Takagi T-KJr2-IN-LP Review

If you are looking for a tankless heater for a small or medium house with 2-3 bathrooms and need to use either a washing machine and dishwasher along with a shower, then you can choose Takagi T-KJr2-IN-LP. It can supply 6.6 Gallon per minute at 35°F temperature rise and 3.3 GPM at 70°F rise. This China-made tankless water heater is environment-friendly and gas-fired. Moreover, it has a warranty of 15 years, so if you are concerned about investing in a product that has to be durable, then your concern is well addressed.

Last update on 2021-06-29 at 04:40 / Affiliate links / Images from Amazon Product Advertising API

Features: Takagi T-KJr2-IN-LP Indoor Tankless Water Heater

For high altitude places

Those living far above sea level know most water fixtures have restricted function at that height. Pondering it, Takagi’s all version of Takagi T-KJr2-IN-LP (it has four versions) has a resistance over 6000 ft above sea level. You need to maintain the deep switch setting when installing it at different altitudes, though. It has different settings for 0-2000 ft, 2000-4000 ft, 4000-6000 ft. So read the manual if you are connecting without professional help.

Remote control

Like TV, light other electric features that offer remote for your convenience Takagi T-KJr2-IN-LP Indoor Tankless Water Heater comes with both remote control and power cord. Now you can use it to control the heat though you are in the shower and the unit is five or more meters away from you.

Pay as you use

Unlike traditional water heaters, Takagi T-KJr2-IN-LP Indoor Tankless Water Heater runs have fully modulating technology, so the burner runs when sensing a water flow over.75 GPM. When not in use, you need not pay for it unless you turned the freeze protection. Also, your gas bill will less at least 33% if you set the temp at 131 degrees (this is the temperature that saves your bill, but you are free to fix it as you wish. If 131 is not enough, the choice is solely yours).


With a dimension of 6.7 x, 13.8 x 20.3, Takagi T-KJr2-IN-LP tankless heater saves 12 cubic feet of your space.

Good safety features

“Safety” is written all over the elements of Takagi T-KJr2-IN-LP. Therefore the venting system in Takagi T-KJr2-IN-LP is made of category III stainless steel, copper alloy on a heater for efficiency. Other safety features include freeze, overheat surge protection, and troubleshooting diagnostic codes that let you know about significant problems ahead of time.

Other Features

  • Suitable for residential usages with gas inputs of 140,000 BTU
  • Concomitant of ultra-Low NOX regulations, which are less than 14 ng/J (<20ppm)
  • Fifteen years limited heat exchanger warranty and five years limited warranty on a part in residential use.


Not for big homes- 6.6 GPM at 45+ degree F, so if you’re thinking of serving a house with 6-10, it is not suitable for it.


6.6 GPM at 45+ degree F is not bad. We calculate the GPM to find out the maximum capacity a water heater can handle at a time. In general, a showerhead can maximum have 2.5 GPM. So whether it is a one-man’s home or many if no more than two showerheads is busy, your heater will not let you down. So 2-3 bathroom houses can use this one.

Installation expensive- Warranty will be void if you install it yourself. Again paying for a plumber who is certified by the Takagi group is complex and costly.


That is true, but Takagi did not make it impossible for you to do it yourself. Manuals are detailed and easy to understand. So if you are trading off future unseen repair costs with professional installation costs and ready to give up a warranty, you have the right resources within reach.

List of Takagi Water Heaters

Takagi T-KJr2-IN-NG

Takagi T-KJr2-OS-NG

Takagi T-H3-DV-N

Frequently Asked questions

Mine is a family of 5. Will it do?

Depends on your inlet temperature. If it is more than 40 degrees F, it can function between 2-3 applications.

What to do if it takes longer to deliver hot water between features?

The time a heater takes to deliver hot water to fixtures depends on the tipping length between two fixtures. The bigger the pipes, the longer it will take to get hot water. USA USA water recirculation system or set it as near as you can from the fixture you want fastest hot water.

Learn the basics of how to install a Takagi tankless water heater

Read: Takagi tankless water heater manual

Takagi T-KJr2-IN-LP Indoor Tankless Water Heater Propane can provide considerable support to any climate. In cold places like Alaska 1 shower and warm places like Florida 3 showers. If you need a gas-fired and indoor tankless unit, you can choose Takagi T-KJr2-IN-LP, another version of the same company of the same name that is mostly for outdoors.

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