Takagi Tankless Water Heater Reviews (2019)

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Takagi is one of the top-rated tankless water heater companies that dedicates itself to the production of tankless products only. Its tankless water heaters have a reputation of having the highest flow rate as well as high thermal efficiency.

This Takagi Tankless water heater review will go through their best rated models so you can make an informed decision when selecting a Takagi tankless water heater but first lets look at its history.

History of Takagi

Takagi is a tankless water heater manufacturing company that has its base in Japan. Starting its operations in 1946 the company has undergone various stages of development since then.

Such stages included the construction of the company’s head office at the current location in 1956 and changing of the name to Takagi Industrial Co., Ltd in 1968.

In 1996, it received ISO9001 certification, and in 2011 changed its name to what we now now.

Since then, the company has grown to become a global leader in manufacturing tankless water heaters.

This includes having a presence in major cities and countries around the globe.

Knowing a companies history adds to the credibility and confidence when making a purchase. If you are considering a Takagi tankless water heater, then rest assured it is a well established company who most likely won’t be going anywhere anytime soon.

Pros of Takagi Brand Compared To Other Brands

  • Availability of an Air-fuel Ratio Sensor that minimizes the emission of gas and maximizes the efficiency of the heater.
  • All Takagi brands have a Freeze protection system which protects the water heaters.
  • Hi-limit switch to ensure the temperature of your hot water is always safe.

Takagi Tankless Water Heater

The different models of Takagi tankless water heaters available in the market in the market offer a challenge when it comes to selecting one.

However, this should not hinder you from selecting your preferred brand.

Here is a breakdown of the top Takagi tankless water heater reviews that will give you most of the information you will need.

Hopefully by the end of it, you will know which Takagi water heater maybe suitable for your household

 Takagi Tankless Water Heater Review Model Comparison Table

Name Rating Prices Fuel Type Application type Location
Takagi T-KJr2-IN-NG 3.9 out of 5 stars (3.9 / 5)

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CHECK PRICE ON AMAZON Natural Gas On point Indoors
Takagi T-KJr2-IN-LP 3.9 out of 5 stars (3.9 / 5)

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CHECK PRICE ON AMAZON Propane On point use Indoors
Takagi T-KJr2-OS-NG  4.2 out of 5 stars (4.2 / 5)

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CHECK PRICE ON AMAZON Natural Gas and propane Multipoint Outdoors
Takagi T-K4-OS-NG  4.3 out of 5 stars (4.3 / 5)

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CHECK PRICE ON AMAZON Natural gas Whole house Outdoors
Takagi T-H3-DV-N  3.9 out of 5 stars (3.9 / 5)

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CHECK PRICE ON AMAZON Natural Gas Whole house Indoors
Takagi T-H3J-DV-N  4.6 out of 5 stars (4.6 / 5)

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CHECK PRICE ON AMAZON Natural Gas On point Indoors
Takagi T-K4-IN-NG  4.3 out of 5 stars (4.3 / 5)

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CHECK PRICE ON AMAZON Natural Gas Whole house Indoors and Outdoors
Takagi T-K4-IN-LP  3.9 out of 5 stars (3.9 / 5)

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CHECK PRICE ON AMAZON Propane Whole house Indoors
 

Takagi T-H3S-OS-N

 5 out of 5 stars (5 / 5)

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CHECK PRICE ON AMAZON Natural Gas multipoint Outdoors
Takagi T-H3M-DV-N  4.7 out of 5 stars (4.7 / 5)

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CHECK PRICE ON AMAZON Natural Gas On point Indoors
Takagi T-D2-IN-NG  4.5 out of 5 stars (4.5 / 5)

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CHECK PRICE ON AMAZON Natural Gas Whole house Indoors

Takagi Tankless Top Rated Models

1

Takagi T-KJr2-IN-NG Indoor Tankless Water Heater

  • Fuel Type: Natural Gas
  • Application Type: on point
  • Location: Indoors
  • BTU: 140,000
  • GPM: 6.6
  • Energy Efficiency: 81- 83%
  • Size: 6.7 x 13.8 x 20.3 inches
  • Weight: 37 pounds
  • Display: digital
  • Warranty: 5 Years

This magnificent water heater has the latest tankless water heater that you are looking for. Such features include a fuel-air ration sensor which tracks and detects the level of pollutants the heater releases.

This ensures minimal pollution of the environment during the operation period. Apart from this, you have anti-freeze protection and digital meter protection.

These systems work to minimize rates of failure of your heater. With a flow rate of 6.6 GPM, you have a guarantee of a constant supply of hot water.

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PROS:
  • This tankless water heater offers you durability by continuously supplying your entire household water for up to 10 years.
  • It comes with advanced DIP switches which guarantees you of efficient performance within your household.

CONS:
  • Installing this model if you lack a DYI is expensive. To reduce this, you may need the services of a professional.
  • It is not ideal if you have more than two bathtubs. You won’t enjoy your hot water supply.

User Rating:

4.2 out of 5 stars (4.2 / 5)

2

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

  • Fuel Type: Propane
  • Application Type: on point
  • Location: Indoors
  • BTU: 140, 000
  • GPM: 6.6
  • Energy Efficiency: 81-83%
  • Size: 6.7 x 13.8 x 20.3 inches
  • Weight: 40 pounds
  • Display: Digital
  • Warranty: 5 years

If you have a large home, then this is a brand that should top your list since you can use up to 5 bathtubs at a go.  You have a guarantee of a continuous flow of hot water with its 6.6 GPM.

However, if you are planning to use this brand in colder regions, you should expect the flow rate to drop to between 3-5 GPM.

Another feature of this brand is its self- modulation that allows it to monitor and regulate the temperature. This, in turn, reduces temperature fluctuation of your water.

Also, you have a digital remote control which assists you in controlling the temperature of your hot water.

PROS:
  • You don’t have to incur much expense on maintenance when using this model. This reduces your maintenance costs.
  • You have an assurance of a constant supply of hot water.

CONS:
  • You have to spend extra to install the venting kits. This pushes up the cost of this brand.
  • You cannot use this model for a whole house unit. It will cause temperature fluctuation

User Rating:

4.2 out of 5 stars (4.2 / 5)

3

Takagi T-KJr2-OS-NG Outdoor Tankless Water Heater

  • Fuel Type: Natural Gas and propane
  • Application Type: multi point
  • Location: Outdoors
  • BTU: 140, 000
  • GPM: 6.6
  • Energy Efficiency: 82%
  • Size: 6.7 x 13.8 x 20.5 inches
  • Weight: 38 pounds
  • Display: Digital
  • Warranty: 5 years

If you don’t have a gas line and you think which tankless heater to purchase, then you need to consider this brand. It gives you the option of either using natural gas or propane as the source of energy.

Its small and compact size allows you the flexibility of selecting an installation place that is convenient for you. The energy efficiency of this model is high at 83% which implies less heat is lost during the operation period.

Furthermore, it takes little time for hot water to flow through the pipe thus minimizing heat los

PROS:
  • There is two energy option available for this heater, that propane gas, and natural gas.
  • It is ideal if your apartment is small.
  • It Gives you a continuous flow of hot water.
  • It allows for outdoor installation.

CONS:
  • If you have various showers open at once, you will experience a temperature drop.

User Rating: 

4.2 out of 5 stars (4.2 / 5)

4

Takagi T-K4-OS-NG Tankless Water Heater

  • Fuel Type: Natural Gas
  • Application Type: whole house
  • Location: Outdoors
  • Btu: 190, 000
  • GPM: 8
  • Energy Efficiency: 82%
  • Size: 8.5 x 13.8 x 20.3 inches
  • Weight: 38 pounds
  • Display: Digital
  • Warranty: 5 Years

If you are looking to free up your interior space, then this is a type of tankless heater for you. Using natural gas as the source of energy, you don’t have to purchase extra ventilation kit.

This model has incorporated the latest technologies to give you a high-performance tankless water heater. It has a built-in vent that allows for circulation of air needed for combustion as well as the combustion byproducts

PROS:
  • Availability of a self- modulating system gives the unit flexibility of using either 11, 000 or 190, 000 BTU every hour
  • 8 GPM flow rate allows for a continuous supply of hot water that can serve up to four showers at a go.

CONS:
  • The manufacturer’s warranty is limited than that which other manufacturer’s offer to their brand.

User Rating: 

4.3 out of 5 stars (4.3 / 5)

5

T-H3-DV-N Condensing High-Efficiency Natural Gas Indoor Tankless Water Heater

  • Fuel Type: Natural Gas
  • Application Type: whole house
  • Location: Indoors
  • BTU: 199000
  • GPM: 10
  • Energy Efficiency: 95%
  • Size: 11.2 x 17.8 x 24.9 inches
  • Weight: 59 pounds
  • Display: Digital
  • Warranty: 5 years

 

If you are worried about scorching water temperature, then this is a heater you should try out. It has a Hi-limit switch which ensures water flow is at safe temperature levels by automatically switching off the heater through disengagement of the gas valves.

Also, it has an overheat cutoff fuse which retains heat thus protecting the heater. The Takagi T-H3-DV-N offers a condensing design which ensures maximum energy efficiency.

You are also able to enjoy the constant flow of hot water which you can serve up to 3 bathtubs at the same time. This is due to its flow rate which is at 10GPM.

Lastly, like all other models of Takagi, this one comes with a remote control which gives you absolute freedom of controlling the temperature of your hot water.

PROS:
  • A high flow rate than other brands of Takagi tankless water heaters
  • Has a condensing design
  • Lightweight which gives you the choice of selecting where to install
  • A high-temperature range for your hot water

CONS:
  • Some reported slight delays in hot water flow in this model

User Rating: 

3.9 out of 5 stars (3.9 / 5)

6

Takagi T-H3J-DV-N Condensing High-Efficiency Natural Gas Indoor Tankless Water Heater

  • Fuel Type: Natural Gas
  • Application Type: on point
  • Location: Indoors
  • BTU: 160, 000
  • GPM: 6.6
  • Energy Efficiency: 95%
  • Size: 11.2 x 17.8 x 24.9 inches
  • Weight: 58 pounds
  • Display: Digital
  • Warranty: 5 years

This is a perfect brand for your residential since it guarantees you a constant flow of hot water for a longer time. This is due to the heating element consisting of copper which is resistant to corrosion.

The availability of a direct vent construction allows you the flexibility when you are installing it. Lastly, if you have multiple usage points, then this is an ideal water heater for you.

PROS:
  • It is so much easier to install this model in your property. All you need is to follow basic instructions on the manual.
  • It has a very low carbon footprint.
  • There will always be an assurance of hot water supply.

CONS:
  • Costs of repair are expensive since the parts are expensive for this model, if it falls outside of warranty.

User Rating: 

4.6 out of 5 stars (4.6 / 5)

7

Takagi T-K4-IN-NG Indoor Tankless Water Heater

  • Fuel Type: Natural Gas
  • Application Type: whole house
  • Location: both indoors and outdoors
  • BTU: 190, 000
  • GPM: 8
  • Energy Efficiency: 82
  • Size: 8.5 x 13.8 x 20.5 inches
  • Weight: 43 pounds
  • Display: Digital
  • Warranty: 5 years

Using this model gives you the option of either outdoor or indoor installation. Its special design also allows you to install it either horizontally or vertically.

If you have an average size home, then this is a perfect tankless water heater for you since it has a flow rate of 8 GPM. Moreover, by connecting several of them, you can use it as a commercial tankless water heater.

You don’t have to worry about your heat regulations since this model has a self-diagnostic system. This allows it to regulate the water heat by shutting down when the heater has too much heat.

Digital remote control allows you to control the temperature of your hot water remotely thus giving you flexibility with your heater.

PROS:
  • Climate does not affect your hot water supply.
  • It has internal freeze protection.
  • A self-diagnostic system ensures the safety of the tankless water heater.
  • You have a tremendous flow rate which ensures a continuous supply of hot water.

CONS:
  • Installation of the digital remote control comes at an extra cost.
  • You need a gas line for this model. It can be a limitation if your region lacks a gas line system.

User Rating: 

4.3 out of 5 stars (4.3 / 5)

8

Takagi T-K4-IN-LP Indoor Tankless Water Heater

  • Fuel Type: Propane
  • Application Type: whole house
  • Location: Indoors
  • BTU: 190, 000
  • GPM: 8
  • Energy Efficiency: 82
  • Size: 8.5 x 13.8 x 20.5 inches
  • Weight: 43 pounds
  • Display: Digital
  • Warranty:  5 Years

Like all the other brands of Takagi, there are various advanced features that you should expect when using this brand. For instance, you expect a freeze- protection system, an Air Fuel Ratio, and an overheat cutoff used.

The model comes with an electric ignition which reduces the hustle of igniting the heater. By having an energy efficiency of 82%, you have a guarantee of minimal heat loss when using the brand.

PROS:
  • Due to the presence of a self- modulating system, this brand can work efficiently with either 110, 000 or 190, 000 BTUs per hour.
  • Its flow rate is 8GPM which is relatively high ensures

CONS:
  • You will have to wait for a while for the water to heat up.

User Rating: 

3.9 out of 5 stars (3.9 / 5)

9

Takagi T-H3S-OS-N Condensing High-Efficiency Natural Gas Outdoor Tankless Water Heater

  • Fuel Type: Natural Gas
  • Application Type: whole house
  • Location: Outdoors
  • Btu: 180, 000
  • GPM: 8
  • Energy Efficiency: 95
  • Size: 11.2 x 17.8 x 24.9
  • Weight: 58 pounds
  • Display: digital
  • Warranty: 5 Years

You have the option of using Takagi T-H3S-OS-N Condensing High-Efficiency Natural Gas Outdoor Tankless Water Heater for either your commercial or residential property.

This model meets the various environmental standard regulations which ensure it does not pollute the environment. This heater offers hot water that can serve up to three bathtubs if it is in a colder climate while utilizing 180,000 Btu gas input

However, if you are in a warmer climate, this model can serve up to 4 showers at the same time without compromising on the temperature.

PROS:
  • This tankless water heater offers a constant supply of hot water with the temperature reaching as high as 140F.
  • Like other brands, this model has the latest technologies that protect it from freezing, surging and overheating.
  • Its lightweight and compactness allow you the freedom of installing it anywhere of your convenience.

CONS:
  • You will need a professional to install this heater on your property.
  • It is not ideal for use in hard water.

User Rating: 

5 out of 5 stars (5 / 5)

10

Takagi T-H3M-DV-N Condensing Direct Vent Tankless Water Heater

  • Fuel Type: Natural Gas
  • Application Type: On point
  • Location: Indoors
  • BTU: 120000
  • GPM: 6.6
  • Energy Efficiency: 93%
  • Size: 17.8 x 13.1 x 29.5 inches
  • Weight: 49 pounds
  • Display: Digital

The design of this model is for those with little space to install a tankless water heater. It allows for a maximum flow rate of 6.6 GPM while utilizing only 120000 BTUs.

It comes with a troubleshooting diagnostic code which is useful when in cases of mechanical problems. Also, it is Ultra-low NOx compliance which ensures minimal emission of hazardous gases.

Another cool feature is its ability two allow for up to 2 bathtubs o operate simultaneously without compromising the temperature level.

  • Warranty: 5 years
PROS:
  • The instant flow of hot water within seconds
  • Users enjoy a reduction of 11.5% on energy
  • User-friendly setting
  • Portable and sleek in design
  • Capable of running on 2D batteries in the absence of propane gas

CONS:
  • The need for additional venting system makes it an expensive heater.
  • You will need to hire an expert to do the maintenance for you which is costly

User Rating: 

4.7 out of 5 stars (4.7 / 5)

11

Takagi T-D2-IN-NG Indoor Tankless Water Heater

  • Fuel Type: Natural Gas
  • Application Type: whole house
  • Location: Indoors
  • BTU: 199,000
  • GPM: 10
  • Energy Efficiency: 83%
  • Size: 8.5 x 13.8 x 20.3 inches
  • Weight: 45 pounds
  • Display: Digital
  • Warranty: 5 years

There are some great features that you will notice with this brand. This includes offering up to 10 GPM of hot water while only using 199, 000 BTU.

The flow rate of this model is responsible for the hot water supply which you can have up to 5 usage points at the same time.

Control of your gas bills is significant when it comes to heaters with gas as the source of energy. That is why this brand has an electric ignition controller which controls your gas usage.

The availability of a thermistor offers a temperature control mechanism which can control the temperature of the heater.

PROS:
  • It is Energy Star certified which gives you a guarantee of its usability
  • You will enjoy a constant flow of hot water thanks to its 10GPM flow rate
  • It is ideal for light commercial property use.

CONS:
  • The need for a venting kit will add to your cost which will make it expensive.

User Rating: 

4.5 out of 5 stars (4.5 / 5)

Conclusion

You are now aware of the top Takagi tankless water heaters in the market.

This review was based on our tech team spending hours of research on customer feedback.

Remember, to consider all the relevant specifications as well as your application before you make purchasing your Takagi brand as your needs are different toe everyone else’s.