ENERGY STAR® qualified Takagi T-KJr2-IN-NG is a gas fired, compact, fully modulating, tankless water heater that is ideal for residential usage. The unit can easily produce sufficient hot water for two bathrooms with its gas input of 140,000BTU. The unit has less than 14 ng/J (<20ppm), which means it fully complies with Ultra-Low NOx regulations. T-KJr2-IN-NG is a multi-purpose heater that can be used with hydronic heating systems, storage tanks, radiant floor systems, recirculation systems and indoor heating applications for residences. The number of showers that the heater can handle relies upon ground water temperature. With just 0.82 natural gas energy factor and tendency of giving out a flow rate of 6.6GPM when temperature rises to 35degree F, this heater turns out to be the perfect option. It also comes with a remote control, built-in safety features like freeze/overheat/surge protection and troubleshooting diagnostics to avoid gas leakage, and a power cord.
The Pros & Cons of the Takagi T-KJr2-IN-NG
Installation and Specifications
The unit already contains a remote control and a comprehensive step-by-step guide for installation. You will have to run a category III vent pipe and single wall or PVC won’t work. The unit requires a 3/4inch gas fitting and you need to ensure that the gas supply is sufficient enough to feed the unit. The heater has a power vent, which automatically adjusts gas consumption as per the demand and makes expanded horizontal venting possible. You will need to install a black glow preventer into the vent pipe if you reside at an area where temperatures can drop below 20degrees F. Since the unit requires double wall stainless steel exhaust vent, the cost may get higher.
|Water Connection Size||3/4"|
|Flow Rate @ 35 F Rise (gallons/min)||3.4 gal (US)/min|
|Flow Rate @ 45 F Rise (gallons/min)||4.2 gal|
|Fuel Type||Natural Gas/Propane|
|Gas Connection Size||3/4"|
|Gas Product Type||Point of Use|
|Gas Type||Natural Gas|
|Maximum Temperature (F)||140|
|Minimum Activation Rate (psi)||15|
|Minimum Temperature (F)||77|
|Product Weight (lb.)||33 lb|
|Residential/Commercial/industrial Use||Residential or commercial|
|Water Connection Location||Bottom|
|Water Heater Features||Wall Mountable|
|Vent Type||Single Wall|
You need to be very careful while installing the unit because a minor flaw or mistake such as a lose connection can cause serious damage due to gas leakage. It is the smallest available gas tankless heater model and is more appropriate for small homes such as for a family of five. If you can afford the high installation cost due to involvement of a professional then go for this eco-friendly, compact and efficient water heating solution.
This is a good choice of a tankless water heater to buy as installation is quite easy and it has received great reviews as being a heater that can support the needs of a family of five as opposed to other tankless water heaters that do not perform so well if the hot water needs are high. As for being environmentally friendly, the heater complies with Ultra-Low NOx regulations of less than 14 ng/J (<20ppm).