Takagi TK-310U-I Indoor Tankless Water Heater, Natural/Propane Gas Convertible, 190KBTU


Brand: Takagi

Mfr Part#: TK-310U-I

Usually ships: within 5-7 business days
Qty Price
$779.95 / each & Free Shipping
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Takagi TK-310U-I model is a non-condensing indoor natural gas (convertible to propane w/ kit included) tankless water heater, intended for small to medium residential applications.


  • Ultra-Low NOx;
  • Field convertible from natural gas to propane (kit included);
  • Factory-installed power cord with plug;
  • Temperature controller on front panel;
  • Built-in freeze protection;
  • Manual Reset Hi Limit (up to 194°F);
  • Overheat cutoff fuse;
  • Inlet and outlet thermistors for constant temperature monitoring;
  • Air/Fuel ratio rod;
  • Flame sensor;
  • Electronic ignition - no standing pilot;
  • Complies with SCAQMD Rule 1146.2 (California & Texas);
  • Complies with lead free standards;
  • AHRI certified.

Technical Specifications:

  • Shower capacity at 70F (warm climates): 3.5 showers;
  • Shower capacity at 50F (cooler climates): 2.5 showers;
  • Fuel Type: Natural Gas (Propane conversion kit is included);
  • Gas Connections: 3/4" NPT;
  • Gas Consumption Input: 15,000-190,000 BTU/H;
  • Inlet Gas Pressure: 4.0-10.5" in W.C. (for Natural Gas); 8.0-14.0" in W.C. (for Propane);
  • UEF: 0.82;
  • Hot/Cold Connections: 3/4" NPT;
  • Water Connection Locations: Bottom;
  • Max GPM: 8;
  • Water Pressure: 15-150 PSI;
  • Weight: 39 lbs;
  • LEED Rating: 0.0;
  • Emissions: less than 14 ng/J;
  • Flue/Exhaust: 4" (Category III Stainless Steel);
  • Air Intake: 3" Cat. III Stainless, Flex. Aluminum, PVC or ABS;
  • Vent: 60' Max Length, 6 elbows max;
  • Max. Elevation: 10,100 ft;
  • Power Source: 120V/60Hz.


15-year limited warranty on heat exchanger in residential applications/5-year limited warranty on heat exchanger in commercial applications/5-year limited warranty on all parts
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