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

by Takagi
| 7 answered questions

List Price: $1,468.00
Price: $749.25 & FREE Shipping. Details
You Save: $718.75 (49%)
Only 2 left in stock (more on the way).
Ships from and sold by Amazon.com.
  • Indoor installation only; Direct-vent conversion optional
  • 11,000 - 190,000 BTU/hr
  • 0.82 energy factor
  • 8.0 GPM max flow rate
  • Exhaust and water temperature safety control
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Frequently Bought Together

Takagi T-K4-IN-NG Indoor Tankless Water Heater, Natural Gas + Webstone 44443WPR 3/4-Inch IPS Isolator EXP E2 Tankless Water Heater Service Valve Kit with Clean Brass Construction + Takagi T-KJr2-IN-NG Indoor Tankless Water Heater, Natural Gas
Price for all three: $1,403.08

These items are shipped from and sold by different sellers.

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Product Information

Color: White
Technical Details
Part Number T-K4-IN NG
Item Weight43 pounds
Product Dimensions8.5 x 13.8 x 20.5 inches
Item model numberT-K4-IN-NG
Size-1
ColorWhite
FinishWhite
Item Package Quantity1
CertificationEnergy Star
Warranty DescriptionResidential: 12 year heat exchanger, 5 year parts and 1 year labor. Note: Water heaters of any type must be installed by licensed personnel or warranty will be void.
  
Additional Information
ASINB0057X221K
Best Sellers Rank #56,676 in Home Improvement (See top 100)
Shipping Weight42.8 pounds (View shipping rates and policies)
ShippingThis item is also available for shipping to select countries outside the U.S.
Shipping Advisory:This item must be shipped separately from other items in your order. Additional shipping charges will not apply.
Date First AvailableSeptember 13, 2010
  
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Product Description

Color: White

From the Manufacturer

The all new T-K4 models have an impressive max GPM of 8.0 GPM. This Tankless Water Heater adds 1 more shower over the Takagi T-KJr2 at minimal increase in cost and is perfect for domestic hot water as well as hydronic/radiant heating applications in mid size residential homes or apartments with 2-3 bathrooms.

Product Description

8.0 GPM Natural Gas Indoor Tankless Water Heater The all new T-K4 models have an impressive max GPM of 8.0GPM! Cost-efficient and environmentally friendly, the T-K4-IN can be installed indoor with an optional Direct Vent kit. This tankless water heater is a powerful unit with gas inputs up to 190,000 BTU per hour. Since there is no tank to fill, there is no end to your supply of hot water. Depending on the model, Takagi Tankless water heaters deliver between 200 gallons and 500 gallons of hot water every hour on demand. Tankless systems guarantee that an endless supply of water is available to residences, commercial spaces or anywhere a constant source of hot water is needed. Features: Capacity 2-3 Showers (Depending on climate) Gas Fired Tankless Water Heater Indoor Installation Only Safety Features: Air-Fuel Ratio Sensor (AFR), Exhaust and Water Temperature Safety Control, and Overheat Cutoff Fuse Internal Freeze Protection System Manual reset switch Power Cord Included Specifications: Min 11,000 BTU/h Max 190,000 BTU/h Energy Factor - 0.82 Dimensions - H 20.3" x W 13.8" x D 8.5" Weight - 38 lbs Clearance- Top: 36", Bottom: 12", Front: 24", Back: 1", Sides: 2 " Venting: Horizontal or Vertical Installation Electric Ignition Flu 4" O.D. - Category III Stainless Steel Only Intake 3" O.D. (ABS, PVC, Galvanized Steel, Corrugated Stainless Steel, Category III/IV Stainless Steel 50" Max Length 5 Elbow MAX (90 degree Elbow = 5' length) Accessories:  TK-RE02 - Temperature Remote Control (Included) TK-PC01 (9007671005)- Pipe Cover 9007674005 - Heater Recess Box 9007996005 - Backflow Preventer & F-F Adapter 9007667005 - Direct Vent Conversion Kit 9007605005 - Isolation Valve Kit   Why choose Takagi? Takagi produce some of the most highly efficient tankless water heaters in the industry

Customer Questions & Answers

Customer Reviews

3.3 out of 5 stars
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See all 12 customer reviews
Great product, absolute pleasure to own.
Joe Voje
The Takagi tankless water heater is a great product.
Roxanne Miller
I doubt the idiot ever did anything to it.
ltl

Most Helpful Customer Reviews

17 of 18 people found the following review helpful By UltraHandy on November 20, 2013
Color Name: White
When it worked, it was fine. But the maintenance on these things and the WORST CUSTOMER SUPPORT EVER with guys with the heaviest unintelligible accents ever, who refuse to honor a single darned iota of the warranty makes this an unmitigated disaster and piece of garbage. I cannot stress this enough: AVOID AVOID AVOID.

I have installed about a dozen of these over the years, and only had two work properly for more than five years. And when they break, they are never ever fixable. It's rip off the old one and put in a new one, but Takagi constant changes its inlet/outlet configurations, so there's about about grand in plumbing costs right there.

I have several rental properties, and I installed a few Rheem units when I was low on cash because I got a close-out deal, and I thought those would be lousy, a short term solution. But over ten years later, they have been absolutely trouble free. Only one had an issue, and the warranty came through and they replaced it at their cost. I thought Rheem was supposed to be the bad US model, but it turned out very differently.

Do I need to come to your house right now and pour you a beer and talk you out of it? I should, because that's how awful Takagi has been to deal with. I love Japanese food, Japanese design, and Japanese people, but not this piece of Japanese trash or their lousy Japanese warranty people who live in California and refuse to take an English class so they can communicate to customers. All they know how to say is "no" and that's not okay.
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16 of 18 people found the following review helpful By ltl on March 28, 2013
Color Name: White
These Takagi water heaters are nothing but a big pile of s***. I've had 2 of these so far in a rental house that I am a partner in. Each one lasted about a year and a half and started having problems with each unit after about 1 year, these were both brand new units I am talking about here. I called Takagi's "authorized" technician for my area when I had problems with unit #1. This so called "technician" knew nothing about these things or how to fix one. He suggested pulling out the circuit board and sending it back to the factory for repair. He said I would get it back "good as new" in about 3 weeks. Keep in mind that this is a rental house with a family living in it. I had no choice except to have the unit replaced with a new Takagi unit at a cost of around $1200. I thought the problems were solved.

Almost exactly one year later, the tennants call to say they are having problems with unit #2. I called a different "authorized technician" this time. He informed me that the unit just needed to be "descaled" and it would be fine. This descaling process also included a flush kit installed on the unit for $500. I did not have much confidence in this unit, but hoped it was fixed. About 3 months later I get a call from the tenants again stating that the hot water heater was not working again and had never really worked since the descaling process. I called the "technician" that had installed the unit and descaled it back again. He sent me a bill for $180.00 and claimed it was "fixed". I doubt the idiot ever did anything to it. Sure enough the tenants called the next day to inform me that it was not working. I was pissed.

I called another plumbing company and had them replace the unit again - this time with another brand of water heater.
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6 of 6 people found the following review helpful By Joe Voje on August 25, 2012
Color Name: White
I've had my T-K4-IN NG for over a year (installed May of 2011). It has met all of my expectations. Endless hot water for a household of 6. It replaced an older electric tank hot water heater that failed in spectacular fashion (gallons of water all over the floor). I like the fact that I do not have to worry about being the last one in the shower, or staying too long in the shower if there are others waiting to get in right after me. Great product, absolute pleasure to own.
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11 of 15 people found the following review helpful By Lori on July 29, 2011
Color Name: White
We bought the TK4 in March (new home owner) and the high limit (heat) bypass switch failed yesterday (end of July). Warranty, right? Takagi only pays for parts. We're out close to $400 because we had to pay labor costs for someone to come out and figure out the problem and then come back to install the switch after Takagi ships it. It's great deal for plumbers but not for homeowners. We're very disappointed.
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4 of 5 people found the following review helpful By Pelly42 on May 27, 2013
Color Name: White Verified Purchase
We purchased this water heater in December, 2012 and had it installed. As of March, 2013 we have lost hot water 11 times. We had the gas meter in our home made bigger twice by the gas company since one theory was that more gas was needed to fuel it. This was unsuccessful. We had a more expensive vent installed from the crawl space where the hot water is installed to the outside, this was unsuccessful. We have had local professionals interface with Takagi to troubleshoot the problem and it has always failed again.

Our home is 2000 sq ft and we live in Tennessee. The current theory being offered is that this size hot water heater works fine in FL or other states much farther south where the water does not need to be heated as much to reach the desired point (in this case, 117 degrees), but that we need a bigger one for our home. While we learned from our plumber how to reset the unit and make it work again, this would necessitate a trip to the crawl space (entrance on the exterior of the house) whenever the hot water went out - late at night, freezing cold out, etc. There is never a good time when you have an infant to go into a crawlspace and reset an electronic device.

In reviewing the return policy for this item, it is not nearly as generous as other smaller items we have purchased. It is not returnable for a full refund past about 6 weeks after purchase, and I would need to pay return shipping. We have invested hundreds of dollars to have this installed. While we are within 6 months of purchase and Takagi therefore is paying for the labor on these troubleshooting calls, we will have to figure out what to do with this $800 item that is not working and then spend the money to purchase a larger machine and have it installed. Needless to say, we are not happy.
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