Takagi T-K4 Indoor/Outdoor Propane/NG Tankless Water Heater


Weight: 40.00 lbs

Gas Type:
Rush Order:

Takagi T-T-KJr2 Indoor/Outdoor Propane/NG Tankless Water Heater

This efficient and compact tankless water heater is the perfect hot water solution for your home.

The Takagi T-K4 is a gas fired, fully modulating, compact tankless water heater ideal for residential applications. With a heat output of 190,000 BTU, the T-K4 produces enough hot water for three bathrooms in areas with a warm climate.

The T-K4 directly or indirectly provides hot water to residential hot water systems through an indoor or outdoor installation. It can be used with storage tanks, hydronic heating systems, recirculation systems, radiant floor systems, and domestic heating applications.


  •  Energy Factor of 0.82 for LPG and  NG
  •  Max flow rate of 8.0 GPM at 35°F temp rise (4.4 GPM at 70°F rise)
  •  ENERGY STAR® qualified
  •  Venting with Category III stainless steel
  •  Indoor model includes power cord
  •  Both models come with a remote control
  •  Safety features include overheat, freeze, surge protection, and diagnostic codes for troubleshooting


Natural Gas Input   Min. 11,000 Btu    Max. 190,000 Btu 
LPG Input   Min. 11,000 Btu    Max. 190,000 Btu  
Gas Connection   3/4" NPT     
Water Connection   3/4" NPT     
Natural Gas Pressure Inlet   Min. 5.0" W.C.   Max. 10.5" W.C. 
LP Gas Pressure Inlet   Min. 8.0" W.C.   Max. 14.0" W.C.  
Weight   38 lbs    
Dimensions   20.5" x 13.8" x 8.5"     
Ignition   Electronic Ignition     
Electrical Supply   AC 120V (60 Hz)    
Water Pressure   Min. 15 psi    Max. 150 psi  
Natural Manifold Pressure  2.0-2.5" W.C.    
LP Manifold Pressure  3.7-4.0" W.C.     


Specification Sheet Download

Installation Manual and Owner’s Guide Download

Alternate item numbers: Takagi TK4, TK-4

Related Gadgets

No reviews exist


Type the characters you see in the picture...

The code is case-sensitive and must be entered exactly as above.

Share Takagi T-K4 Indoor/Outdoor Propane/NG Tankless Water Heater