AO Smith® 100374891 ATHR-199X3 Adapt®+ Premium Tankless Water Heater, 199,000 BTU, Natural Gas, LP Conversion Kit Included

Item Features

• Field convertible from natural gas to liquid propane
• ENERGY STAR® certified with a UEF of 0.95
• Flexibility in Installation—PVC venting flexibility (2” up to 50’ & 3″ up to 150’); Install indoor or outdoor (outdoor kit sold separately)
• Save up to $116/year on operating costs—Compared to a standard 50-gallon atmospheric vent natural gas tank water heater
• Lasts 3x Longer—Integrated X3® Scale Prevention Technology provides protection for the heat exchanger
• Expandable for Larger Applications—Cascade up to 12 like heaters when multiple water heaters are required to work in conjunction (cable included)
• Built-in Control Display—Check status, error codes and settings using the built-in display