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  • Takagi Condensing Indoor Tankless Water Heater Natural Gas - T-H3M-IN-N

    - 120000 BTU - Indoor Installation - 93% Energy Factor

    Product ID • TH3MINN00000

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The Takagi T-H3M-DV-N Indoor Installed Natural Gas Condensing Tankless Water Heater for smaller spaces. This Takagi T-H3M-DV-N also uses existing 1/2 Inch gas supply lines (Or larger depending on you installation) and inexpensive PVC venting to lower installation costs.

The Takagi T-H3M-DV-N supplies hot water to domestic hot water systems (directly or indirectly) which can be used with storage tanks, recirculation systems, hydronic heating systems, radiant floor systems, and/or domestic & heating applications.

The T-H3M-DV-N is a high efficient, condensing tankless water heater perfect for residential applications. With gas inputs of 120,000 BTU, the Takagi T-H3M can produce enough hot water for two bathrooms in warmer climates or 1.5 baths in colder climates. You need to check your water tempeature to be sure of the output of the water heater.

Copper Primary Heat Exchanger and Secondary Heat Exchanger is made of Marine Grade Type 316L
Stainless Steel to protect against corrosion.

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Technical Specs

Takagi Condensing GasTankless Water Heater T-H3M-IN-N Techs and Specs

  • Installation Type
    Indoor Only
  • Natural Gas Input
    Min. 15,000Btu - Max. 120,000Btu
  • Built-in Temperature
  • Gas Connection
    3/4 inch NPT
  • Water Connection
    1/2 inch NPT
  • Natural Gas Pressure Inlet
    Min 5.0 W.C.
  • Natural Gas Pressure Inlet
    Max 10.5 W.C.
  • Ignition
    Electronic ignition
  • Electrical Supply
    AC 120C (60 Hz)
  • Water Pressure
    Min. 15 psi - Max. 150 psi
  • Height
    22 7/8 Inches
  • Width
    13 7/8 Inches
  • Depth
    10 13/16 Inches
  • Weight
    44 lbs
  • Max Flow (GPM)
  • Fuel Type
    Natural Gas
  • Vent Type
    PVC, CPVC, CAT III Venting
  • Application
    1 to 2 Showers

Takagi Condensing Indoor Tankless Water Heater T-H3M-IN-N Features

  • Maximum flow rate of 6.6 GPM at 35 Degree F temperature rise (4.3 GPM at 70 Degree F rise)
  • Energy Factor of 0.93 for NG
  • Primary heat exchanger utilizes copper alloy
  • Secondary heat exchanger utilizes 316L stainless steel for better corrosion resistance
  • ENERGY STARĀ® 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
  • Outdoor model includes remote control as standard feature
  • Safety features include freeze, overheat, surge protection, and troubleshooting diagnostic codes
  • 40 psi or above is recommended for maximum flow
  • 15-year limited warranty on heat exchanger in residential applications
  • 10-year limited warranty on heat exchanger in commercial applications
  • 5-year limited warranty on all parts

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