Enjoy Continuous Flow: This heater allows a flow rate up to 8.0 GPM while X3 Scale Prevention Technology prevents scale buildup and maintains like-new performance longer. No annual descaling or isolation valves required. Lower Your Energy Cost: Using our high-efficiency tankless water heater with up to .81 Uniform Energy Factor (UEF). Includes integrated temperature controls and advanced diagnostics for easy operation. 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. 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. Space Efficient Design: Wall-mount saves valuable space and allows for additional storage and flexibility. Direct vent APNC35 concentric vent system, Vertical or Horizontal Vent Termination Installation. Convertible from natural gas to propane with included kit. ๐. ๐ข. ๐ฆ๐บ๐ถ๐๐ต ๐ง๐ฎ๐ป๐ธ๐น๐ฒ๐๐ ๐ช๐ฎ๐๐ฒ๐ฟ ๐๐ฒ๐ฎ๐๐ฒ๐ฟ ๐ญ๐ต๐ฌ,๐ฌ๐ฌ๐ฌ ๐๐ง๐จ ๐ฃ๐ฟ๐ผ๐๐ถ๐ป๐ฒ ๐ซ๐ ๐๐ผ๐ป๐ฐ๐ฒ๐ป๐๐ฟ๐ถ๐ฐ ๐ฉ๐ฒ๐ป๐ ๐๐ป๐ฑ๐ผ๐ผ๐ฟ ๐ก๐ผ๐ป-๐๐ผ๐ป๐ฑ๐ฒ๐ป๐๐ถ๐ป๐ด ๐ก๐ฎ๐๐๐ฟ๐ฎ๐น ๐๐ฎ๐ ๐๐ถ๐๐ต ๐ซ๐ฏ ๐ฆ๐ฐ๐ฎ๐น๐ฒ ๐ฃ๐ฟ๐ฒ๐๐ฒ๐ป๐๐ถ๐ผ๐ป ๐ง๐ฒ๐ฐ๐ต๐ป๐ผ๐น๐ผ๐ด๐ ๐๐ป๐ท๐ผ๐ ๐๐ผ๐ป๐๐ถ๐ป๐๐ผ๐๐ ๐๐น๐ผ๐: This heater allows a flow rate up to 8.0 GPM while X3 Scale Prevention Technology prevents scale buildup and maintains like-new performance longer. No annual descaling or isolation valves required. ๐๐ผ๐๐ฒ๐ฟ ๐ฌ๐ผ๐๐ฟ ๐๐ป๐ฒ๐ฟ๐ด๐ ๐๐ผ๐๐: Using our high-efficiency tankless water heater with up to .81 Uniform Energy Factor (UEF). Includes integrated temperature controls and advanced diagnostics for easy operation. ๐ฆ๐๐ฎ๐ฏ๐น๐ฒ ๐๐ฎ๐๐ฒ๐ฟ ๐ง๐ฒ๐บ๐ฝ๐ฒ๐ฟ๐ฎ๐๐๐ฟ๐ฒ๐: 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. ๐ฆ๐ฎ๐ณ๐ฒ ๐๐ผ๐ฟ ๐ฌ๐ผ๐๐ฟ ๐๐ผ๐บ๐ฒ: 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. ๐ฆ๐ฝ๐ฎ๐ฐ๐ฒ ๐๐ณ๐ณ๐ถ๐ฐ๐ถ๐ฒ๐ป๐ ๐๐ฒ๐๐ถ๐ด๐ป: Wall-mount design saves valuable space and allows for additional storage and flexibility. Direct vent APNC35 concentric vent system, Vertical or Horizontal Vent Termination Installation. Convertible from natural gas to propane with included kit.