The GT-540X3-PEH is well suited for residential applications. American 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. The GT-540X3-PEH utilizes commercial grade copper alloy for the heat exchanger tubing. Certified up to 10,100 ft. altitude.
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