made a significant  investment to enjoy the thrill of being on the water.  My Extreme Heater gives me the peace of mind to know that my investment is safe during those cold winter months.   Installation was simple and  the pre-programmed heat settings were perfect for my environment.  Quality construction and a great overall value.  Count me as a very satisfied Extreme Heater owner.   Sam Baker  2012 Ranger Tug R25