A.O. Smith ATI-240HX3-N 160M BTU Condensing Indoor NG Tankless Water Heater SKU: ATI-240HX3-N

The Proline® XE Condensing Ultra-Low NOx series with X3® Scale Prevention Technology is well suited for residential applications. A. O. Smith has combined water heating and treatment in a product designed to revolutionize tankless water heating. Our new condensing gas tankless line features X3® Scale Prevention Technology to last three times longer than other tankless models without X3® Technology. Complies with Ultra-Low NOx regulations. These tankless heaters utilize commercial grade copper alloy for the heat exchanger tubing and are approved to work with an external recirculation pump and cross-over valve. Certified up to 10,100 ft. altitude.