Free Shipping on Orders Over $200*
  • Takagi Tankless Water Heater TK-110C-NI

    - 140000 BTU - Non-Condensing - Concentric Vent - Natural Gas or Liquid Propane

    Product ID • TK110CNI0000

  • This Product is no longer available through It has either been discontinued, made obsolete, or is no longer available for sale. Please select another product. Please click here to see Replacement Product.


Takagi Tankless Water Heater Non-Condensing with a Concentric Vent and 140,000 BTU in Natural Gas/Liquid Propane - TK-110C-NI. Heater is delivered for Natural Gas but comes with a Propane Conversion Kit if you have LP Gas.

The Takagi TK-110C-NI  is fully modulating, gas fired tankless water heater with sealed combustion and power vented flue.

Supplies hot water to domestic hot water systems (directly or indirectly) and can be used with water storage tanks, recirculation systems, and/or combined domestic & heating applications. This heater complies with Ultra-Low NOx regulations of less than 14 ng/J (<20ppm)

The Takagi Tankless Water Heater can handle up to 1 shower in colder areas and up to 2 showers in warmer areas. Check your ground water tempeatures for your specific output.

Return Policy | Shipping Policy

Manuals & Docs

Technical Specs

Takagi TK-110C-NI Tankless Water Heaters Techs and Specs

  • Power Input
    15,000 to 140,000 BTU
  • Fuel
    Natural Gas or Propane Gas
  • Water Pressure Minimum
    15 PSI
  • Maximum
    150 PSI
  • Gas Connection (Min)
    3/4 Inch Male NPT
  • Water Connection
    3/4 Inch Male NPT
  • Natural Gas Pressure
    5 to 10.5 Inch W.C.
  • Propane Gas Pressure
    8 to 14.0 Inch W.C.
  • Electrical Supply
    120 Volts
  • Weight
    51 lbs
  • Height
    20.5 inches
  • Width
    13.75 inches
  • Depth
    10.5 inches
  • Maximun Water Flow
    6.6 GPM
  • Minimum Flow to Activate
    .5 GPM
  • Flow Rates (50 degree Input Water Assumed)
    60°F rise / 4.0 gallons per minute
  • Flow Rates (50 degree Input Water Assumed)
    55°F rise / 4.2 gallons per minute
  • Flow Rates (50 degree Input Water Assumed)
    50°F rise / 4.5 gallons per minute
  • Flow Rates (50 degree Input Water Assumed)
    40°F rise / 5.9 gallons per minute
  • Exhaust Vent
    Direct vent APNC35 concentric vent system
  • Exhaust Max Length
    43 Feet 4 Elbows Max
  • Ignition
    Electronic Ignition
  • Built-in Freeze Protection
  • Vertical Condensation Drain
    Install per local code
  • Easy-Link
    up to 4 units
  • Multi-Link
    up to 20 units
  • Warranty
    15 Year Heat Exchanger Residential - 5 Years Parts

Info & Links