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Takagi Gas Tankless Water Heater Review [Model: T-H3-DV-N]

Takagi T-H3-DV-N

If you ever considered buying a tankless water heater, then you know how much more expensive they are than traditional water heaters. The price can be intimidating, and many people just give up the idea after checking the price tag. We hope that this Takagi gas tankless water heater review will help you realize its value.

Our Rating
Takagi Gas Tankless Water Heater Review

What we Liked:

  • Energy Efficient
  • Advanced Safety Features
  • High Quality
  • Superb flow rate

What we Disliked:

  • Only for indoor use

There are many tankless water heaters on the market, but not all of them have the same features or great reviews like Takagi T-H3-DV-N.

According to the manufacturer, it is suitable for both residential and commercial use. It is perfect for beauty shops, and even small restaurants.

If you have a big home, it is perfect for you too. You can rest assured, as “endless hot water” isn’t just a phrase made to increase sales, but a fact.

This tankless water heater can easily support three to four showers. Furthermore, it preserves water and energy at the same time, which will save you money in the long run.

You can expect your electricity bill to be around 30% lower than before. 

If you are concerned about safety, you should know that this tankless water heater has computerized safety features that deal with potential problems before they become real issues.

You won’t have to worry at all because this is a high-quality product.

Editor's note: While we are during research on this particular model, the price turns out to be worthy. One of the most obvious fact is that this water heater will be more reliable in the long run, and they are way more cost-effective than regular heaters.

Key Features

Numerous features made this heater one of the most popular tankless water heaters today. To learn more about those features, keep reading. 

1. High Flow Rate

The T-H3-DV-N provides a staggering 10 gallons per minute (gpm). Just to compare, an electric heater can deliver two to four gallons per minute.

We hope that it is now clear that you will literally have endless hot water, whenever you want it.

2. Natural Gas

This heater runs on natural gas, so heat exchangers and internal burners start working as soon as cold water is detected.

You would expect fumes and vents because of the live flame, but a state-of-the-art condensing system does its magic.

3. An Amazing Water Condensing System

Steam condensation takes place inside of a combustion chamber. When the water is produced, the element goes out of the drain. The procedure saves more energy and makes less mess.

4. Safety

As we mentioned earlier, computerized safety features will keep you safe at all times, so you don’t have to worry about firing up your heater.

Takagi water heater troubleshooting, freeze control, surge protection, and overheating management are all included. Furthermore, all components are lead-free, for your safety.

5. Multiple Units

This tankless water heater can be connected to various units. To be precise, more than three, or even four, units shouldn’t present a problem.

6. Durability and Efficiency

This high-quality product will last for a really long time, and it is a sound investment. In addition, if you are eco-friendly and wish to save as much energy as possible, this heater is the best way to do it.

7. The Size

Weighing only 60 Lbs, this tankless water heater is easy to transport, and it doesn’t take up too much space. Most people just install it where their old heater used to be.

The Pros and Cons

Most users are very satisfied with the product. Some of the most cherished advantages include the following:


  • Simple Installation
    The heater comes with accessories and a Takagi tankless water heater manual, so you won’t have to buy any additional parts in order to install it.The setup shouldn’t be too difficult, but consider hiring a plumber if you are not an expert.
  • Durability
    Existing owners claim that they have been using the product for many years, and haven’t encountered any issues.This tankless water heater is really one of the most high-quality ones on the market.
  • You Can’t Run out of Hot Water
    No matter how much hot water you need, this product will deliver. Even people who live on big properties claim to be satisfied with the water supply.Bear in mind that the heater is connected to various units (showers, dishwashers, faucets, bathtubs, etc.), but manages to provide endless hot water nevertheless.
  • No Gas Exhaust
    No heated air will come out of the heater while you use it, so you won’t be needing fancy vents. It’s truly revolutionary.


  • The Price
    This product comes with a hefty price tag, there is no doubt about that.Although we think it is worth it, some people consider it too expensive.
  • The Repairs
    If your heater happens to stop working, the manufacturer won’t be in charge of the repair. The company can provide spare parts, but you will have to do the rest on your own.Not to mention that hiring a professional will result in additional costs.
  • Decreased Performance in Cold Climates
    The amazing GPM can be affected by cold weather conditions.This means that the heater can deliver hot water to more than four units in warm climates, but less in colder climates.

So, are you impressed with the design and features of this model? If not, you can also check on other brands listed below:-

Where Are Takagi Water Heaters Made

To get a better insight into the quality and tradition of the brand, let’s explore. The Takagi brand has delivered innovative hot water solutions for over 60 years.

Their products are sold only by plumbing wholesalers and contractors. Not only do Takagi’s heaters provide hot water wherever it is needed, but also do it while saving energy.

If you are interested in brands other than Takagi, check out this post.

Takagi is the first company which produces tankless water heaters (specializing in tankless-only products) that entered the North American market.

With its dedication to protect the environment and keep families safe, Takagi produces innovative, high-quality, and eco-friendly, tankless products. The brand’s ultimate hope is to reduce global warming.

Another interesting feature with this Takagi model is, it can also be used for radiant floor heating.

If you are wondering where Takagi water heaters are made, we’ll tell you all about it. Takagi has offices in California, New Jersey, Tennessee, and in Canada.

The products are available nationwide, through plumbing supply warehouses.

Final Verdict

Takagi T-H3-DV-N Review

Our Rating

Our verdict, if you need endless hot water delivered to multiple units in no time, this is the best electric tankless water heater for you. It is, without a doubt, one of the most powerful and reliable devices on the market.

There is no way you will ever be left without hot water with this device. Furthermore, it is great for families, since it has multiple safety features.

Many Takagi gas tankless water heater reviews from existing owners can be found on Amazon, so be sure to check them if you need further convincing.

Finally, if we were to rate the device, despite some minor flaws it has, it would get 5 stars from us. It is indeed hard to find a better choice; we dare to say that this product has it all.

    Verner Ellen

    Hi, my name is Verner Ellen. I am a homebody whose interest is in getting the best home tools and equipments to help with the the everyday house chores. I also love fitness, cooking and grilling. Maintaining a clean and comfortable home is my lifelong passion.

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