Eccotemp 45H-LP 6.8 GPM Outdoor Propane Tankless Water Heater, White Whole home outdoor,Propane Gas powered tankless water heater, rated at 6.8 GPM that activates only when in use, making it an energy effiecient and perfrect for any home. apartment or townhome! The Eccotemp 45H/HI series is CSA Certified for US and Canadian use guaranteeing a safe, easy, and enjoyable installation experience. No venting required for this model, making the installation process quick, easy and hassle free. The outdoor installation will save space in your home and because it is compact and quiet, you will barely notice it is there. Comes with a Temperature and Pressure Relief Valve, a Gas Shut-Off Valve and is equipped with 3/4" NPT fittings.