The Condensing Ultra-Low NOx series with X3® Scale Prevention Technology is well suited for residential applications. 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.
The GTS-240HX3-PIH tankless water heater uses up to 160,000 BTU/hr of natural gas to deliver an endless supply of hot water for a 2-bath home in northern climates and up to a 3-bath home in southern climates (one shower head per bath). The new condensing gas tankless line features X3" Scale Prevention Technology to last three times longer than other tankless models without X3 Technology. This heater is extremely efficient with a Uniform Energy Factor of 0.94 and complies with Ultra-Low NOx regulations. With an industry leading 15-year limited warranty, the GTS-240HX3-PIH tankless water heater provides years of hot water through innovation and quality.