Noritz vs Navien Tankless Water Heater

Noritz vs Navien Tankless Water Heater – Comparison in 2023

While looking for tankless water heaters, you’ll encounter many alternatives that offer plenty of promises to satisfy your needs. Some of those are Noritz and Navien, two brands that have been on the market for quite some time now.

The Noritz vs Navien tankless water heater is a discussion that people still have up to this day. Some prefer Noritz, while some others prefer Navien. But, which one should you choose?

In this article, you’ll find what you need to know about the heaters produced by these two brands. Then, you can make the decision yourself.

Noritz – A General Look

Noritz is a less popular alternative to Navien. The differences are many, and you can quickly tell because Noritz offers more affordable products than Navien.

Despite being less popular, it doesn’t mean that Noritz is the worse brand. It’s a manufacturer that does the best with what it has, and it manages to create reliable appliances with high durability.

But, why would you consider Noritz products? For the same reason we mentioned before: the price. Even if you’re working on a low budget, you should be able to find one of these heaters available at a low price.

Performance – Good, But Not the Best

Noritz NR981-SVNG

If we want to have a clear look at what these heaters can do, we have to use one as a reference. Let’s review the Noritz NR981-SV-NG, shall we?

The NR981-SV-NG is a Noritz heater with a capacity of 9.8 GPM. To operate, it requires the use of natural gas, and its overall weight is 54 pounds.

That weight sounds like a lot, but it isn’t the heaviest appliance when compared to other brands. This heater is easy to handle during the installation and after that too if there’s ever the need to do any repair.

Noritz heaters are suitable for households with few or many members. The NR981-SV-NG delivers hot water around 9.8GPM, but other models work at 11GPM too.

Either way, these appliances often require more electricity, and their efficiency rating is way lower than the average Navien heaters.

Features – Lacking in Innovation

If you take a closer look, you’ll quickly notice that Noritz heaters aren’t the most innovative out there. In fact, in most cases, you’ll have to read the manual to understand how they work and how to operate them.

Not everything’s bad, though. The warranty for the average Noritz heater goes beyond the ten years, allowing you to get assistance from the manufacturer if needed.

Navien – Ultra-Efficient Tankless Water Heaters

Navien, as a brand, has been active for many years now. It was the first brand to introduce consumer-grade water heaters in the market, and as such, it’s a company with a pretty good reputation it must protect.

So far, Navien has succeeded as a tankless water heater manufacturer. Its heaters have an average rating efficiency above 90 percent, which is far superior if you compare it to products from Noritz and other brands too.

Coming from South Korea, Navien continues to provide high-quality appliances up to this day. Besides heater, the company also produces HVAC systems and many more home equipment.

Performance – Excellence at Its Finest

With an average rating efficiency of 97%, homeowners can expect nothing but excellence while using Navien’s heaters. They feature stainless steel construction, and it uses electricity wisely to heat the water.

A higher efficiency rating means that Navien heaters are capable of using less energy to produce more hot water. Saving energy not only does it mean that you save some extra money, but it also makes these heaters environment-friendly.

Navien heaters also surpass other brands, including Noritz, in terms of how much they produce.

While other heaters provide around two or three gallons of hot water per minute, Navien heaters can produce 10 gallons per minute, approximately.

Features – One for Everyone

Navien heaters are linkable, meaning that you can set up multiple of these appliances to work simultaneously. Of course, not every household would require it, but having this possibility available comes very handy for commercial purposes.

Unlike Noritz, Navien heaters offer a digital interface that most people would understand quickly.

Making changes and adjusting the system of the heater is not only possible but also very easy. Some of the things you can do are to change between Celsius and Fahrenheit degrees.

Biggest Differences Between the Brands

After reviewing both brands separately, now it’s a good time to compare Noritz VS Navien to see which one comes on top.


  • Navien heaters deliver high efficiency, reaching around 97% for most of its products. These appliances are great to save energy, money, and they’re eco-friendly too.
  • Noritz heaters, on the other hand, have a lower rating efficiency that reaches around 90%. These heaters are still good, but not when compared to Navien.

Is It User-Friendly?

  • Navien heaters remain up to date, offering modern features like digital controls that are very intuitive for people.
  • Noritz heaters have a traditional design. You’ll get them to work eventually, but they’re harder to set up and operate. Unless you know what you’re doing, Noritz appliances may be a challenge.


  • Again, Navien takes the winner spot when it comes to design. Heaters from this brand are good-looking, featuring a high-end appearance that makes them blend well with most decorations.
  • Noritz appliances aren’t that appealing to the eye. These heaters stick to a conventional look that is alright, but nothing that catches your attention.


  • If you want a Navien tankless water heater, you must be ready to pay a high price. These heaters are probably among the most expensive available.
  • Noritz heaters are more affordable than Navien.


The Noritz VS Navien tankless water heater is a debate that ends quickly once you’re fully aware of what each brand offers.

Undoubtedly, Navien heaters are superior to heaters produced by most brands, including Noritz.

But, at the end, which one to buy is a decision that is only yours to make. You know what their differences are, so now you’re in a better position to pick the one you need.

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