Rated at 199,000 BTU, V94 Non-Condensing Tankless Water Heaters deliver endless supply of hot water with space-saving design suited for new residential construction. Units feature energy factor up to .82 EF and low NOx emissions. Five models are available: two V94i models in natural gas and propane for indoor use, V94Xi available in natural gas only for indoor use, and two V94e models in natural gas and propane for exterior installations.