A furnace and water heater combination with high altitude performance up to 15,000 ft. The Gen1 is a multi-purpose, single appliance designed to save space and weight in a vehicle while still providing the highest level of environmental comfort as well as 2.64 G of hot water. No Anode DesignEasy-to-use ControlsAutomated Timer4 Heating Fan Speeds10 Air Circulation Fan SpeedsOpen Source/ RVC ready20 Minutes to heat the water tank20.1" L x 17.7" W x 11.8" H15.6 A Max Draw169 CFM Air Flow