Best Propane Tankless Water Heater

If you are stuck with the dilemma of selecting the best tankless water heater, going for a propane tankless water heater is a very viable option. Propane water heating options normally includes technology that is on the cutting edge side of energy efficiency. One such example is a propane tankless water heater. Choosing an energy-efficient propane water heating system over the standard electric water heater can help you significantly reduce your energy costs. According to the Department of Energy, they roughly estimate that 20 percent of a home’s energy costs are spent on heating water. So, as a homeowner select an efficient water heater is very critical and propane-fueled tankless water heaters are some of the most efficient water heating technologies available today. But which one is the best? According to our research and tests, one propane tankless water heater stands above all else. That is the Takagi T-KJr2-IN-LP Tankless Water Heater. Keep reading to find out why this is the king of the hill.

Main Characteristics

This unit demands a power input of up to 140000 BTUs per hour. It can provide hot water with temperatures above 150 degrees Fahrenheit. This tankless water heater can produce up to 6.6 gallons every minute. This is perfect for those living in the moderate climates. This propane tankless water heater can support various hot water applications at the same time. The downside is, for colder regions, the flow rate can drop to 3 -5 GPM. This unit also has an integrated remote controller, which allows you to set your preferred water temperature a lot easier. The remote controller comes with the package upon purchase. This model is Energy Star certified and has an Energy Factor of 0.81-0.83. It is capable of offering the same level of performance as a traditional water heater with a 40-gallon tank. Another additional feature in this model is that it can also support radiant floor heating applications. This is the reason why many call it an all-around water heater.

Pros and Cons


  • Excellent performance
  • Less maintenance required
  • Provides over 150 degrees Fahrenheit hot water in a moderate climate at 6.6 gallons per minute
  • Comes with a remote control system
  • Light in weight and occupies a small space
  • Easy to install
  • For the output it provides, it has an affordable price tag
  • Has convenient and adjustable settings for both water temperature and water flow
  • Includes thermistors that minimize the occurrence of water pressure fluctuations


  • Only suitable for small to medium houses
  • Requires a ventilation system to release the harmful fumes
  • Warranty offered is not as good as some of their competitors
  • Can’t be converted to other systems


The Takagi T-KJr2-IN-LP Tankless Water Heater’s compact nature is also one of its main selling point. It is designed to be lightweight by nature as it only weighs 38 pounds. Compared to most propane tankless water heaters, this unit is pretty small and light. The Takagi T-KJr2-IN-LP Tankless Water Heater measures 6.7 by 13.8 by 20.3 inches. This will allow you to enjoy propane power without compromising your space-saving goals. It is also designed to be a “point of use” unit. That means that you have to buy more than one, if you have a larger home with multiple bathrooms.

Special Features

What makes this unit great is that it demands minimal maintenance requirements. And as mentioned above, it can provide hot water with temperatures above 150 degrees Fahrenheit, which is perfect even in colder climates. Also, his unit can produce up to 6.6 gallons every minute. Lastly, the Takagi T-KJr2-IN-LP Tankless Water Heater includes inlet and outlet thermistors that will provide continual temperature and energy output monitoring. This makes it a more energy efficient tankless water heater.


The manufacturer provides a 10-year warranty for the heat exchanger and a 5-year warranty for parts and accessories. It also has a limited labor coverage. The manufacturer will provide for reasonable labor charges associated with warranty repairs or replacements within one year from the date of purchase. Reasonable labor charges shall be determined in the sole discretion of the manufacturer and paid directly to the Service Representative or licensed plumbing professional. Warranty service must be performed by an authorized Service Representative.


The reason why it is considered the best propane tankless water heater is because it has highly favorable reviews and a decent warranty. This propane tankless water heater will make a solid investment for any small home, apartment, condo, or even an office. It is a cost-effective solution for reducing your home’s monthly energy consumption. So if you are looking for a long term solution to your heating issues, the Takagi T-KJr2-IN-LP Tankless Water Heater is your best bet.

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