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NPN-Exterior

Non-Condensing Gas Tankless Water Heater

Npn-e-2021

Endless hot water, endless innovation and endless technical support 

Outdoor wall-hung tankless gas water heaters available in natural gas (NG) or liquid propane (LP).

NPN-E control panel

user-friendly controls allow you to adjust water temperature, operation status and troubleshooting.

NPN-E Models

Navien gas outdoor tankless water heaters can be cascaded to meet high-volume hot water demand. All NPN-E units include built-in recirculation control and software, and a water adjustment valve (WAV) and mixing valve to stabilize temperature during flow changes. The built-in air pressure sensor (APS) monitors and maintains air/gas pressure ratio during operation and ensures consistent hot water output during partial air blockage.

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

Available in NG or LP

NPN-160E
View model
NPN-160E
NPN-180E
Max DHW Input: 180,000 BTU/h
Outdoor wall-hung
Residential/Commercial

Available in NG or LP

NPN-180E
View model
NPN-180E
NPN-199E
Max DHW Input: 199,900 BTU/h
Outdoor wall-hung
Residential/Commercial

Available in NG or LP

NPN-199E
View model
NPN-199E

NPN-E Advantages

Approved for mobile & manufactured homes. NPN-E outdoor gas tankless water heaters are ideal for eco-friendly houses of all sizes.
Space-saving design. Sleek wall-hung units need less room and are substantially lighter than traditional tank water heaters.
Low noise levels. Install near a deck, outdoor kitchen or other outdoor living space — the quiet-running NPN-E units won't disturb your enjoyment.
Easy retrofit installation. Pin-to-pin design matches configuration of other tankless models for a simpler swap.
Manufacturing integrity. Navien engineers and produces 90% of the components used in our NPN-E series units.

Optional Wi-Fi remote control system

 

NaviLink makes it easy to communicate with your outdoor tankless water heater anywhere internet service is accessible. The NaviLink module attaches easily to any new or existing* Navien gas tankless water heater.


* Existing installations may require the purchase of a new main PCB and front control panel. 

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.

NPN-E FAQ

Outdoor tankless water heaters generally have a lifespan of about 15 to 20 years. Navien heat exchangers have a warranty of 15 years.

Navien tankless water heaters provide on-demand hot water. A gas line, sufficient combustion air, a vent to evacuate combustion gas, and an electrical outlet are required to operate the gas unit properly.

Using an outside tankless water heater frees up space indoors. No additional venting is required when installing an NPN-E Series tankless water heater outside in non-freezing regions.

No, you cannot install an outdoor unit in a garage. Only outdoor units can be installed outdoors.

In comparison with traditional water heaters, tankless water heaters can be up to 34% smaller. Navien units can also be installed in more places, including crawl spaces and attics, since they are so small- about the size of a small suitcase.

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