Product Search

Clear Search

Pullout Faucets
Best Selling Faucets, Sinks, Showers and Commercial Plumbing Supplies Popular Faucets Kohler Kitchen and Bathroom Faucets Moen Kitchen and Bathroom Faucets Delta Kitchen and Bathroom Faucets Popular Categories Kitchen Pullout Faucets Stainless Steel Sinks Bathroom Fans Tankless Water Heaters Toilet Seats and Washlets

Takagi T-K4U-IN-NG (Indoor) Natural Gas Tankless Water Heater

Takagi T-K4U-IN-NG (Indoor) Natural Gas Tankless Water Heater

+ Enlarge Image

T-K4U-IN-NG Takagi (Indoor) Natural Gas Tankless Water Heater

Ultra-Low NOx Residential Gas Water Heater. Fully modulating, gas fired, tankless water heater with sealed combustion and power vented flue. Indoor and outdoor models available for residential applications. Supplies hot water to domestic hot water systems (directly or indirectly) can be used with water storage tanks, recirculation systems, hydronic heating systems, radiant floor heating systems, and/or combined domestic & heating applications.


  • Complies with Ultra-Low NOx Regulations
  • Primary Heat Exchanger- stronger than standard copper and more resilient against erosion
  • Indoor models include both a remote control and power cord as standard features
  • Complies with Lead Free Standards
  • Energy Star Qualified
  • Overheat Cutoff Fuse and Built-in Freeze Protection
  • Efficient, Durable and Easy to Install
  • Includes Built-in Temperature Controller and Diagnostics
  • 3 or 4 Inch Venting
  • Up to 8 Gallons Per Minute


  • Natural Gas Input: Min. 15,000Btu -Max. 190,000Btu
  • Gas Connection: 3/4" NPT
  • Water Connection: 3/4" NPT
  • Natural Gas Pressure Inlet: Min. 5.0" W.C. -Max. 10.5" W.C.
  • Dimensions: 20-1/2" x 13-4/5" x 8-1/2"
  • Ignition: Electronic Ignition AC 120V (60 Hz)
  • Water Pressure: Min. 15 psi -Max. 150psi
  • Natural Manifold Pressure: 2.0 - 2.5" W.C.

T-K4U-IN-NG Reviews - Submit a Review
See more of what Takagi has to offer...