The Eccotemp L5 Portable Thankless 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 Thankless 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 Thankless Water Heater is 2080 PSI. The system also works great on modified water systems with items such as a 12 volt pump.