We put in two new 15000 BTU A/C's 3 months earlier-- ducted in the living space with a new digital thermostat and non ducted in the bed room. A brand-new 12 gallon Suburban hot water heating system was put in 5 months ago. 2 new marine batteries and a 45 amp power converter charge wizard. This device has actually always been winterized and upkeep. This is a 50 amp unit.Length (feet):40.