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Takagi T-H3S-DV-NG Indoor Tankless Water Heater 180,000 BTU Natural Gas

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Takagi T-H3S-DV-NG Indoor Tankless Water Heater 180,000 BTU Natural Gas

T-H3S-DV-NG Takagi Indoor Tankless Water Heater 180,000 BTU Natural Gas 
The T-H3S is a high efficient, condensing, tankless water heater perfect for residential applications. With gas inputs of 180,000 BTU, the T-H3S can produce enough hot water for three bathrooms in warmer climates or two baths in colder climates.


  • Maximum flow rate of 8.0 GPM at 35°F temperature rise (4.9 GPM at 70°F rise)
  • Energy Factor of 0.95 for NG and LPG
  • Primary heat exchanger utilizes HRS35 commercial-grade copper alloy for 25 times better heat transfer than stainless steel
  • Secondary heat exchanger utilizes 316L stainless steel for better corrosion resistance
  • ENERGY STAR qualified
  • Complies with Ultra-Low NOx regulations of less than 14 ng/J (<20ppm)
  • Indoor model has integrated controls and power cord as standard features
  • Venting with Schedule 40 PVC, CPVC, PP, Category III stainless steel
  • Safety features include freeze, overheat, surge protection, and troubleshooting diagnostic codes


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