Navien Water Heaters

Everything you need on Navien Water Heaters, including model details, industry rankings and customer reviews, all in one place.

Navien Water Heater Overview

Navien, Inc. is headquartered in California and produces condensing tankless gas water heaters and condensing combi boilers in the United States and Canada. Navien is owned by Kyung Dong Navien, with global headquarters in Seoul, South Korea. Kyung Dong Navien had sales of approximately $612 million in 2017.

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Consumer Reviews of Navien


  • Very Satisfied
  • Somewhat Satisfied
  • Neutral
  • Somewhat Unsatisfied
  • Very Unsatisfied
  • #19 of 51 Water Heaters
  • 18.18% of customers recommended

Reviews by Water Heater Series


Corporate History

Kyung Dong Machinery Co, Ltd. was founded in 1978 in Seoul, Korea. The company name was changed to Kyung Dong Navien Co., Ltd. in 2006. Also in 2006, Navien, Inc., was established, with headquarters in Irvine, California, to provide new North American markets for KD Navien. Navien also has regional offices and training facilities in New Jersey and Ontario. KD Navien exports HVAC products to over 30 countries worldwide.

Product Lines

Navien offers 3 series of condensing gas tankless water heaters: the NPE-A, the NPE-S, and the NR. Each is designed for indoor or outdoor installation and residential or commercial use. Every model of Navien tankless water heater is Energy Star rated.

The company's line of gas combi boilers includes the CH-ASME series, which is for indoor installation only, and the NCB series, which is for residential use only. Each series consists of three Energy Star rated models.


Navien provides a 15-year heat exchanger, 5-year parts, and 1-year labor residential warranty on water heaters. When used for commercial purposes, the warranty is 10 years on the heat exchanger and 5 years on parts. The warranty on the NCB combi boiler is 10-year heat exchanger, 5-year parts, and 1-year labor. The warranty for the CH-ASME series of combi boiler is 10-year heat exchanger and 5-year parts.

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Navien Water Heater Reviews

Showing 1-5 of 11 reviews

"Lousy service"

1.0 rating
Very Unsatisfied

The unit had a part fail under warranty. Navien refused to accept plumbers signed invoice showing problem. They demand that the plumber call them in person or refuse to replace the part. This is the unit's second breakdown in 5 years and it requires extensive maintenance every year. Low-quality unit and low-quality company.

Daniel W

Tacoma, WA

"Would never buy"

1.0 rating
Very Unsatisfied

I would never buy this water heater again. They will not honor the warranty. The pump in it gave out in 6 months.



"Don't do it"

1.0 rating
Very Unsatisfied

Please look elsewhere for your tankless. Unit I bought 5 years ago crapped out, local plumbing contractor worked with Navien techs for days. Navien kept making recommendations, and sending parts, the most expensive of which were at my expense. Finally they determined the unit was defective, and had to be replaced. When I contacted Navien due to the excessive hours, (and my money) put into this. Amanda Montiel and her tech, Eric, determined they had made "no mis-diagnosis" and all of this was normal process. Amanda kept blaming the issues on a "act of nature" One of their many guesses was a possible power surge. No one could ever confirm this, but it is possible, (although the issues started before a power outage). This gave her a "out", at least in her mind, and we were on to "we can't control lightning". Mistake after mistake, but no responsibility. Stay away !

Michael Murphy


"February 2016"

1.0 rating
Very Unsatisfied

I have had this unit for 18 months and am going to have it replaced with another brand. It has not operated properly since installation. I have spent over $1500 for servicing. Even though Navien has shipped parts for free the cost of constantly replacing them is out of hand. I would not recommend Navien under any circumstances.

Ron D.

Apalachicola, FL

"High labor costs"

1.0 rating
Very Unsatisfied

It only lasted 2 years. Although unit was covered under warranty, we were stuck with a $1400.00 labor bill. We could have bought a 40 gallon hot water heater, had it installed, paid the difference in gas to run it and still come out ahead. No saving if Navien only lasts two years instead of the 15 years it is warranted for. Jury is still out but so far it's a hunk of junk.

Susan Von

New Jersey

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