The Eccotemp L10 Portable Tankless Water Heater is one of the hottest tankless water heaters on the market! The Eccotemp L10 Tankless Water Heater gives you endless hot water at your cabin, summer cottage, lake home, potting shed, RV, camper, horse washing stall or wherever else you need hot water. The Eccotemp L10 Portable Tankless Water Heater delivers up to 2.6 Gallons Per Minute of hot water ranging from 80-145 degrees F, plenty for 1-2 hot water applications running at the same time. The 2 "D" cell battery ignition starts the flame only when water is running, so there's no chance of overheating. It is perfect for off grid or areas where you have limited electricity. The L10 comes with standard 1/2" NPT fittings. The ideal operating range is 20-80 PSI. The system also works great on modified water systems with items such as a 12 volt pump.