Noritz Vs Takagi

A tankless water heater is an ideal solution for a home water supply because of its cost-effectiveness and efficiency.

When compared to a standard water heater with a tank, you save more money on your energy expenses every month.

Unfortunately, it isn’t always easy to find the perfect tankless water heater due to the number of brands and types available. To help, we’ll examine the two leading brands on the market in this Noritz vs Takagi comparison, exploring how they compare by looking at their similarities and differences.

noritz water heater

Noritz Tankless Water Heaters

Noritz is a key brand in the tankless water heater market and has been for almost three decades. They offer a diverse range of solutions to suit the demands for hot water in both residential and commercial settings.

Their products usually come with a slew of essential features, which helps to justify their hefty price tags.

It’s worth noting that Noritz comes from Japan, which lends to its legitimacy as a trustworthy brand. The corporation thrives on its ability to innovate and provide outstanding customer service.

A key element that makes Noritz heaters unique is the quality of the components it uses in its water heater construction, such as modulating burners and quality heat exchangers made of stainless steel.

Noritz has many essential features and benefits, including:

A Continuous Supply Of Hot Water For Your Home

Not only are Noritz heaters cost-effective, but they are also highly efficient. Tankless water heaters ensure a constant supply of hot water.

But that isn’t even the most important aspect, because that is the entire goal of utilizing a tankless water heater.

However, if you use Noritz instead of a standard storage tank, you can save as much as half of your water expenses.

High Flow Rates

Noritz tankless water heaters also have high capacity. Given that most tankless heaters don’t have a high flow, this is an important aspect of Noritz water heaters.

So, if you’re thinking about switching to a tankless water heater in a big house, a Noritz water heater is a wonderful option.

Compact Design

Noritz tankless heaters are typically small and lightweight. They are frequently a great alternative for small-space households.

Gas Powered

Noritz’s tankless heaters are all powered by gas. Depending on the model, this might be propane or natural gas.

Natural gas types are popular, but propane variants are typically more pricey.

Noritz Units We Recommend

Here are our top five suggestions for the best units from Noritz on the market.

1. Noritz NRC66DVNG

noritz nrc66dvng indoor condensing direct tankless hot water heater

Indeed, there is no such thing as a perfect tankless water heater, but several come close. One is the NRC66DVNG.

There is a lot written about the ease of installation as well as how light it is, making wall mounting easy. The heater weighs about 39 pounds in total.

This water heater is also tiny and hence space-saving, in addition to being lightweight, making it a great option if you only have a small amount of space.

As long as there is adequate ventilation, you can use this unit in a garage, a closet, an attic, or anywhere else suitable. Since the heater is controlled by a thermostat, you don’t have to concern yourself with accessibility.

The temperature is adjusted in 5-degree increments with a flow rate of roughly 6.6 GPM. The water heater is also energy-star certified. It emits very little NOx, making it environmentally friendly and healthier for the earth.

It runs on gas and uses carbon-reduction technologies to keep emissions to a minimum. So, you can place the heater indoors or outdoors based on the space available.

The heater has dual heat exchangers, both of which are corrosion-resistant. The first uses stainless steel and the second uses copper.

This device boasts a 0.91 energy factor, and it saves you up to 60% on your energy expenditures. As a result, it is one of the highest energy-efficient tankless systems available.


  • Very efficient
  • Installation indoors or outdoors
  • Eco-friendly
  • Remote thermostat
  • Easy Installation
  • Lightweight and compact


  • Not recommended for bigger homes
  • Costly

2. Noritz NR66ODNG Outdoor Water Heater

noritz nr66odng outdoor tankless water heater

The Noritz NR66ODNG is another remarkable gas-powered tankless water heater.

This gas unit is one of the most efficient on the market, with a 6.6 GPM low capacity and a UEF of 0.81.

Something you’ll see about this heater right away is how lightweight it is. This alternative is very lightweight, weighing just 36 pounds.

Its enormous flow qualifies it as a viable alternative to huge tank heaters, saving money while meeting your household’s hot water requirements.

This feature along with the compact size makes it extremely easy to transport. As a result, installation is easier.

It is relatively simple to set up. You have the option of doing it yourself or hiring a professional if you don’t feel confident. To make things easier, the heater comes with an easy-to-follow manual.

If you have experience, the entire process should only take about 10 or 15 minutes.

As a result, you can use it straight away after getting it. In any case, installing the device yourself will save you money.

You’ll be relieved to learn about the energy-star rating, which means it uses less electricity. Because of the unit’s adjustable thermostat, you may customize the temperature to meet your demands.

In general, the NR66ODNG has a wide temperature range between 100 and 150 degrees. It’s a very efficient product that will last for quite some time.


  • Long-lasting
  • Energy-star certified
  • Low emissions of NOx
  • Works without vents
  • Suitable for outdoor use


  • Gas consumption is higher

3. Noritz NR50ODNG Outdoor Water Heater

noritz nr50odng water heater

Small to medium-sized households can benefit from the performance of Noritz’s NR50ODNG tankless outdoor heater.

Noritz units use carbon-reducing technology to reduce NOx emissions to the bare minimum.

Therefore, if you are concerned about the earth, you should consider purchasing this or any other models we mentioned.

As implied by its name, this heater is for outdoors. There is no need for expensive venting. Instead, because the device has front vents, you need a large open area.

Installation is simple because of the heater’s small weight (just 33 pounds). You can choose to wall-mount it.

The unit has a high-efficiency rating, which we expect from Noritz. It features a 0.91 energy factor, which is rather excellent and results in significant savings on energy costs for you.

The 5 GPM flow capacity is also sufficient for light domestic uses.

In general, we really like this item, and we are confident that you will be as well, especially considering how much you have to pay. As previously said, it is ideal for medium-sized families with as many as two showers.


  • Compact lightweight design
  • Environmentally friendly
  • Direct ignition
  • Auto overheating protection


  • Expensive

4. Noritz EZTR40NG Indoor Water Heater

noritz eztr40ng 40 gal water heater

Setting up an outdoor heater may not be the greatest solution, especially if you’re living in a cold place. The heater does not have freeze protection. In this case, an indoor heater appears to be the better option.

This indoor device has a modern look that will mix in with most modern setups. If you’re concerned about buying a water heater that won’t blend in with your home decor, this is the type to choose.

The EZTR40NG from Noritz is tiny and lightweight with a modern design. It may easily take the place of a 40-gallon unit.

The heater has numerous safety features, setting it apart from the competition. Lightning protection, condensate overfill, and freeze protection are just a few of the features that help the device run smoothly.

The heater has preset temp controls that allow you to choose the temperature at any moment to ensure you have control over temperature regulation.

With a heat output of 140,000BTU, a capacity of 6.6 GPM, and an energy factor of 0.87, you get around 6.6 GPM and 140,000 BTU of heat.

It’s simple to set up. Although we would advise hiring an expert, even if you’re a novice, you can do the task yourself, depending on how big your wallet is and how handy you are with home projects.


  • Easy installation
  • Durable
  • Eco-Friendly
  • Efficient
  • Advanced safety protection


  • Expensive

5. Noritz NRC71ODNG Outdoor Condensing Tankless Water Heater

noritz nrc71odng outdoor condensing tankless water heater

The Noritz NRC71ODNG, which takes up less space but has a larger flow capacity, rounds off the list.

This condensing heater runs at a higher efficiency while meeting your home’s hot water needs. The flow rate is roughly 7.1 GPM. This amount is more than enough for many households, small and medium-sized ones in particular.

Thankfully, this heater has an LED indicator that tells you when it’s on. Although this may not appear to be a significant feature, it is worth noting because many traditional heaters lack it.

We also like the heater’s general design. The unit is light, weighing only 40 pounds, making installation simple. It has an impressive heating capacity of 140,000BTU and efficiency with an energy factor of 0.94 – in addition to a high flow rate.

This feature indicates that it operates fast. Even in cold conditions, you won’t have to wait long for hot water.

In general, the NRC71ODNG is a very good heater that will be worth the money it costs and is a highly recommended unit.


  • Very efficient
  • Compact convenient size
  • Condensing technology
  • Large hot water capacity
  • High flow rate


  • Pricey

Takagi Water Tankless Heaters

Another brand from Japan with a large selection of high-performing tankless heaters is Takagi. Takagi was one of the first in North America to offer units with heating on-demand and a constant water supply.

Even though their products lack the unique features found in expensive units like Rinnai, they nonetheless manage to deliver excellent results. They even have units with a thermal efficiency of more than 90%.

takagi water heater

The following are the main features of Takagi water heaters:

Gas Powered

Tankless heaters made by Takagi, like those made by Noritz, run on either natural gas or propane.

All gas-powered models have propane-powered counterparts. Propane models are more expensive, but they are much easier to install.


Takagi heater units have great efficiency. As a result, you may anticipate saving a significant amount of energy. Over time, this can add up to big savings.


Takagi heater units are well-known for many reasons, one of which is that they are less expensive than other premium brands. Which isn’t to say they’re cheap; but you’ll almost certainly spend less on a Takagi with a Rinnai.

Takagi water heaters are for the most part less expensive than most of the alternatives.

The Best Takagi Heaters

6. Takagi T-H3-DV-N Indoor Tankless Heater

takagi t-h3-dv-n condensing high efficiency natural gas indoor tankless water heater

The Takagi T-H3-DV-N is the first on the list, and it’s a tankless water heater with many features.

The T-H3-DV-N is undoubtedly at the top of the pyramid in terms of performance and quality. It is built in Japan, much like all other Takagi heaters, which speaks much about its durability.

The heat exchange unit is constructed of a quality copper alloy, making it very powerful and efficient.

This heater is ideal if you’re looking for one that won’t disappoint you. The unit delivers on its promise of endless hot water and is suitable for commercial and residential use.

The flow rate reaches as high as 10 GPM, this water heater is certainly a capable alternative.

The tiny shape is what you first notice about it, which is to be expected given that it’s an indoor device. As a result, you can put it anywhere in your home

This heater could easily take the place of a 50-gallon tank water heater, and there will be no lag in temperature or flow.

In small or medium-sized homes, it also accommodates numerous appliances at the same time.

Furthermore, it has a 199,000 BTU heat output, allowing it to handle extreme temperature rises without affecting the water production much.

This natural gas unit has a condensing system, leaving less trash and using less energy, as the name implies.


  • Automatic overheating protection
  • Freeze protection
  • Remote control
  • Very Durable
  • Energy efficient
  • Noiseless


  • Relatively large
  • Does not include a venting kit

7. Takagi T-H3J-DV-N Condensing Indoor Water Heater

takagi t-h3j-dv-n condensing high efficiency natural gas indoor tankless water heater

The T-H3J-DV-N is quite similar to the Takagi T-H3-DV-N in terms of attributes.

Aside from the price difference, the two devices might readily be mistaken for one another.

Just like other heaters by Takagi, the T-H3J-DV-N will supply consumers with unlimited hot water. It’s small and doesn’t take up a lot of room to set up.

This model has a 6.6 GPM flow rate instead of 10 GPM, which is one of the significant things that is different between this and the previous unit we studied.

This is sufficient to cover the needs of small and even medium-sized households, depending on how many people are in the home.

The heater, as expected, has condensing technology that improves efficiency while also being environmentally friendly.

The T-H3J-DV-heat N’s exchanger tubing uses a commercial-grade copper alloy. As a result, there’s little risk of corrosion. The backup is made of stainless steel and constructed similarly. Overall, it is clear that the entire item will last.

Freeze protection, temperature controls, and overheating protection are among the safety features.


  • Condensing technology
  • Very low NOx emissions
  • Good for commercial and residential use
  • Resists corrosion and rust
  • Won’t break the bank


  • Pricey

8. Takagi T-H3M-DV-N Condensing Direct Vent Water Heater

takagi t-h3m-dv-n

Another natural gas variant, the Takagi T-H3M-DV-N is meant to reduce your energy expenditures.

It’s Energy Star rated, just like the previous models we’ve looked at, so you can trust that it’s quite efficient.

Depending on the outdoor temperature, it will be sufficient for one or two bathrooms (with small appliances). The 6.6 GPM capacity decreases in colder months.

The heater has outlet and inlet thermistors, allowing you to manage the temperature.

Despite its efficiency and high flow rate, the T-H3M-DV-N has less power than other models we’ve looked at so far. As a result, it’s best in light home settings.

This unit is ideal if you live alone or with someone.


  • Continuous temperature monitoring
  • Budget-friendly
  • Heat exchanger made of copper alloy
  • Freeze protection
  • Energy-star rating


  • Noisy at times

9. Takagi T-H3S-DV-P Condensing Indoor Water Heater

takagi t-h3s-dv-n condensing high efficiency natural gas indoor tankless water heater

If you want a device that you can configure to match your heating demands, the Takagi T-H3S-DV-P is a good option.

You can use this propane heater indoors alone or with systems like recirculation, hydronic, tank, and radiant floor heating, making it an extremely versatile solution.

Like all Takagi units, it will last. It emits very little NOx, which is good news for anyone concerned about the earth. It runs on liquid propane with a 0.93 energy factor.

It’s a very efficient tankless water heater that saves you on your energy bills. That said, the equipment and installation will set you back quite a bit of money.

The heater reaches 8 GPM for a rise in temperature of 45 degrees. However, when the temperature rises, this decreases.

The main heat exchanging unit uses copper alloy, which enables optimal thermal transfer. To prevent corrosion, the secondary heat exchanger uses stainless steel.

To summarise, the system ensures little heat loss and all while supplying your home with unlimited hot water.


  • Compact design
  • Integrated controls
  • Adequate Safety features
  • Great for larger households


  • Hard to find any

10. Takagi T-H3S-DV-N Condensing Natural Gas Water Heater

takagi t-h3s-dv-n condensing high efficiency natural gas indoor tankless water heater

Another fantastic condensing unit is the Takagi T-H3S-DV-N and it rounds off the list.

This unit is a great choice if you require on-demand heat. It comes with a high flow output so you can complete various tasks around the house.

The T-H3S-DV-N supports as many as three washrooms with an 8 GPM flow rate, depending on the weather.

In a warm environment, the heater simultaneously serves three washrooms. When the temperature cools, it will better serve two.

The heater has a maximum of 180,000BTU, which is outstanding considering the price.

This, combined with the sensors installed, helps to reduce heat loss.

This unit has an energy factor of as high as 0.82, which is sufficient to cut your bill. It also offers a broad temperature range, allowing you to adjust the temperature of the water according to the weather.

The heater is intended for indoor use and can also be utilized in residential and commercial settings, as the name implies. It works silently and is simple to set up.


  • Very low NOx emission
  • Easy installation
  • Noiseless
  • Automatic safety features
  • Compact


  • Heavy

Energy Efficiency

When it comes to efficiency, each of these brands performs admirably. There isn’t much of a change if any at all. Both non-condensing and condensing heaters are available from Noritz and Takagi.

Flow Capacity

Although both brands have a high flow rate, Noritz has the edge. The most flow rate available in Takagi heaters right now is 10 GPM for a temperature rise of 30-degrees.

Noritz, on the other hand, can deliver as many as 11.1 GPM. This powers as many as three taps, appliances, or showers at the same time. Noritz is, therefore, an excellent choice for big families.


Takagi heaters are less expensive than Noritz heaters. If you’re trying to save money, Takagi is the way to go. However, there isn’t much of a difference.

Temperature Monitoring

Temperature monitoring is a unique feature of Takagi heaters. Heaters can be set to provide only the amount of heat necessary to reach a certain temperature.


Takagi heaters tend to be used indoors, while Noritz heaters can often be located both outside and inside.

Green Technology

Noritz water heaters use green technology, significantly reducing carbon emissions.

Furthermore, they use recyclable building materials, making them environmentally friendly.

Final Verdict

That concludes our Takagi vs Noritz assessment. It should go without saying that every water heater is different. Noritz and Takagi, on the other hand, are both fantastic picks.

Take a close look at the list above to see which option best suits your needs.

Leave a Comment

Your email address will not be published. Required fields are marked *