The Eccotemp L5 Portable Tankless Water Heater is the original and best selling portable water heater on the market today! You get instant, endless hot water wherever you are! The Eccotemp L5 Portable Tankless Water Heater is perfect for campsites, cabins, or simply around the house. Wash your car, wash your boat, take a hot shower, wash the dogs or the horse. You can add the Eccotemp L5 Portable Water Heater to a pressure washer for an even better cleaning! The ignition is with 2 "D" cell batteries so it makes it great for off grid or other areas where electricity is not readily available. The ideal operating range for the Eccotemp L5 Portable Tankless Water Heater is 20~80 PSI. The system also works great on modified water systems with items such as a 12 volt pump. The ideal operating range for the Eccotemp L5 portable tankless water heater is 20~80 PSI. The system also works great on modified water systems such as a 12 volt pump. Total dimensions are 14.5" tall, 11.5" wide, 4.5" deep and weighs about 13.8 pounds. This unit requires a 2" clearance from a wall, 1' side to side from anything flammable, 3' from a window as well from an overhang, and 18" from the ground. The L5 will offer a 30 to 35 degree rise at 1.5 gallons per minute.