Offered as a complete do-it-yourself kit, this ABYC-compliant heater runs quietly and operates up to 20 hours on a single gallon of fuel. Kit includes heater and controller, fuel pump in enclosure, ducting, connectors, thru-hull exhaust fitting, fuel line, exhaust water trap, mounting bracket and hardware plus documentation. It offers excellent heat output and optimal economy. Air top Evo M Control offers multi-mode operation to suit individual heating needs. Control modes include ECO mode for reduced electrical power consumption, Power mode PLUS for increased power output and ventilation mode to provide fresh air to your cabin on hot days. Warranted for two years of operation.