Outdoor Takagi T-KJr2-OS-LP Tankless Water Heater, Propane, 140K BTU

Outdoor Takagi T-KJr2-OS-LP Tankless Water Heater, Propane, 140K BTU

Outdoor Takagi T-KJr2-OS-LP Tankless Water Heater, Propane, 140K BTU QR Code
Product Code: T-KJr2-OS-LP

Availability: In Stock

Weight:38.00 lb

Dimensions (L x W x H ): 17.00 x 14.00 x 28.00

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Takagi T-KJr2-OS-LP Tankless Water Heater is the smallest water heater in the Takagi tankless line with gas inputs up to 140,000 BTU per hour and an energy factor of 0.81-0.83.


Includes TK-RE02 Remote Temperature Controller.


This cost-efficient and environmentally friendly Takagi Tankless Water Heater can support hydronic baseboard or radiant floor heating applications, as well as provide domestic hot water to plumbing fixtures and appliances. Takagi T-KJr2-OS-LP can meet all the hot-water needs of a small American home or apartment with one or two bathrooms.


At an average (rise in temperature) of 60F in warmer areas Takagi T-KJr2-OS-LP Tankless Water Heater will provide 228 GPH (3.8 GPM) and enough hot water for one shower and a lavatory basin at a time; or one low-flow shower (2.5 GPM or less) and an appliance, such as a dishwasher or washing machine, at the same time. In colder areas where the input temperature may be 40F or less you can expect a flow rate of about 174 GPH (2.9 GPM) and running only one major fixture at a time. Please refer to the flow charts for specific rates. The All new Takagi T-KJr2-OS-LP has a max GPM of 6.8GPM.


Takagi Tankless Water Heater T-KJr2-OS has four preset temperatures: 113F, 122F, 131F, 140F.  

To convert the water heater from a standard vent system to a direct‐vent (or sealed combustion) system, use a TK-TV10 Direct‐Vent Conversion Kit. By default (indirect vent), the unit will use the intake air from the room where it is installed.



Fully modulating, gas fired tankless water heater;

Outdoor installation only;

Safety Features:

  • Air-Fuel Ratio (AFR) sensor;
  • Exhaust & Water Temperature Safety Control;
  • Overheat Cutoff Fuse

Internal Freeze-Protection System;

Manual reset high limit switch;



LP Input     Min. 19,500 Btu       Max. 140,000 Btu;

Max Flow Rate     6.6 GPM;

Gas Connection     3/4" NPT; 

Water Connection     3/4" NPT;     

LP Gas Pressure Inlet      Min. 8.0" W.C.       Max. 14.0" W.C.;  

Weight     33 lbs;        

Dimensions      20.5" x 13.8" x 6.7";        

Ignition      Electronic Ignition;        

Electrical Supply      AC 120V (60 Hz) ;       

Water Pressure      Min. 15 psi       Max. 150 psi ; 

LP Manifold Pressure     3.1" W.C.;

Product Specs
Application:1-2 Showers
Depth (Inches):6.7"
Energy Factor:0.82
Energy Star Rated:Yes
Fuel Type:Propane
Gas Connection:3/4"
Gas Input:19500-140000 BTU/h
Inlet Gas Pressure:8.0"-14.0"W.C.
Installation Type:Outdoor Only
Max Flow (GPM):6.6
Product Type:Tankless Heater
PSI Range:15-150 psi
Temperature Range (F):99°-167°F
Water Connection:3/4"
Weight (lbs):33 lbs
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