eccotemp l5 1.5 gpm portable outdoor tankless water heater eccotemp whether you’re camping with the family, spending a day at the lake, or lounging around the pool, sometimes all you need is a nice hot shower. simply attach a garden hose and a 20 lb. propane tank and you are guaranteed to enjoy the luxury of endless hot water anywhere. the eccotemp l5 portable propane 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 l5 is perfect for campsites, cabins or simply around the house. wash your car, wash your boat, take a hot shower, or even wash your horse and the l5 will help make daily tasks much easier. the l5 is capable of reaching temperatures between 50 to 140 degrees fahrenheit. this model includes an electronic ignition powered by 2 "d" cell batteries making it great for off-grid or any location where electricity is not readily available. the ideal operating range for the l5 is 20~80 psi with a 1.5 gpm flow. it is compatible with 12-volt pumps and works perfectly with our eccoflo pump & strainer.