I live aboard my 36 foot Pearson Cutter in Seattle and I installed an Ardic Diesel hotwater heating system about three years ago. I also have an Everhot 6 gallen copper boiler in line with the heater that works as a hot water heater for water usage aboard the boat. The system has a single hot water radiator with a built in fan and four air hoses are run from the radiator throughout the boat. It works great, keeps the boat very toasty and dry as well as heating all the hot water I need for showers and such. It is also very economical on it''s diesel useage. If you want more info drop me a note at FarAway_Lou@msn.com.