Navien Tankless Water Heater Reviews

Navien Tankless Water Heater Reviews

navien tankless water heater reviews

All Navien tankless water heaters are Energy Star rated for efficiency, something no other manufacturer can say about its product lineup. The Navien condensing water heaters trap more heat from the combustion gases and use it to pre-heat incoming water, leading to far less wasted energy. We’ve reviewed Navien and its products before. Here’s an overview of why some think that Navien tankless water heaters are the best on the market.

Navien Tankless Heaters are Very Efficient

All Navien models are Energy Star rated, and they’re at the upper end of the spectrum. For example, the CR/CC Series water heaters have energy factors as high as .98. See articles on this site about Rinnai and Noritz tankless water heaters to compare the efficiency levels of each brand. Navien will reduce your energy costs every month. If you install one to replace a storage-tank water heater, the Navien will use up to 45% less energy while delivering on-demand hot water.

Residential and Commercial Models are Available

Whether you need a tankless water heater for your home or business, Navien has one for you. For residential use, choose whole-house models with maximum delivery that ranges from 8.4 GPM to 11.0 GPM, suitable for high-demand applications. The same volumes are available in commercial models, along with heavy-duty heat exchangers.

Tankless Water Heaters are High Quality

There’s a reason Navien products are pricey—they are among the highest quality of any brand. They rank very high in consumer-generated ratings for performance and durability. When you choose a Navien, you’ll get the assurance of large amounts of continuous hot water whenever you need it. Navien shows confidence in its products by backing them with a very good warranty. The heat exchangers on residential units are covered for 15 years; all other parts have a 3-year warranty.


Navien is a part of any discussion involving the best tankless water heaters in the industry. They’re very competitive with the best from Rinnai, Takagi, Bosch, Rheem and Noritz. See our reviews of these brands to learn more details about what a Navien tankless water heater can do for you.

Recommended Articles

We have some articles that I would like to recommend to the readers.

Foundation Repair And Maintenance

We have described here the type of foundations, what is a foundation inspection and what should be included in a good foundation inspection checklist. We can discover problems in the foundation to make us ask ourselves if it is safe to live in a house with foundation problems and what entails a foundation repair, if it is covered by homeowners insurance and its costs.

To repair a foundation, the service provider requires an underpinning system using piers: push piers vs helical piers where helical piers are preferable for residential real estate objects, despite their costs. Also when you compare helical piers with concrete footings, we can determine that helical piers are more cost-efficient than concrete footings, in my opinion.

We have water in the crawlspace: I explain what to do when the crawlspace is flooded, if it is normal to have water in the crawlspace after a heavy rain, and the importance to perform a crawlspace waterproofing thereafter, normally by installing a vapor barrier.

I describe how to improve the air quality in the crawlspace and to accomplish this, I am reluctant to use lime powder in this article, where I explain the pros and cons, as I would be using lime powder only to avoid the dangers of raw sewage under house.

We discuss the sill plate replacement cost and how to avoid the outdoor sump pump freezing, because it happened to me once.

There are always new methods for repairing foundations. One of them that we investigate here is the Powerbrace foundation repair method.

Animals can be a problem when they live near the foundation: In the following articles we describe how to remove them and how to prevent them from digging and burrowing. The articles are about animals digging holes around the foundation or when they are burrowing below concrete, below a concrete slab, or between gaps in concrete footings, for example.

In regards to basements, I describe how to solve the hydrostatic pressure in the basement. I provide to you some reasons of why we will need a certified specialist to deal with a risky sewage backup in the basement because bacteria survives a long time in a contaminated sewage and also we discuss how to deal with a basement drain backing up in general and when it happens when flushing the toilet, something that is not a DYI project at all.


I explain here the process of concrete lifting or concrete raising, that can be done through mudjacking or slabjacking. We recommend the latter, which injects polyurethane foam.


There are some interesting articles here, in this Framing category. I refer to sistering floor joists, as a methodology to reinforce existing floor joists with some emphasis on sistering 2x6 floor joists or sistering with 2x8 instead, and about the building code for sistering joists, for sistering rafters, and the code for notching floor joists.

Water Heaters

About water heaters, we have a complete guide about water heater types and their installation requirements, about power vent water heaters, and venting in tankless devices, and I also explain in detail the difference between a mobile home water heater and a standard water heater. I also describe in detail how to remove the heating element without an element wrench using just a socket, and how to protect your water heater against the effects of hard water, and how to fix leaking.

We have some few reviews when a water heater falls into our hands, such as the Titan product portfolio, Navien lineup, the Titan N-160 reviews, the most praised by our readers, and the Rinnai R94LSi .

I study several water heater capacities and tested 20-gallon water heater units, and a comparison between point of use and tankless water heaters.

We open a tankless water heater to show how does it look like inside a tankless water heater.

After the lifecycle of the water heater is over, I reveal to you different options to proceed with its disposal.

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