The T-H2S model is available in either Direct Vent (only) or Outdoor (only) models. Takagi's T-H2S is one of the most energy efficient tankless units (up to 0.90 EF) in the Tankless industry. The T-H2S was designed for residential applications.
High efficiency, condensing model
Low emission, low Nox
Air-fuel Ration (AFR) sensor
Exhaust and water temperature safety control
Overheat cutoff fuse