Rinnai vs. Navien Tankless Water Heater Comparison By Consumer Reports

If you are planning to purchase a water heater for your home, a tankless water heater can do you a lot of benefits. Although this system costs a lot more than a tank water heater, it has so many advantages which have made a lot of people to opt for it. This product is efficient and produces adequate water for you and your household.

Having read a quite number of tankless gas water heater reviews, two leading brands, which are Rinnai and Navien, are known to be the best manufacturers. However, choosing between these two brands can be challenging, considering the fact that both produce unique models.

You need not worry as this article has been written to help make the right choice between these two.

Rinnai Water Heater

Before going entirely into the comparison of these two brands, it is vital to have some idea about each brand and what characterizes them. Rinnai is a Japanese company that was established by Hidejiro Naito in the 1920s. It is a Japanese multinational company that is located in Nagoya, Japan.

Although it has been in existence for an extended period, Rinnai has been rated for building modern and unique water heaters that compete and even work productively more than many contemporary companies.

This brand is known for producing gas appliances which include energy-efficient tankless water heaters, home heating appliances, kitchen appliances, gas clothes dryers, and commercial-use equipment such as rice cookers, grillers, fryer, and salamanders.

With Rinnai, you would get a compact size water heater that would not consume too much space. Likewise, this brand uses the latest advancements in technology to manufacture its different products.

Do you know what? Rinnai water heaters come with a Wi-Fi connection and at the same time a remote control that allows users to operate these products without any difficulties.

See also: Best Handheld Shower Head Consumer Reports

Navien Water Heater

Although this brand is not as old as Rinnai water heater, it is one of the oldest manufacturers having been in existence for over 30 years now. Navien was founded in the 170s, and it has its base located in South Korea.

This brand is known for producing a wide range of electronics devices such as HVAC systems, water heaters, and boilers, among others.

One of the major features that this company possess is that it manufactures efficient and environment-friendly water heater designs. Unlike other water heaters that can provide about 2 to 3 gallons of heated water per minutes, this brand’s products can generate about 10 gallons per minute or more.

Comparison of Rinnai and Navien

With any of these two brands that you choose, you would enjoy an effective and efficient water heater that would give your household maximum satisfaction.  However, since you can purchase from these two brands are a single time, here are some features to look in for and some factors to put into consideration before opting for one.

High Efficiency

When it comes to choosing highly efficient products, you will never be disappointed with these two brands. Both have outstanding heat output that it is not easy to find in other manufacturers.

For Rinnai, you would enjoy up to about 40% savings on energy cost. Likewise, this brand also provides you with a high energy efficiency rating from about 80% to 90% that you would get base on the type of product you get.

For Navien, you would enjoy a digital interface of which you can always make changes with just a touch on the button. Likewise, this brand would provide you with a highly efficient tankless water heater that would help you reduce the cost of the product.


Both Rinnai and Navien companies produce units that are easy and simple to install. Rinnai models, most of the time, come with venting options that would help you in the installation of this unit both on the inside and outside wall.

Navien products offer you a one-person installation with its mounting and bracket system, thereby making the installation procedures simple.


These two brands have become most users’ choice not only because of their efficiency but also because of their attractive designs.

Apart from the fact that Rinnai models come in a compact design, they also feature digital controllers that make operation easy and fast.

With Navien water heater, you would enjoy a unit that would not take a lot of space for installation.