Navien tankleswater heater Review

Navien Tankless Water Heater Reviews 2023

Navien Tankless Water Heaters

Ever since technologies are becoming smart and more developed, every gadget we find today is becoming much smarter and more effective. One such device is the Tankless Water Heater! They not only save your time but is also much effective in space-saving and maintenance. Well, I’ll assume that you are looking for the best Navien Tankless Water Heater Reviews that are available.

Since there are so many products already available in the market today, it has become very important for us to choose the right product available. There are so many parameters to consider before you choose. Here is a complete guide on the Navien Water Heater Reviews that will help you to get the best results.

If you need a good amount of water and especially for long hours, the Navien Tankless Water Heaters come along with several options. Especially when it comes to buying a Tankless Water Heater for your regular use! You can even use both of them for your residential as well as commercial use.

So it can be obvious to say that a lot of people have always wished to buy the Navien Water Heaters for their use and it stands out to be great results. We’ll discuss the reasons why you should choose from the Navien Water Heaters Reviews.

1. Efficiency Factor

When it comes to condensing heaters, the Navien Tankless Water Heater is a top-notch product to choose from. The efficiency factor is for the Navien Water Heater is indeed very high and I will personally recommend the brand for the users.

The efficiency factor is defined by the units of energy consumption and the quantity of water that it can heat up in the least time. While checking the efficiency factor, we found that these Tankless Water Heaters can easily record an efficiency factor of 0.98. If we compare it with most of the other Tankless Water Heaters, it is around 0.82. 

2. Gas Emission

Another reason why most people do opt for a Navien Tankless Water Heater is because of its efficiency. Coming to the construction, there are two types of mechanisms used in the Navien Products that include Gas powered and electric tankless models.

The gas-powered models are generally more efficient and they have proper results that you can opt to take. When it comes to using the gas-based models from Navien, they are equipped with ECO Premixed Burners. So this will allow most of the heaters to produce a lower amount of CO and NOx gasses. In fact, the reduction is around 75%. 

3. Flow Rate

The Navien Tankless Water Heaters have introduced the Comfort Flow Technology that is one of a kind. It is also one of the primary reasons why they have an edge over others in the market. This feature comes to be very helpful when it comes to heating the water that is present.

Comfort Flow Technology is a smart heating process when it comes to reversing cold water in exchange for hot water. The water inside gets heated with a recirculation pump that influences to emit cold sandwich problems.

Top Navien Tankless Water Heater Reviews

1. Navien NPE180S Review

Navien NPE180S

The Navien NPE180S seems to be a great choice for people who are willing to use the product for regular use. Since the weight is only 67 pounds, there are no problems with installation at all.

Moreover, the product comes with a wall mounting option. So you can easily mount the product without any hesitation at all. It will take around 6-7 minutes for you to install the product and start using it. 

Coming to the specifications of power consumption, the Navien NPE180S can produce around 200 watts of power. However, the product seems to be a great pick when it comes to energy efficiency.

The Navien NPE180S can work in low energy consumption of 120 Volts electrical sources and generate almost 199000 BTU. This makes the product to be capable of delivering fast hot water.

The Navien NPE180S comes with an energy star rating that provides the efficiency of the product. We found that it has a 4-star energy rating that is capable of heating the water up to 140 degrees Fahrenheit with economic electricity consumption.

So you can always expect the product to have higher energy efficiency. As of now, the efficiency factor is just around 0.95 which makes the product great for your regular use.

Coming to the construction, the Navien NPE180S is made up of durable and lightweight materials on the body. Thus, it becomes very easy to travel with the product.

Apart from this, the interior components include a non-corrosive material that makes the product to be much more efficient to use. The coating present on the heating element prevents it from any type of limestone or sediment formation.

The Navien NPE180S seems to have a proper service warranty and high-quality components. The product features a 15-year long warranty on the heating component. This is certainly the highest in the class offering a lot of hype about the heater.

Apart from this, you can also get a 5-year warranty o the components inside and a 1-year warranty on the labor. The spare parts are always available on the market and have an efficient price as well.

The rate of flow for the Navien NPE180S seems to be another great factor. It has a high GPM of 8.4 which makes the product great to use. It supports an 8.4 GPM when you use the product at regular temperatures.

However, if you need hot water at a below temperature, the rate of flow increases to 9.5 GPM. This is certainly an added advantage for you to pick when it comes to choosing a regular water heater.


Fuel Type – Natural Gas
Flow Rate – 8.4 GPM
Energy Factor – 0.99
Installation Indoor
Capacity – 199900 BTU


Stainless steel components
15 years warranty on internal components
Decent flow rate


Starting the heater takes time
The price is a bit high

Bottom Line

If you are looking for an ideal product that includes the proper flow rate for your regular use, the Navien NPE180S can be a great choice. It is especially for small families who would have 7-8 faucets connected to the heater.

So you will never have to worry about the product for higher energy ratings. It consumes less and provides you with better maintenance.

2. Navien NPE-240A Review

Navien NPE-240A

The Navien NPE-240A comes along with a proper range of BTU units required for the product to operate. We found that the Navien NPE-240A has a wide range from 19900 to 199900 BTU units per hour to raise the temperature. Since it consumes very low power of electricity, the product is rated highly in terms of efficiency. The UEF in the case of both natural gas as well as liquid propane is just around 0.96.

When it comes to installation, the Navien NPE-240A is one such product that you will like to have. The weight is roughly around 82 pounds. However, the presence of lightweight material on the body makes it an ideal choice for most people to travel with the product. Moreover, the wall mounting option indeed allows mounting the heater when you are installing it on the wall. It is best for indoor use.

The product has a decent flow rate of around 8.7 GPM when it is around 45 degrees Fahrenheit. However, when the temperature is reduced to 35 degrees Fahrenheit, it generates around 8.7 GPM. So you will never have to wait for much time when you need instant hot water. It will take roughly around 5 minutes in chilly weather to get the procedure started. With PVC piping, the heat tends to stay for a longer time.

The product features some interior components which are effective in work. Most of these components are made up of stainless steel materials. This material is specifically meant for providing you with optimum results. So even if you stay in a hard water-prone area, the non-corrosive coating on the components inside makes sure that no sediments are being formed! It also prevents debris formation to a certain extent.


Fuel Type – Natural Gas
Flow Rate – 8.4 GPM
Energy Factor – 0.96
Installation Indoor
Capacity – 199900 BTU


Produces low NOx
High flow rate
An energy efficiency of 97%


Not ideal for extreme weather

Bottom Line

The Navien NPE-240A is a great pick if you are looking for a budget-friendly model. It is quite efficient when it comes to electricity consumption. The performance on chilly nights may be a bit harsh, but in this budget, you will consider the product to be a great choice.

3 Navien NPE-210A Review

Navien NPE-210A

The Navien NPE-210A includes durable materials which are very handy to use regularly. We found that the interior components are made up of high-grade stainless steel materials. This allows the heater to stay long and active for a better long life of the product. It also helps to provide proper protection from sediments and limestone formation on the pipeline.

Even if there are specks of dust, minimal maintenance will do the job for you. The product has some installation options which allow you to easily connect the product for both indoor and outdoor use. You can always mount the product.

However, the heater is a bit heavy when compared with the other heaters that are mentioned here. So you may need some external support when you are traveling with the product for a long time.

Coming to the specifications of the product, the Navien NPE-210A seems to come with a high flow rate which allows you to get fast heating. The product includes a flow rate of around 10.1 GPM which makes it eminent for you to use the product for long hours.


Fuel Type – Natural Gas
Flow Rate – 10.1 GPM
Energy Factor – 0.96
Installation Indoor
Capacity – 180000 BTU


The product is field convertible
You can use it for both indoor and outdoor installation
Has high GPM


It is a bit heavy

Bottom Line

When it comes to your regular use, the Navien NPE-210A seems to be a great choice for you. Moreover, the interior components are made up of high-grade elements which make it very useful for your regular use. It is a decent choice if you have 5-6 faucets connected to the product.

4. Navien NPE240S Review

Navien NPE240S Review

The Navien NPE240S comes with a great conception of a durable body and proper installation option. This also allows the user to have a long life for the product. We found that the product has stainless steel heating elements.

They also come with anti-corrosion elements that make it much easier for you to protect from any type of limestone or sediment formation inside the product. The stainless steel material is specifically used for the heated burner as well as the heat exchangers.

Coming to the efficiency of the product, the Navien NPE240S comes with high efficiency for its uses. We got to know that the energy factor is roughly around 0.97 which makes the product to be highly efficient to use regularly.

When it comes to unit consumption, we found that the product consumes around 199990 BTU. It seems to be quite decent for any high-performing water heater to use a good amount of electricity while heating the product.

The gas pipe specification is also a great feature. The product can easily use a 1/2-inch gas pipe as well as which allows the heater to work faster. Moreover, the presence of the 2-inch PVC venting also allows a smooth flow of gas through the vents. It is a great option for you to choose when it comes to choosing the proper flow of hot water. This feature allows the heater to use 60 cuts installation at a time. It is also responsible for the fast transition of the fuel to the burner. 

The Navien NPE240S includes a high flow rate that makes it very efficient for use when you have multiple faucets connected in your home. The product features an 11.9 GPM flow rate. When you have a big family and looking for top-notch options, the Navien NPE240S is a great choice.

Moreover, the energy efficiency added to the high Flow Rate makes the product to be efficient for your use. So even if you have multiple faucets connected with the product, it will not affect you much.

The Navien NPE240S comes with a complete warranty over most of the interior components that are present inside the heater. The Navien NPE240S includes a 5-year warranty on the interior components and a 10-year warranty on the interior components.

Apart from this, you can also get a 1-year warranty on the labor. Moreover, spare parts are available in the market for a long. So you will have to wait for a long if you wish to get the best results.


Flow Rate – 8.7 GPM
Energy Factor – 0.99
Installation Indoor
Capacity – 199900 BTU


Highly energy efficient
Great capacity
Interior materials are durable


The price is a bit high

Bottom Line

The Navien NPE240S seems to be a great choice when you need to opt for a product that is great for your regular use. It has a high flow rate along with an efficient energy factor that can give you the best results. So if you have a large family, it can be a top buy.

Frequently Asked Questions [FAQs]

Q1. Is Navien A Good Tankless Water Heater?

A1. It is obvious to trust a brand that is great to use when you are regular about it. Most of the products available in the category make sure that the interior components work perfectly.

It is always proper customer service provided to all the buyers who have attempted to purchase the products. If you decide to buy a product from the range of Navien Tankless Water Heaters, you’ll never be disappointed at all.

Q2. How Long Do Navien Tankless Water Heaters Last?

A2. Let’s be honest, every good product requires proper maintenance to last longer. When it is the case with Tankless Water Heaters, it becomes much more effective to maintain the product.
However, you can still expect any Navien heater to have a life expectancy of 20 years. The availability of a long warranty period makes it easier for any person to run the product regularly without any issues.

Q3. What Is The Best Tankless Water Heater?

A3. There are several Tankless Water Heaters available in the market today and many of them are at the top. However, products from Navien are always helpful for you when it comes to choosing a top-brand product. Still, you can always opt to choose the Navien NPE240S as a preferable choice.
It has a high GPM that allows you to get hot water faster and more effectively. Also, there are several features available for the product that makes it a top choice. You can also read our in-depth article on tankless water heater reviews.

Q4. What Temperature Should A Navien Tankless Water Heater Be Set At?

A4. The heating of water inside the heater and also the time required mostly depends on the groundwater temperature. At times, you may have to change the Navien Water Heaters according to the necessities and also the climatic conditions.
However, the default temperature is set up by 120 °F. Also, when you need to change the temperature of the product, make sure that all the hot water faucets in your home are closed. 


There are so many Navien Tankless Water Heaters already available in the market. Choosing the best one out of them is indeed a difficult job in hand. Of course, choosing the ideal product needs patience and hours of research. However, if you like the brand and still looking for a product that is present in the market, you can follow the post here. This guide on Navien Tankless Water Heater Reviews will surely help you to find the best product that you are looking forward to having.

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