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Navien NPN-U compact tankless water heaters work great inside and outside

No one has put more non-condensing ingenuity into tankless than Navien

  • Patented NaviTech™ stainless steel heat exchanger and stainless steel burner with lean/rich stable cleaner burning technology
  • 0.81 UEF for all models
  • NPN-Universal is the only non-condensing unit that can be used inside or outside
  • Strong residential and commercial warranties
  • NaviVent™ concentric 3" x 5" venting

NPN at a glance

NPN-U integrated control panel

allows you to adjust water temperature, operation status and troubleshooting.

Navien NPN stainless steel
heat exchangers give you unmatched
performance and durability

Navien NPN
stainless steel heat exchangers last longer than other competitors.

NPN-U Models

Max DHW Input: 160,000 BTU/H
Indoor or outdoor wall-hung
Max DHW Input: 180,000 BTU/H
Indoor or outdoor wall-hung
Max DHW Input: 199,900 BTU/H
Indoor or outdoor wall-hung

Optional Wi-Fi remote control system


NaviLink makes it easy to communicate with your Navien systems anywhere internet service is accessible. The NaviLink module attaches easily to any new or existing* Navien tankless water heater, combi‐boiler and boiler.

* Existing installations may require the purchase of a new main PCB and front control panel. Units produced on or after 2-22-16 will be compatible out of the box.

Available for Download
on IOS or Android

Optional hot water activation
system for all NPN-U units


At the push of a button, the Navien HotButton activates an external pump and heats water in the supply lines to provide hot water whenever it’s needed.

H2Air Kit optional combination space
heating and domestic hot water system

Optional Remote Control

  • Hot water temperature control.
  • Control operational settings.
  • Display operational info.
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Product Serial number is 15-16 digits and can be found either on the right side of the box or the back of the front cover.
Navien, Inc. Technical Customer Service Department

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