A.O. Smith
A.O. Smith® ATI540HX3-N ProLine® XE Tankless Water Heater, Condensing Ultra-Low NOx Indoor 199,000 BTU, Natural Gas
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- The 540X3 series 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. The 540X3 utilizes commercial-grade copper alloy for the heat exchanger tubing. Certified up to 10,100 ft. altitude.
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ATI540HX3-N 199k BTU Natural Gas Tankless Water Heater with X3™ Anti-Scale Technology, Indoor
- X3TM Scale Prevention Technology - Extends life of unit up to 3 times longer and no annual descaling required.
- Includes freeze, overheat, surge protection and troubleshooting diagnostic codes.
- The primary heat exchanger is constructed of commercial-grade copper, which is stronger than standard copper and more resilient against erosion
- Condensing models feature 316L stainless steel secondary heat exchanger, providing additional protection against corrosion
- Fuel TypeNatural GasHeating Capacity199,000 BTU/hrVent TypePower DirectDigital DisplayYesDimensions23-5/8" H x 11-1/4" D x 17-3/4" WENERGY STAR® CertifiedYesHeat ExchangerCommercial Grade CopperLEED Rating1.5ManufacturerA.O. SmithManufacturer #ATI-540HX3-NMounting TypeWallSecondary Heat ExchangerStainless SteelSeriesATITechnologyCondensingTypeSpace SavingVent Length70 feet at 3 diameter / 100 feet at 4 diameterVoltage Rating120 VWater Connection LocationBottomWater Connection Size3/4 in