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The T-H2S is one of Takagi's greenest models and features an average efficiency of 90% with natural gas (estimated). The T-H2S can provide at least two showers worth of water simultaneously along with one appliance at input temperature of 60ºF or greater. This state-of-the-art tankless water heater uses not one, but two heat exchangers to maximize the unit?s energy efficiency, resulting in the higher-than-average efficiencies stated above.
  • Natural Gas Input: (Min.) 13,000BTU
  • Natural Gas Input: (Max.) 180,000BTU
  • Gas Connection: 3/4" NPT
  • Water Connection: 3/4" NPT
  • Condensate Water Drain: 1/2" NPT
  • Dimensions: 25.6" x 18.5" x 12.4"
  • gnition: Electronic Ignition
  • Electrical Supply: AC 120V (60 Hz)

    Why choose Takagi Tankless Water Heaters? Takagi produces some of the most highly efficient tankless water heaters in the industry. They are commited to innovation and quality and are constantly creating new technology to keep up with their customers? ever-changing hot water needs. Takagi sets the bar with the most stringent of durability testing standards for all of our models. For 15 years, Takagi has provided the most eco-friendly, energy-efficient water heating solutions in North America.
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    Manuals (1)

    3-4 Showers

    Product Type:

    Tankless Heater

    Fuel Type:

    Natural Gas

    Installation Type:

    Indoor Only

    Direct Vent Only

    Energy Factor:


    Inlet Gas Pressure:


    Manifold Pressure:


    Weight (lbs):

    73 lbs





    Depth (Inches):


    Max Flow (GPM):




    Gas Input:

    13000-180000 BTU/h

    Water Connection:


    Gas Connection:


    Temperature Range (F):

    100°F to 185°F

    PSI Range:

    15-150 psi


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