T-KJr2-IN Takagi Tankless Indoor Water Heater (Natural Gas) Zoom

T-KJr2-IN Takagi Tankless Indoor Water Heater (Natural Gas)

SKU:T-KJR2-IN-NG

Brand: Takagi

Takagi
Qty Price
$499.95
/ each
In Stock! Ships in 24-48 Hours
(19 Available)
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Specs

Application: 1-2 Showers
Product Type: Tankless Heater
Installation Type: Indoor Only
Fuel Type: Natural Gas
Energy Factor: 0.82
Vent Size: 4"
Inlet Gas Pressure: 5.0-10.5"W.C.
Manifold Pressure: 2.0-2.5"W.C.
Energy Star Rated: Yes
Venting Requirement: Category III Stainless Steel
Height: 20.3"
Width: 13.8"
Depth (Inches): 6.7"
Max Flow (GPM): 6.6
Voltage:
?
120v
Gas Input: 19500-140000 BTU/h
Water Connection: 3/4"
Gas Connection: 3/4"
Temperature Range (F): 99°-167°F
PSI Range: 15-150 psi
Weight (lbs): 33 lbs

Description for Takagi T-KJR2-IN-NG

Note: Isolation valves are not included but are recommended for installaltion.

Released in 2010, the T-KJr2-IN & T-KJr2-OS are the smallest water heaters in the Takagi tankless line. This small, but powerful unit can meet all the hot-water needs of a small American home or apartment with one or two bathrooms. Designed to virtually do anything a 40-gallon tank-type water heater can do and more, the compact, wall mounted T-K Jr. can support hydronic baseboard or radiant floor heating applications, as well as provide domestic hot water to plumbing fixtures and appliances.

Cost-efficient and environmentally friendly, the T-KJr2-IN can be converted into a direct-vent unit by using the optional TV10 conversion kit for installation in a garage, a utility closet or any confined space in which makeup air may be limited.

Specifications:

  • Capacity: 1 to 2 Bathrooms
  • Flow Rate: Maximum 6.6 GPM
  • Gas Inputs: 19,500 to 140,000 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 6.7" D
  • Direct Vent Capability
  • Electric Ignition


TK-REO2 Remote Control is included:

T-KJr2-IN Takagi Tankless Indoor Water Heater (Natural Gas)

REVIEW SNAPSHOT®

by PowerReviews
T-KJr2-IN Takagi Tankless Indoor Water Heater (Natural Gas)
 
4.8

(based on 41 reviews)

Ratings Distribution

  • 5 Stars

     

    (34)

  • 4 Stars

     

    (6)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

98%

of respondents would recommend this to a friend.

Most Liked Positive Review

 

Used for in floor heat

I'm using this unit to run one zone to heat my 1,000 sqft garage. So far this is awesome! This unit is very quiet and makes 167 degree water effortlessly.
Here are some...Read complete review

I'm using this unit to run one zone to heat my 1,000 sqft garage. So far this is awesome! This unit is very quiet and makes 167 degree water effortlessly.
Here are some technical aspects of my system. I have one zone with three loops of half inch pex tubing (all loops are 300' each) I have a taco 00R-MSF1-IFC multi speed circulation pump With a taco SR501 switching relay. The flow rate of my system is 2.4gpm. With a solid plan of what I needed supply house delivered everything I needed in addition to the Takagi I got all the fittings, expansion tank, air separator, webstone multi valves and venting with no problems.

I should add that the customer at supply house is fantastic as well, my original order I purchased the z-vent 4" w/back flow kit I did end up returning and 100% hassle free.

My venting solution was resolved by buying the concentric termination kit, which I'm glad I did.

VS

Most Liked Negative Review

 

Still getting used to it

I got rid of my conventional HW tank to try this wall pack heater. It took (2) of my qualified technicians 8-hours to install it so if you don't have those resources...Read complete review

I got rid of my conventional HW tank to try this wall pack heater. It took (2) of my qualified technicians 8-hours to install it so if you don't have those resources you may want to rethink it. The gas line had to be upsized from ½" to ¾" and an entire new 4" vent through to the roof line to replace the 3" vent line. That was a lot of work. Now that the tank is gone I don't have my recirculating pump which delivered hot water to my master bath instantly. A recirculating pump doesn't work with this wall pack. This means I waste 5 gallons of water before showering each time because my master bath is so far away from the heater. After being a HW tank guy forever, I guess I just need to get used to this device. As a bonus, I do like the extra room I have in my garage.

Reviewed by 41 customers

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4.0

My eighth machine

By Dr. Dave

from Connecticut

Verified Reviewer

Comments about T-KJr2-IN Takagi Tankless Indoor Water Heater (Natural Gas):

I use these as hydronics loop heaters in three- and four-bedroom apartments (1000-1300 sq. ft) in the Northeast U.S. The installation is straightforward, but you might have to educate your local building official. I use Grundfos 3-speed circulators, as you need a decent flow-rate or the machine won't fire. Watch out for getting dust in the machine during the install (if sheetrock sanding is going on, for instance). Five years, few problems: changed out one or two flow-rate sensors. One shutdown in extreme cold (minus-ten F). Flush the system annually. Remove the filter.

 
5.0

Best tankless system ?

By Builder Petey

from Reno NV

Verified Buyer

Comments about T-KJr2-IN Takagi Tankless Indoor Water Heater (Propane):

Easy to install . Easy to control. Easy to maintain. What else can you ask for ?

 
5.0

Works well. Much better than my 14 year old Bosch

By Bradley

from Baltimore, MD

Verified Buyer

Comments about T-KJr2-IN Takagi Tankless Indoor Water Heater (Natural Gas):

Previously, I had a Bosch instant hot water heater that would often cut out during showers. It would also require you to manually adjust the temperature as the seasons changed.

The new heater works really well. It no longer cuts out for minutes at a time, and the electronic temperature sensor keeps the water at the same temperature all year round.

The only downside is that, because it relies on electricity (for the temperature sensor, controls and ignition), I don't think it will function during a power outage. Although the old Bosch was light on technology, that also meant you could depend on it as long as you had gas to burn.

Overall, I'd highly recommend this heater. We'll have to wait and see how it holds up in the long run.

 
5.0

Great Item

By Frank709

from Sobieski, Wi

Verified Buyer

Comments about T-KJr2-IN Takagi Tankless Indoor Water Heater (Propane):

I have 2 other Tagaki heaters and they work great. The only thing you have to be careful is when it gets below zero you have to provide some heat as the heatrs in the unit does not keep up with cold air coming in tru the exhaust.

 
5.0

Excellent water heater performs well

By Robin

from Riner, VA

Verified Buyer

Comments about T-KJr2-IN Takagi Tankless Indoor Water Heater (Propane):

This unit replaced an old 40 gallon heater. The installation makes a compact, efficient system. I read several reviews which convinced me to order a T-KJR2-IN. I agree with those happy users. I live alone and only occasionally use a lot of hot water. The Takagi unit meets all of my needs easily. Also, it is very quiet. I expected more blower noise.

 
5.0

A very good tankless hot water heater Easy to install

By District Chief

from Jackson, tn

Verified Buyer

Comments about T-KJr2-IN Takagi Tankless Indoor Water Heater (Natural Gas):

We hook water hose to it to clean cookers
Compact and out of way

 
5.0

great product

By Steve

from Atlanta

Verified Buyer

Comments about T-KJr2-IN Takagi Tankless Indoor Water Heater (Natural Gas):

pretty big job to install but worth it. feed it into an existing electric water heater. i now have hot water at any flow rate and heated almost exclusively by gas. excellent product, small, quite, with nice readout on inlet/output temp and flow rate

 
5.0

Great home unit

By Dallas

from Louisiana

Verified Reviewer

Comments about T-KJr2-IN Takagi Tankless Indoor Water Heater (Natural Gas):

Bought one of these for my home and it has worked perfectly. I am adding a bathroom so I am buying another to split the house in 2 sections since we have 5 of us living in the household. I liked the unit so much that im back to purchase another. I bought my first one a year ago and haven't had any issues. I replaced my 50gal gas tank water heater with this one.

 
5.0

great unit

By Handyman76

from Berwick, PA

Verified Buyer

Comments about T-KJr2-IN Takagi Tankless Indoor Water Heater (Propane):

Installed in a mobile home very quiet compact unit endless hot water. very easy set up concentric vent kit was awesome kit. the lady was very happy with the install and extra space. replaced a 55 gallon conventional tank propane unit and this thing puts out more hot water and never runs out.

 
5.0

works better than I thought

By Craig

from Payson az

Verified Buyer

Comments about T-KJr2-IN Takagi Tankless Indoor Water Heater (Propane):

So far it's been great,have not received 1st prop bill yet,but expecting a significant drop,also just did the washer and shower test at same time,flow dropped very slightly but temp stayed at 122, and it's cold outside about 30 today, I like it

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Q&A: Ask the Questions, share answers

Do you have questions about this product?

Get answers from real customers and in-house experts with AnswerBox.

24 Questions | 38 Answers
Displaying questions 1-10Previous | Next »
  • T-KJr2-IN Takagi Tankless Indoor Water Heater (Natural Gas)

    Q:

    Can I vent this product in my venting chimney I only have my heating system venting threw it an the vent flows very well can I vent this tankless threw there as well
    Asked on 8/14/2015 by Quiet Storm

    1 answer

    • CUSTOMER CARE

      A:

      This unit must use category III stainless steel venting. Also, the manual states that you cannot common vent or connect any vent from other appliances to the water heater vent.

      Answered on 8/17/2015 by SupplyHouse Staff from NY
  • T-KJr2-IN Takagi Tankless Indoor Water Heater (Natural Gas)

    Q:

    What type of venting material does this unit need? Does it require type B vent or something different?
    Asked on 5/21/2015 by Maddmonk from Kenmore wa.

    1 answer

    • CUSTOMER CARE

      A:

      Yes, this unit requires Cat.III stainless steel venting piping, based on your local codes it may also require B-vent.

      Answered on 5/27/2015 by Supplyhouse Staff from New York
  • T-KJr2-IN Takagi Tankless Indoor Water Heater (Propane)

    Q:

    Can this be used with a 20lb propane tank?
    Asked on 2/24/2015 by LB from CA

    2 answers

    • CUSTOMER CARE

      A:

      with the correct regulator it should work, you should consult Takagi or an installer to verify.

      Answered on 3/12/2015 by Supplyhouse Staff from New York
    • A:

      Yes, I have done this on a temporary basis (that became weeks) and it worked flawlessly. No worries operationally. Only issue might be usage of propane relative to a small tank.

      Answered on 3/25/2015 by J. Cross from St. Johnsbury, Vermont
  • T-KJr2-IN Takagi Tankless Indoor Water Heater (Natural Gas)

    Q:

    I'm thinking of using this to replace my current 40 gallon unit. My current unit vents straight up and then joins in with the Furnace exhaust before the roof. Will I need to change this setup, or will this unit exhaust just fine with the furnace?
    Asked on 2/8/2015 by VGG from Kansas

    1 answer

    • CUSTOMER CARE

      A:

      the unit needs to be vented separately

      Answered on 3/11/2015 by Supplyhouse Staff from New York
  • T-KJr2-IN Takagi Tankless Indoor Water Heater (Propane)

    Q:

    The Takagi T-KJr2-IN meets what I am looking for but it is propane. I have natural gas and solar electricity. what would meet my needs?
    Asked on 1/27/2015 by sylvia from Linden nj

    1 answer

  • T-KJr2-IN Takagi Tankless Indoor Water Heater (Propane)

    Q:

    Hello, I am trying to use this for a hot water heating system.

    The system will operate just fine at 122F, however when trying to get the temperature to go up from 122, the control panel will not let me and beeps 3 times.

    I can adjust down just fine.

    The propane pressure is 12.5.

    Cannot think of what else to do, still waiting around to hear back from Supply house.
    Asked on 1/6/2015 by BigTires001 from Pittsburgh, PA

    2 answers

    • CUSTOMER CARE

      A:

      you would need to contact Takagi, that maybe the max temp based on entering water temp & flow rate.

      Answered on 1/15/2015 by Supplyhouse Staff from New York
    • A:

      After talking with takagi they determined it had to be something with the computer control board. I had another one and it worked perfectly.

      Just a side note there are many variations of this heater, they all have the capability to reach 167F. Does not matter about flow rate, fuel type etc' The only factor you must have it the control panel to set above 140F, which comes with it and I feel is very useful for determining Delta T and flow rate.

      If you do not have the control panel for some reason there are dip switches on the low voltage panel that allow you to manually set the temp from 122F to 140F in a few increments.

      Answered on 1/20/2015 by bigtires001 from Pittsburgh, PA
  • T-KJr2-IN Takagi Tankless Indoor Water Heater (Propane)

    Q:

    Will this unit work as a back up for a solar water heating system? Will the water flow through when it is hotter than set temp? Or would I need to run some sort of by pass system? The coolest the solar water ever gets is @ 90F not quit hot enough for a good shower.Thank you for the info.
    Asked on 12/2/2014 by kwikenuff from stony point,nc

    2 answers

    • A:

      Yes. The Takagi will simply stop burning fuel if the water is within about 5 degrees, soon as the temperature gets lower it will slightly top off the temp to you desired level.

      Also if you use the included control panel You can still watch the water temperature on the inlet and outlet as well as the flow rate even if the takagi is powered off by the control panel or it is simply not heating water.

      Answered on 1/6/2015 by BigTires001 from Pittsburgh, PA
    • CUSTOMER CARE

      A:

      yes, both maybe more efficient.

      Answered on 12/30/2014 by Supplyhouse Staff from New York
  • T-KJr2-IN Takagi Tankless Indoor Water Heater (Natural Gas)

    Q:

    I need to know more about the direct vent. My current tankless is vented thru the chimney and seems to be fine. Nothing else uses the flu. What problems can I have if vented that way?
    Asked on 10/26/2014 by Jill from kansas city mo

    1 answer

    • CUSTOMER CARE

      A:

      often these direct vent will not have the pressure to properly exhaust if the flue is not run as per manufacturers guidelines.

      Answered on 10/28/2014 by Supplyhouse Staff from New York
  • T-KJr2-IN Takagi Tankless Indoor Water Heater (Propane)

    Q:

    Does this unit need a pressure release valve on the output?
    Asked on 10/11/2014 by Richard from United States

    2 answers

    • CUSTOMER CARE

      A:

      Yes, it is recommended to include a pressure relief valve with the unit. Takagi offers a set of them for this unit: http://www.supplyhouse.com/Takagi-TTM-IV32-AB-Lead-Free-Isolation-Pressure-Relief-Valves-3-4-FNPT-x-FNPT-T-M32

      Answered on 10/14/2014 by SupplyHouse Staff from NY
    • A:

      Yes you will need a pressure relief valve. The gentleman before me suggested these isolation valves which I also suggest: http://www.supplyhouse.com/Takagi-TM-IV50-AB-Lead-Free-Isolation-Pressure-Relief-Valves-1-FNPT-x-FNPT-T-M50

      However I would only add to that by mentioning that the pressure relive valve itself is a separate piece screwed into the hot side of the isolation valve kit. The actual pressure relive valve that comes with the kit is 150PSI, which is way too high for todays radiant heating systems. If running a radiant heat system I would suggest 30PSI for the relief valve itself as you typical run these systems from 12-15 psi.

      http://www.supplyhouse.com/Cash-Acme-20166-0030-3-4-F30-Pressure-Only-Safety-Relief-Valve-30-PSI

      Answered on 1/6/2015 by BigTires001 from Pittsburgh, PA
  • T-KJr2-IN Takagi Tankless Indoor Water Heater (Propane)

    Q:

    what about valves for water lines and on hot side for T&P installation?
    Asked on 7/22/2014 by Amen Plumbing & Heating from Rio Rancho, NM

    1 answer

    • CUSTOMER CARE

      A:

      We would recommend part 9007604005, which includes shut-off valves and a pressure relief valve. T-KJr2 units include a high‐temperature shut-off switch, which can serve as temperature relief unless local code requires an external temperature-relief valve.

      Answered on 7/24/2014 by SupplyHouse Staff from NY
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