Noritz Tankless Water Heater Review 2021 – Read Guide Before Purchasing?

We are frequently asked about the best Noritz tankless water heater currently available in the market, and it is a difficult question to answer.

When you say “best,” do you mean the most pocket-friendly or the most energy-efficient?

Do you want the most powerful machine with the highest flow rate or a device that can be deployed indoors or outdoors?

Are you ready to invest more for a low NOx system?

Noritz is a renowned water heater manufacturer. They launched the first tankless electric unit in 1981.

Since then, they have been crafting premium quality, highly energy-efficient, and affordable heaters for the average consumer.

In this guide, we will review in detail some of the most widespread models obtainable by Noritz.

Our thorough article will help you get a better idea of what exactly you are acquiring before making the final purchase. 

Noritz Tankless Water Heater Review

Noritz NR111 SV NG9.8

Noritz NR111-SV-NGFeature:

  • Endless hot water
Noritz NRC66DVNG Indoor9.6

Noritz NRC66DVNG Feature:

  • Comes with a 6’ power cord
Noritz EZTR40NG9.5

Noritz EZTR40NGFeature:

  • Armed with direct electronic ignition
Noritz NRC111 DV NG9.5

Noritz NRC111-DV NGFeature:

  • 93% energy-efficient tankless condensing heater
Noritz NR50ODNG9.4

Noritz NR50ODNGFeature:

  • Perfect for both indoor and outdoor applications
Noritz EZ98DVNG9.4

Noritz EZ98DVNGFeature:

  • 97% energy-smart
Noritz NRC71DVNG9.3

Noritz NRC71DVNGFeature:

  • Limitless hot water
Noritz NR66ODNG9.3

Noritz NR66ODNG Feature:

  • 12 years heat exchanger, 5 years parts, and 1 year labor warranty

1. Noritz NR111-SV-NG

Are you looking for a Noritz tankless gas water heater with the highest GPM?
Then Noritz NR111-SV-NG standard indoor vent is the device you will want for your residence.
It provides a great 11.1 GPM. This staggering flow rate makes it stand out among competitors, not just Noritz models.

Best Overall
Noritz NR111 SV NG

Noritz NR111-SV-NG


  • Endless hot water
  • Compact and eye-catching design
  • Lightweight and reliable heater
  • Sustained strength

It can effortlessly supply warm water for 4 to 6 bathrooms at once.

Furthermore, it is so powerful that it can also be used in commercial areas.

We loved it because it is ultra-lightweight and easy to deploy.

You would wonder it would be heavyweight when it can do a lot of things, but it just weighs 44 lbs.

It is designed for indoor installation so that you can hang it anywhere in the house.

However, make sure there is appropriate ventilation to the outside air.

Besides, its downside is that it is extremely costly, so consider the price before deciding to buy it.

We assure you it will certainly pay off in the long run.


  • Item Weight: 44 Pounds
  • Product Dimensions: 10.7 X 17.6 X 26.6 Inches


  • Equipped with modern technology
  • Well-suited for residential and commercial areas
  • Produces 11.1 GPM for the whole house usage


  • Pricey

Note: If you have a large family and need a higher GPM heater, this unit is the best choice for you, but only if you can afford it.

2. Noritz NRC66DVNG

The Noritz NRC66DVNG is one of the top-rated Noritz instant hot water heaters.
This incredible product weighs just 39 pounds, so it is extremely lightweight and easier to carry.

Great Value
Noritz NRC66DVNG Indoor

Noritz NRC66DVNG


  • Infinite warm water
  • Highly energy-efficient
  • Low emission rate
  • Remote thermostat
  • Comes with a 6’ power cord
  • Can be vented with schedule 40 PVC pipe

You can conveniently mount it on the wall in your house for your use.

It features a decent propane and gas fuel system. It contains carbon reduction technology, so the emission is negligible.

You can install it indoors to protect it from harsh weather conditions.

If we talk about its efficiency, it consumes 120000 BTU units.

For a medium-sized family, these measurements are excellent for regular use.

Moreover, it has a thermostat adjustable option.

This feature enables you to modify the temperature at an interval of five degrees. It means you can use this appliance in any climate.


  • Product Dimensions: 6.7 X 13.8 X 23.6 Inches
  • Item Weight: 11.42 Pounds


  • Built-in controller
  • Flow rate up to 6.5 gallons per minute
  • Lightweight


  • Not suitable for a large family

Note: The Noritz NRC66DVNG is a perfect choice for a medium-sized family.
It has a high energy-efficiency rating, so it will aid you to save a significant amount on gas bills.

3. Noritz EZTR40NG

The Noritz EZTR40NG is an advanced version of a regular 40-50 gallon unit.
It has the capability to meet the hot water demands of a full house.

Premium Choice
Noritz EZTR40NG

Noritz EZTR40NG


  • Low NOx
  • Armed with direct electronic ignition
  • Polyester coated durable steel casting
  • Equipped with a K-copper heat exchangers

What makes it stand out is its integrated safety systems.

It is armed with freeze protection, overheat prevention, flame sensor, fan rotation detector, and many other systems that safeguard it from operational problems.

The preset temperature controls of this lightweight and conspicuous unit supply you with water at your desired temperature.

In addition to that, its compact design with a glossy and sophisticated finish makes it look stunning when fixed on the wall inside your house.

It does not only provide you limitless hot water but also adds comfort to your house.

It works smoothly, but it is better to get it serviced by an expert frequently to ensure it is in top form. 


  • Product Dimensions: 27.2 X 18.3 X 9.4 Inches
  • Power Source: Gas
  • Material: Metal


  • High-efficiency
  • Designed for indoor deployment
  • Temperature controls to preset the desired temperature
  • In-built safety systems for smooth operation


  • High price
  • Requires regular flushing for cleaning
  • Creates an ignition problem after some time

Note: If you want to replace your tank water heater with a tankless one, Noritz EZTR40NG is undoubtedly an outstanding option you should take into account.
It comes at a hefty price, but it is a worthwhile long-term investment that will pay off its own price in a few years.

4. Noritz NRC111-DV NGater

The Noritz tankless water heater review is a superb choice for folks who want to replace their existing 50-gallon gas containers.

Noritz NRC111-DV NG

Noritz NRC111 DV NG


  • 93% energy-efficient tankless condensing heater
  • Self-diagnostic onboard computer system
  • Low NOx emission rates
  • Equipped with copper and stainless steel heat exchangers

This machine is more efficient and can easily facilitate four bedrooms and three bathrooms in the house. It creates 8.4 gallons per minute.

Another noteworthy feature is that you can connect it to a recirculation pump to reduce the amount of time the water takes to reach the tap.

The Noritz electric tankless water heater features two heat exchangers.

The primary heat exchanger is made of copper, and the secondary one is made of stainless steel.

Copper is an extraordinary conductor, whereas stainless steel is great at absorbing heat.

Both materials ensure that the water flow remains at your preferred temperature.

When hot water goes into your system, less energy is used.

Many people don’t think much about the amount of carbon dioxide that a water heater emits, but the efficiency of this high-quality appliance lessens NOx emissions by 93%.

The energy-star certified unit can be vented using PVC pipes.


  • Item Weight: 84 Pounds
  • Item Dimensions: 30.75 X 23 X 14.5 Inches


  • Heat exchanger made of 25% thicker commercial grade K-copper
  • Produces 8.4 gallons per minute
  • Can be attached with a recirculation pump
  • Attractive design


  • Difficult to install
  • Must be descaled annually

Note: The Noritz NRC111-DV NG is an optimal choice for a medium and large-sized family because it can deliver 8.4 gallons per minute.
It means you can use hot water for multiple tasks at the same time.

5. Noritz NR50ODNG

The Noritz NR50ODNG boasts hot water technology that offers you mind-blowing outcomes.

Noritz NR50ODNG

Noritz NR50ODNG


  • Nonstop warm water for the full house
  • 91% energy-smart
  • Low nitrogen oxide emission
  • Perfect for both indoor and outdoor applications

Its energy efficiency rating is 91% that makes it a great product.

Besides, this unit has low emissions, so that you can install it indoors.

It has minimal nitrogen oxide emission compared to other tankless heaters available out there.

It is eco-friendly because of the carbon reduction technology.

The lightweight Noritz tankless hot water heater has 12 years warranty on the heater and five years warranty on the interior parts.

Furthermore, the brand offers one year warranty on the labor.

If you want, you can acquire maintenance service from the company.


  • Item Dimensions: 10.7 X 17.6 X 26.6 Inches
  • Item Weight: 33 Pounds


  • 5 GPM flow rate
  • Capacity 120000 BTU
  • 12-year warranty on the heater
  • Lightweight and durable


  • Expensive

Note: If you are searching for a great model for a large family, then Noritz NR50ODNG tankless appliance is a decent purchase.
It is eco-friendly and can be installed indoors and outdoors.

6. Noritz EZ98DVNG

This Noritz water heater review features the highest proficiency when it comes to performance.

Noritz EZ98DVNG

Noritz EZ98DVNG


  • 97% energy-smart
  • A flow rate of 9.8 GPM
  • Minimum gas input of 18000 BTU
  • Maximum gas input of 180000 BTU
  • Top mount body structure

Its energy efficiency rating is 97%; it means it works faster and effectively.

If we talk about its construction, its size seems to be quite big. So, you can expect to obtain the maximum amount of perfectly warm water.

On the other hand, it features a top mount body structure.

If you are speculating about replacing your older tank device, you can do it in two steps.

Best of all, this product is super-easy to maintain and clean.

The brand offers 25 years warranty on the heat exchanger. Also, it generates up to 9.8 gallons per minute, so it is truly a superb choice.


  • Item Dimensions: 13 X 18.5 X 28.3 Inches
  • Item Weight: 81 Pounds


  • Versatile applications
  • A 25-year heat exchanger warranty
  • Suitable for indoor installation
  • Easy to install


  • Price is very high

Note: If you are looking for a highly energy-efficient water heater, then invest money in Noritz EZ98DVNG without thinking too much.
It is very expensive, but it is worth it because you can effortlessly attach it to up to 8 fixtures in your residence.

7. Noritz NRC71DVNG

This Noritz tankless gas water heater comes with a high flow rate of 7.1 gallons per minute.
It produces water promptly, so we feel this flow rate is pretty good.

Noritz NRC71DVNG

Noritz NRC71DVNG


  • 89% energy-efficient
  • Modify the temp at an interval of 5 degrees
  • Low NOx emission
  • Compact design
  • Limitless hot water

You can be sure to obtain seamlessly warm water within two minutes.

It runs on natural gas and has carbon reduction technology, which is exclusively intended for lowering the nitrogen oxide emission from the heater and gives excellent results.

You can expect to take advantage of this environment-friendly product for the long term.

Speaking of its efficiency, the Noritz tankless water heater review consumes 157000 BTU units.

Therefore, it is a decent product for medium-sized families.

Additionally, its energy efficiency rating is 89%, making it a valuable purchase when it comes to using the machine for numerous hours a day.

We liked it because it boasts an adjustable thermostat.

It is set at 120 degrees Fahrenheit by default. You can alter the temp at an interval of 5 degrees.  


  • Item Dimensions: 6.7 X 13.8 X 23.6 Inches
  • Item Weight: 41 Pounds


  • Can be vented with PVC
  • Provides warm water in just 40 seconds
  • Works greatly
  • Indoor installation
  • Capacity 157000 BTU


  • High price

Note: If you can afford to buy an expensive water heater with numerous cutting-edge features, we would recommend you invest your hard-earned money in Noritz NRC71DVNG without any hesitation. It is an optimal choice for day-to-day usage.

8. Noritz NR66ODNG

The Noritz tankless hot water heater works on gas that can exceed any large-sized tank-style device in terms of price and efficiency.

Noritz NR66ODNG

Noritz NR66ODNG


  • 81% energy-efficient
  • Designed for outdoor installation
  • A flow rate of 6.5 GPM
  • 12 years heat exchanger, 5 years parts, and 1 year labor warranty

Its integrated display screen allows you to adjust it according to your needs.

Besides, it features a lightweight and compact design, so you can take it with you anywhere you want.

The Noritz NR66ODNG arrives with manual and user-friendly guidelines.

So, if you want, you can install it yourself; otherwise, you can employ professional services.

By installing it yourself, you can save a lot of money.

This powerful appliance has the ability to sustain a big house’s demand for warm water.

It is an outdoor unit, so you don’t have to worry about deploying vents. It works with both gas and propane. 


  • Product Dimensions: 10.7 X 17.6 X 26.6 Inches
  • Item Weight: 36 Pounds


  • Easy to operate
  • Lightweight
  • Integrated window display
  • Don’t need vents
  • Easy to carry and use


  • You may have to hire an expert plumber for installation
  • Consumes a lot of fuel
  • Not designed for large scale applications

Note: Noritz NR66ODNG tankless water heater offers great value for money.
It arrives with a decent energy-efficiency rating of 81% and works in a great way.
The high performance and low NOx emission make it a remarkable pick for outdoor use.

How To Buy The Best Noritz Tankless Hot Water Heater?


The most significant thing that you have to take into account is the sturdiness and construction of the unit.

Check for the quality of the materials that have been utilized to manufacture the internal parts and heat element of the device.

If it is created of rust-proof materials, they are much more resilient than other materials.

Flow Rate

If you want to run multiple faucets, then don’t forget to consider the flow rate.

When the pressure is high, or there is an urgency hour, the appliance supplies warm water to multiple fixtures.

A higher flow rate means your shower will not be interrupted anymore.

The flow rate can be between 3 GPM and 11 GPM, depending on the water pressure in your area.   


The majority of Noritz heaters are equipped with safety technology and operation mechanism.

You have to assess how easy it is for you to use the heater for your residence.

You have to determine whether you want to buy an outdoor or indoor unit.

You can pick any device based on your needs because the energy efficiency rating of Noritz products is more than 90%.


Before buying an appliance, you must consider the size variations available.

Most units are designed to satisfy the full house hot water needs.

But the size will primarily be reliant on what your provisions are.

The size differs from an assortment of factors such as capacity, dimensions, and features.

You also have to confirm that there is enough space available for indoor deployment.


Noritz is one of the most trustworthy weather heater companies out there.
It was established almost 60 years ago but has not earned recognition that it is worthy of.
But this has not stopped it from manufacturing dependable, affordable, high-performing, and innovative products.
It is inventor of tankless devices in 1981. They have never compromised on the quality and always offer the best products to their consumers.
Now, you know everything about the brand and their products; you can pick any of the heaters mentioned above that suits your needs and helps you save a lot of your money on bills.

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