Our flagship home model has been providing hot water in homes since 2009!The EZ Deluxe by EZ Tankless is a whole home tankless water heater designed for 1-2 bath homes. At 87,500 btu/hr it can produce 3.4 GPM @ 45F rise. The unique direct vent kit (included with the unit) is both intake air and exhaust in one concentric 4" flue. This allows for only one hole in your wall and does not rob any air (heating or AC) from the room in which the unit is installed. The EZ Deluxe is also fully automatic, meaning the unit fires up with water flow and shuts down once the tap is closed. No pilot light/stand-by energy loss. It also features a computer regulated gas valve that will adjust the burners according to water flow. Once you set the temperature on the LCD screen the EZ Deluxe will do the rest of the work to ensure the correct temperature is reached. - 88% Efficiency Rating - 1/2" Water Connections - 3/4" Gas Connection - 110V (surge protector recommended) **Please note that this unit must vent horizontally through an exterior wall to the outside (as pictured). This unit is not designed to vent vertically. If you have any questions please feel free to send us a message.