TK-160X3P - Tankless Water Heater Condensing X3 160,000 BTU Natural Gas/Propane


TK-160X3P (Indoor)

Takagi partnered with A. O. Smith, an expert in water heating and treatment, to combine the two technologies in a product designed to revolutionize tankless water heating. Our new condensing gas tankless line features X3™ Technology to last three times longer than competitive models.

Number of showers this unit can handle, depending on ground water temperature.

Warmer Climates

Cooler Climates


The TK-160X3P combines the technologies of water heating and water treatment. Our new condensing gas tankless line features X3TM Technology to last three times longer than competitive models.

  • 15-year limited heat exchanger, 5 yrs limited parts Residential use
  • X3TM Scale Prevention Technology
  • Convertible from Natural Gas to Liquid Propane
  • Max Flow rate of 6.4 gal/min
  • Complies with Ultra-Low NOx regulations of less than 14 ng/J (<20ppm)
  • Dual Stainless Steel Heat Exchangers
  • Safety features include freeze, overheat, surge protection, and troubleshooting diagnostic codes

TK-X3 Certifications

Tech Specs

Emissions: Ultra-Low NOx
Maximum BTUs: 160,000
Minimum BTUs: 9,000
Water Connection Location: Bottom
Water Connection: 3/4"
Flow Rate: 6.50
Heat Exchanger: Dual Stainless Steel
Voltage: AC 120V
UEF: 0.93
ENERGY STAR® Qualified: Yes
LEED Rating: 0.0
Remote Control: No
Technology: condensing, X3
Multilink: No

Dimensions & Venting

Height: 27.44"
Width: 17.69"
Depth: 11.19"
Product Weight: 80 lbs.
Vent Type: Power Direct Vent
Vent Size: 2"




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