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  • Takagi T-K4-IN-NG Natural Gas Indoor Tankless Water Heater

    Brand & Part #: Takagi T-K4-IN-NG SKU #: taktk4inng

    UPC #: 671657108250

    Availability :  Available to Order

     Delivery in 2-3 Weeks

    Free Shipping!

    Regular Price: Was: $1,230.00


    You Save $512.11 (42%)

    Manufacturer Info

    See All Takagi Products

    Additional Documents

    Product Specifications

    Helpful Information



    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  


    • 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: 5.0" W.C. / Max 10.5" 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
    Fuel Type: Natural Gas
    Installation Type: Indoor Only

    Direct Vent Convertible
    Energy Factor: 0.82
    Vent Size: 4"
    Vent Type: Category III Stainless Steel
    Inlet Gas Pressure: 5.0-10.5"W.C.
    Manifold Pressure: 2.0-2.5"W.C.
    Energy Star Rated: Yes
    Warranty: 12 Year Ltd. Warranty on Heat Exchanger/ 5 Year on Parts
    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

    Additional Info

    Additional Info

    MPN T-K4-IN-NG
    Brands Takagi
    Install Location Indoor
    Fuel Type Natural Gas
    GPM (Flow Rate) 8.00
    BTU Input 175,000 - 200,000
    Availability Can be Ordered


    Customer Reviews (6)

    Not yet installedReview by Frazymans
    Great price and purchase process. Arrived quickly. Have not yet had it installed but based on reviews of this product on other sites I am looking forward to using it. Plus I will get a rebate from my gas company for the energy efficiency rating.We had a boiler in the UK and I much prefer these to tank water heaters. (Posted on 8/4/2015)
    Great Product, Excellent Service!Review by Ronnieg
    Very pleased with tankless system. Water heater works beautifully, is compact. and Home Perfect promptly delivered the unit. (Posted on 3/15/2014)
    four starsReview by R. Jones
    Great customer service. Shipping was free an quick. Enjoyed reduced price. Enjoying product. (Posted on 10/10/2013)
    Water heaterReview by Money pit house
    The customer service was great! I love that I called and spoke with a person and not an automated system. My questions were answered and the purchase was easy. The water heater was delivered quickly and without any hassle. We love out tankless water heater:) (Posted on 5/29/2013)
    endless hotwater if sized rightReview by steve
    great product endless hotwater easy to install and quiet. venting could get expensive (Posted on 1/25/2013)
    Quality purchaseReview by Rass
    High quality item; fast delivery (Posted on 5/22/2012)
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