A.O. Smith
A.O Smith® ATM-180X3-P Adapt® Standard Condensing Ultra-Low Nox Tankless Water Heater w/ X3® Scale Prevention Technology, Liquid Propane, 180,000 BTU/hr
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- ADAPT™ SC Standard Condensing Liquid Propane Tankless Water Heaters with X3® Scale Prevention Technology redefine efficiency and durability in residential water heating. Designed to deliver robust, on-demand performance, these ENERGY STAR® certified units ensure a continuous supply of hot water while maintaining exceptional energy efficiency with a 0.95 Uniform Energy Factor (UEF). The innovative X3® Scale Prevention Technology, integrated into all X3 models, eliminates the need for annual descaling and extends the unit's lifespan up to three times longer than unprotected systems. With ultra-low NOx emissions, these water heaters comply with stringent air quality standards, making them an eco-friendly choice for your home. Engineered for ultimate flexibility, the ADAPT™ SC water heaters are suitable for both indoor and outdoor installations, with optional venting kits available for outdoor setups. Their compact design, universal installation options, and the ability to cascade up to 12 units make them ideal for any residential setting. Featuring advanced freeze protection, electronic ignition, and a user-friendly interface, these water heaters are built to simplify your life while ensuring reliable performance.
- ENERGY STAR® certified with a UEF of 0.95
- Powerful performance—Offers maximum flow rates of up to 10.5 GPM and 180,000 BTU/h input for reliable hot water delivery
- Integrated X3® Scale Prevention Technology—Eliminates the need for annual descaling and extends the unit's lifespan up to three times compared to unprotected units
- Ultra-Low NOx emissions—Complies with strict air quality management regulations, including SCAQMD Rule 1146.2, for environmentally friendly operation
- Small footprint means flexible installation options—Supports both indoor and outdoor installations with an optional outdoor vent cap kit
- Advanced freeze protection—Includes internal freeze protection for the heater and optional freeze protection kits for external cartridges
- Allows flexible venting with PVC, CPVC, Polypropylene, or ABS pipes, with runs up to 50 feet using 2" PVC and up to 150 feet using 3” PVC
- Durable Construction—Features a primary copper heat exchanger and secondary stainless steel heat exchanger for long-lasting performance
- Cascade Capability—Enables connection of up to 12 units with a single cable per heater for increased hot water capacity
- Flow Rate5.4 gpmFuel TypeLiquid PropaneHeating Capacity180,000 BTU/hrIndoor / OutdoorIndoor / OutdoorUltra Low NOxYesVent TypePower DirectColorGrayDimensions40-2/5 in H x 17-1/10 in WFlue Diameter2 inManufacturerA. O. Smith CorporationManufacturer #100403298MaterialCopper / Stainless SteelMounting TypeWallNominal Gallon Capacity1 galPressure Rating150 psiSeriesAdaptTemperature Rating100 to 140 Deg FVent MaterialABS, PVC, CPVC and PolypropyleneVoltage Rating120 VWater Connection LocationBottomWater Connection Size3/4 inWeight83 lbs