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A Milestone Achieved Together

Already the leader in wall-hung boilers and gas condensing tankless water heaters, Navien has now been named the #1 manufacturer of all gas tankless water heaters (condensing and non-condensing) in North America. This monumental achievement is not just our own, but a testament to the dedication, hard work, and collaboration of our entire community — our employees, partners, and most importantly, our customers. We simply could not have done it alone.  

Thank you for being an important part of this journey. Here's to our shared success, and a future filled with more remarkable achievements — Together…We are ONE

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Navien ONE:
A Milestone Achieved Together

Already the leader in wall-hung boilers and gas condensing tankless water heaters, Navien has now been named the #1 manufacturer of all gas tankless water heaters (condensing and non-condensing) in North America. This monumental achievement is not just our own, but a testament to the dedication, hard work, and collaboration of our entire community — our employees, partners, and most importantly, our customers. We simply could not have done it alone.  

Thank you for being an important part of this journey. Here's to our shared success, and a future filled with more remarkable achievements — Together…We are ONE

Meet the Most Popular Tankless Water Heaters in North America

Navien is now the leading manufacturer of gas tankless water heaters and wall-hung boilers in North America according to BRG Building Solutions, an independent global market intelligence and data provider.

#1-Selling Brand
of Tankless Gas Water Heaters

Navien has already been recognized by BRG as the leading manufacturer of gas condensing tankless water heaters for 16 consecutive years, and as the leading producer of wall-hung boilers since 2012.

Now Navien has achieved an even greater distinction: the number one selling brand of all gas tankless water heaters (condensing and non-condensing combined) in 2023.

before and after replacing traditional tank style water heaters with best-selling tankless water heaters cascaded and common vented

7 Reasons Navien Tankless Water Heaters
Are Best-Sellers

Innovative technological advancements and consistent quality deliver the efficiency, reliability, and eco-friendly performance people want—along with endless hot water.

Our gas tankless water heaters boast premium features, including:

01

Ultra-high efficiency condensing technology

02

Stainless steel heat exchangers 

03

ComfortFlow® built-in recirculation pump and buffer tank

04

Optional NaviLink Wi-Fi remote control from your phone

05

Common venting and cascading multiple units with Ready-Link® technology

06

Built-in smart controls with Setup Wizard

07

Wide range of tankless sizes for every project 

Navien Featured Reviews

5-star review for best-selling tankless water heater4-star review for best-selling brand of wall-hung boiler
5-star review from a business for a best-selling brand of commercial tankless water heater5-star review for best-selling brand of tankless water heater
5-star review for best-selling brand of combi boiler5-star review for best-selling brand of gas tankless water heater

Explore Our Most Popular Tankless Water Heaters

NPE-A2 Series

NPE-180A2
Max Input: 150,000 BTU/h
Indoor or outdoor wall-hung
Residential/Commercial

ComfortFlow® Technology

Navien NPE-180A2 advanced high efficiency condensing tankless water heater
View model
NPE-180A2
NPE-210A2
Max Input: 180,000 BTU/h
Indoor or outdoor wall-hung
Residential/Commercial

ComfortFlow® Technology

Navien NPE-210A2 advanced high efficiency condensing tankless water heater
View model
NPE-210A2
NPE-240A2
Max Input: 199,900 BTU/h
Indoor or outdoor wall-hung
Residential/Commercial

ComfortFlow® Technology

Navien NPE-240A2 advanced high efficiency condensing tankless water heater
View model
NPE-240A2

NPE-S2 Series

NPE-150S2
Max Input: 120,000 BTU/h
Indoor or outdoor wall-hung
Residential/Commercial

ComfortFlow® Technology

Navien NPE-150S2 standard high efficiency condensing tankless water heater
View model
NPE-150S2
NPE-180S2
Max Input: 150,000 BTU/h
Indoor or outdoor wall-hung
Residential/Commercial

ComfortFlow® Technology

Navien NPE-180S2 standard high efficiency condensing tankless water heater
View model
NPE-180S2
NPE-210S2
Max Input: 180,000 BTU/h
Indoor or outdoor wall-hung
Residential/Commercial

ComfortFlow® Technology

Navien NPE-210S2 standard high efficiency condensing tankless water heater
View model
NPE-210S2
NPE-240S2
Max Input: 199,900 BTU/h
Indoor or outdoor wall-hung
Residential/Commercial

ComfortFlow® Technology

Navien NPE-240S2 standard high efficiency condensing tankless water heater
View model
NPE-240S2

NHW-AI Series

NHW-160AI
Max DHW Input: 160,000 BTU/h
Indoor wall-hung
Residential/Commercial

ComfortFlow® Technology

Navien NHW-160AI non-condensing indoor tankless water heater
View model
NHW-160AI
NHW-180AI
Max DHW Input: 180,000 BTU/h
Indoor wall-hung
Residential/Commercial

ComfortFlow® Technology

Navien NHW-180AI non-condensing indoor tankless water heater
View model
NHW-180AI
NHW-199AI
Max DHW Input: 199,900 BTU/h
Indoor wall-hung
Residential/Commercial

ComfortFlow® Technology

Navien NHW-199AI non-condensing indoor tankless water heater
View model
NHW-199AI

NHW-AE Series

NHW-160AE
Max DHW Input: 160,000 BTU/h
Outdoor wall-hung
Residential/Commercial

ComfortFlow® Technology

Navien NHW-160AE non-condensing outdoor tankless water heater
View model
NHW-160AE
NHW-180AE
Max DHW Input: 180,000 BTU/h
Outdoor wall-hung
Residential/Commercial

ComfortFlow® Technology

Navien NHW-180AE non-condensing outdoor tankless water heater
View model
NHW-180AE
NHW-199AE
Max DHW Input: 199,900 BTU/h
Outdoor wall-hung
Residential/Commercial

ComfortFlow® Technology

Navien NHW-199AE non-condensing outdoor tankless water heater
View model
NHW-199AE

Explore Best-Selling Wall-Hung Boilers

NHB-H Series

NHB-55H
Max HTG Input: 55,000 BTU/h
Indoor wall-hung
Residential/Commercial

ComfortFlow® Technology

Navien NHB-55H condensing heating boiler
View model
NHB-55H
NHB-80H
Max HTG Input: 80,000 BTU/h
Indoor wall-hung
Residential/Commercial

ComfortFlow® Technology

Navien NHB-80H condensing heating boiler
View model
NHB-80H
NHB-110H
Max HTG Input: 110,000 BTU/h
Indoor wall-hung
Residential/Commercial

ComfortFlow® Technology

Navien NHB-110H condensing heating boiler
View model
NHB-110H
NHB-150H
Max HTG Input: 150,000 BTU/h
Indoor wall-hung
Residential/Commercial

ComfortFlow® Technology

Navien NHB-150H condensing heating boiler
View model
NHB-150H

NFB-H Series

NFB-175H
Max HTG Input: 175,000 BTU/h
Indoor wall-hung
Residential/Commercial

ComfortFlow® Technology

Navien NFB-175H high efficiency condensing heating boiler
View model
NFB-175H
NFB-200H
Max HTG Input: 199,900 BTU/h
Indoor wall-hung
Residential/Commercial

ComfortFlow® Technology

Navien NFB-200H high efficiency condensing heating boiler
View model
NFB-200H

Explore Best-Selling Combi-Boilers

NCB-H Series

NCB-190/060H
Max HTG Input: 60,000 BTU/h
Max DHW Input: 160,000 BTU/h
Indoor wall-hung
Residential

ComfortFlow® Technology

Navien NCB-190/060H condensing tankless combi-boiler
View model
NCB-190/060H
NCB-190/080H
Max HTG Input: 80,000 BTU/h
Max DHW Input: 160,000 BTU/h
Indoor wall-hung
Residential

ComfortFlow® Technology

Navien NCB-190/080H condensing tankless combi-boiler
View model
NCB-190/080H
NCB-240/110H
Max HTG Input: 110,000 BTU/h
Max DHW Input: 199,900 BTU/h
Indoor wall-hung
Residential

ComfortFlow® Technology

Navien NCB-240/110H condensing tankless combi-boiler
View model
NCB-240/110H
NCB-240/130H
Max HTG Input: 130,000 BTU/h
Max DHW Input: 199,900 BTU/h
Indoor wall-hung
Residential

ComfortFlow® Technology

Navien NCB-240/130H condensing tankless combi-boiler
View model
NCB-240/130H
NCB-250/150H
Max HTG Input: 150,000 BTU/h
Max DHW Input: 210,000 BTU/h
Indoor wall-hung
Residential

ComfortFlow® Technology

Navien NCB-250/150H condensing tankless combi-boiler
View model
NCB-250/150H

NFC-H Series

NFC-250/175H
Max HTG Input: 175,000 BTU/h
Max DHW Input: 210,000 BTU/h
Indoor wall-hung
Residential/Commercial

ComfortFlow® Technology

Navien NFC-250/175H condensing fire tube combi boiler
View model
NFC-250/175H
NFC-250/200H
Max HTG Input: 199,900 BTU/h
Max DHW Input: 210,000 BTU/h
Indoor wall-hung
Residential/Commercial

ComfortFlow® Technology

Navien NFC-250/200H condensing fire tube combi boiler
View model
NFC-250/200H
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