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Takagi T-K4 Tankless Water Heater

Takagi T-K4

Regular Price: $1,230.00

Special Price $891.14

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Regular Price: $1,230.00

Special Price $891.14

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Takagi T-K4 Tankless Water Heater TK4
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  • Product Manual

Released in 2010, the T-K4 improves upon many of the features from the T-K3. The T-K4 is one of Takagi's smaller tankless water heaters. At 13.8 inches wide and weighing only 38 pounds, its ultra-compact design allows it to be mounted on a wall.

Takagi's newest tankless water heater also features an energy factor of 0.82, so it is extremely efficient and environmentally friendly. Since tankless water heaters only burn gas when hot water is needed, installing this unit can help homeowners save up to 45% on their monthly gas bills.


  • Capacity: 2 to 3 Bathrooms
  • Flow Rate: Maximum 8.0 GPM
  • Gas Inputs: 11,000 to 190,000 BTU per hour
  • Energy Factor Rating: 0.82
  • Inlet Gas Pressure: Min: 8.0" W.C. / Max 14.0" W.C.
  • Dimensions: 20.3" H x 13.8" W x 8.5" D
  • Direct Vent Capability
  • Electric Ignition



Application: 2-3 Showers
Product Type: Tankless Heater
Energy Factor: 0.82
Vent Size: 4"
Vent Type: Category III Stainless Steel
Inlet Gas Pressure: 8.0"-14.0"W.C.
Warranty: 12 Year Ltd. Warranty on Heat Exchanger/ 5 Year on Parts
Energy Star Rated: Yes
Height: 20.3"
Width: 13.8"
Depth (Inches): 8.5"
Max Flow (GPM): 8
Voltage: 120v
Gas Input: 11000-190000 BTU/h
Water Connection: 3/4"
Gas Connection: 3/4"
Temperature Range (F): 99°-167°F
PSI Range: 15-150 psi
Weight (lbs): 38 lbs
Manufacturer Takagi
Water Heater Type Tankless Water Heater
BTU Input 190,000.00
Height 20.30
Specification Sheet for Takagi Installation Manual for Takagi
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Where can I order the Category 111 stainless steel vent kit?
I have a 10 year old T-M1 that has gone bad. Need to replace.
Single family home with 2 bathrooms. I think the M1 may have been overkill in terms of capacity.
What do you recommend? T-K4?
does this unit include the remote temperature controller?