A.O Smith Residential Tankless Gas Water Heaters Save Energy, Space, and Money.
AO Smith Gas Tankless Water Heaters are made with ASME construction to provide long lasting durability. Fully modulating, non-condensing gas tankless water heaters feature a sealed combustion and power vented flue. Units supply hot water to domestic hot water systems, which can be used with storage tanks, recirculation systems, hydronic heating systems, radiant floor heating systems, and/or combined domestic & heating applications. Heaters only activate when hot water is being used to provide efficient heating and steady flow of hot water. Compact design saves space. Air-Fuel Ratio (AFR) Sensor maintains proper combustion at all times, adjusts fan motor speed to ensure proper air/fuel ratio, and minimize emissions to provide safety and efficiency. Freeze Protection protects heaters when installed in sub-freezing conditions preventing freeze damage. Hi-Limit Switch ensures that water temperatures do not exceed unsafe levels. Overheat Cutoff Fuse ensures that there are no breaches in combustion. Indoor or outdoor use. Fuel types are Natural Gas or Propane. BTU/HR input ranges from 120K Max/15K per minute to 199K Max/15K per minute. Condensing and non-condensing units meet Energy Star requirements. For indoor or outdoor use.