140,000 BTU ATI-110 Non-Condensing Ultra-Low NOx Indoor Tankless Water Heater (NG/LP)

The 110U Series is great for apartments, one bath homes in cold climates, condos and summer cabins. The design allows for a variety of installation options. Complies with Ultra-Low NOx regulations and meets energy efficiency requirements of ASHRAE 90.1b-1992. The ATI-110U tankless water heater uses up to 140,000 BTU/h of natural gas/liquid propane to deliver an endless supply of hot water for a 1.5 bath home in northern climates and up to a 2.5 bath home in southern climates (one shower head per bath). The ATI-110U has a Uniform Energy Factor of 0.81. With an industry leading 15-year limited warranty, the ATI-110U tankless water heater provides years of hot water through innovation and quality. A. O. Smith's ProLine water heaters are residential products built to commercial-grade standards and are only available for purchase through professional wholesalers and contractors.

• Continuous flow rate up to 3.5 GPM
• Wall-mount design saves valuable space and allows for additional storage and flexibility
• Commercial-grade copper heat exchanger is 25x better than stainless steel at heat transfer, stabilizing outgoing water temperatures quicker
• Easily convertible from natural gas to propane with supplied kit
• Highly efficient condensing Ultra-Low Nox tankless water heater delivers up to .81 Uniform Energy Factor (UEF)
• Vents up to 60 feet using 4" Category III Stainless Steel
• Includes integrated temperature controls and advanced diagnostics to simplify troubleshooting
• Safety features include built-in freeze protection, overheat cut-off fuse and air-fuel ratio (AFR) sensor
• 15-year limited warranty on heat exchanger in residential applications