The Airtronic S2 D2L 12v Truck Kit with Digi-Max Controller, puts out 7,500 BTU of clean comfortable heat and is ideal for heating adventure vans. It has a higher heat output than competitive models and is equipped with a standard fan-mode for nights when air circulation is preferred instead of heating. The Espar Airtronic S2 D2L Van kit comes complete with all components necessary for installation including: Heater, Digi-Max Controller, fuel system, mounting hardware kit and all ducting. High altitude functionality allows it to operate up to 9,900 feet!