A. O. Smith Tankless Water Heater Natural Gas - On Demand Hot Water - 10 GPM - Outdoor 199,000 BTU Condensing - ProLine® XE ATO-540H-N
Product details
| Management number | 210147427 | Release Date | 2026/04/02 | List Price | $640.00 | Model Number | 210147427 | ||
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A. O. Smith Corporation is one of the world's leading manufacturers of residential and commercial water heaters and boilers, offering a comprehensive product line featuring the best-known brands in North America, China, India, Vietnam and Europe. Customers look to A. O. Smith for innovative solutions to their water heating needs, a reputation we have enjoyed for nearly 80 years. Today we “deliver the world’s hot water” to residential and commercial customers in more than 60 countries, offering some of the best-known and widely respected brands in the industry. Brands deliver long-lasting, reliable service with the features our customers value. We also offer the broadest range of high-efficiency water heating products that save energy... and save our customers money.
- Reduce energy usage and enjoy endless hot water with the Energy Star, condensing Outdoor Natural Gas 540H tankless water heater. Delivers up to .94 Uniform Energy Factor (UEF) and a Continuous flow rate up to 10.0 GPM.
- Provides a variety of installation options: outdoor and direct vent. Flexible power direct vent design allows for venting up to 100 feet using either PVC, CPVC, polypropylene or ABS Pipe (solid core). Includes a wall mount temperature remote controller and advanced diagnostics.
- Safe For Your Home: This tankless water heater comes with exhaust & water temperature safety control, overheat cut-off fuse and air-fuel ratio (AFR) sensor. Professional installation recommended. Contact A. O. Smith support at (800) 527-1953.
- The ATO-540H-N tankless water heater uses extremely efficient condensing technology to deliver an endless supply of hot water for a 3 bath home in northern climates and up to a 4 bath home in southern climates (one shower head per bath). Maximum of 199,000 BTU/hr of natural gas.
- Stable Water Temperature: The commercial-grade copper heat exchanger in the AO Smith tankless water heater provides 25x better heat transfer compared to steel. 15-year limited warranty on heat exchanger in residential applications.
| UPC | 671657140953 |
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| Color | White |
| Voltage | 120 Volts |
| Capacity | 10 Gallons |
| Flow Rate | 10 Gallons Per Minute |
| Brand Name | A. O. Smith |
| Efficiency | High Efficiency |
| Item Depth | 11.25 |
| Mount Type | Wall |
| Style Name | Outdoor Natural Gas 540H |
| Heat Output | 199000 British Thermal Units |
| Is Electric | No |
| Item Weight | 59 Pounds |
| Manufacturer | A. O. Smith |
| Model Number | ATO-540H-N 100 |
| Power Source | Natural Gas |
| Material Type | Copper Heat Exchanger |
| Item Type Name | water-heaters |
| Maximum Pressure | 150 Pound per Square Inch |
| Special Features | ENERGY STAR® certified, Overheat Protection |
| Included Components | Product Only |
| Maximum Temperature | 122 Degrees Fahrenheit |
| Item Dimensions W x H | 17.75"W x 23.63"H |
| Manufacturer Part Number | ATO-540H-N |
| Manufacturer Warranty Description | 15 Years Heat Exchanger / 5 Years Parts Warranty |
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