Navien Non-Condensing Tankless Water Heaters NPN-Exterior Series

Endless hot water, endless innovation and endless technical support.

Patented NaviTech™ Technology

The NPN series is the first and only non-condensing tankless series to offer NaviTech™ technology that includes a stainless-steel heat exchanger and an advanced stainless-steel burner which provides the very Low NOx at the level of NPE burner.

  • Patented NaviTech™ stainless steel heat exchanger and stainless steel burner with stable cleaner burning technology
  • 0.81 UEF for all models
  • NPN-E is specifically designed for outdoor use only
  • Strong residential and
    commercial warranties
  • NaviVent™ concentric
    3″ x 5″ venting

NPN-E Control Panel

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

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

NPN-E Models

NPN-160E

NPN-160E

Max DHW Input: 160,000 BTU/H

Outdoor wall-hung

Residential/Commercial

Available in NG or LP

NPN-180E

NPN-180E

Max DHW Input: 180,000 BTU/H

Outdoor wall-hung

Residential/Commercial

Available in NG or LP

NPN-199E

NPN-199E

Max DHW Input: 199,900 BTU/H

Outdoor wall-hung

Residential/Commercial

Available in NG or LP

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.

Click here to learn more about NaviLink

Available for Download on IOS or Android

Optional hot water activation system for all NPN-E 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

Remote Control

  • Hot water temperature control.
  • Control operational settings.
  • Display operational info.
  • Included with NPN-E series.