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NPN-Universal

PREMIUM NON-CONDENSING TANKLESS WATER HEATER

 Navien NPN-160U non-condensing tankless water heater

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

non-condensing tankless water heater installed in laundry room with homeowner and service technician standing nearby
NPN-U universal non-condensing tankless water heater installed on exterior of home with homeowner standing nearby
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The #1 selling
tankless water heaters.

Navien is now the #1 manufacturer of all gas tankless water heaters (condensing and non-condensing) in North America*

*According to BRG

Learn More

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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
  • Slim unit with pin-to-pin design matches common tankless configurations for easy retrofit installation
  • NPN-Universal is the only non-condensing unit that can be used inside or outside (see NPN-E Series for outdoor installation)
  • Strong residential and commercial warranties
  • NaviVent™ concentric 3" x 5" venting
non-condensing tankless water heater for indoor or outdoor installation, with cover removed and internal components visible
Navitech stainless steel heat exchanger and burner
0.81 UEF
up to 9.5 GPM at 35-degree temp rise

NPN at a glance

  Navien NPN: 0.81 Traditional tank water heater: 0.58 - 0.61 Traditional non-condensing tankless: 0.81
Patented NaviTech technology: stainless steel heat exchanger and stainless steel burner Yes No No
Universal indoor-outdoor design Yes No No
Universal Energy Factor (UEF) 0.81 0.58 - 0.61 0.81
Dimensions 14.0" x 9.3" x 23" ~25" diameter x 59"  
Weight 55 lbs. 150+ lbs. 55 lbs.
Venting Concentric Concentric 3" x 5" Varies 2" x 4" Concentric 3" x 5"
Gas connection size 3/4" 1/2" – 3/4" 3/4"
NPN-U non-condensing tankless water heater with integrated control panel

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

close up image of stainless steel heat exchanger inside non-condensing tankless water heater
NPN stainless steel heat exchanger shown alongside a copper heat exchanger which doesn't last as long

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

NPN-U Models

NPN-160U
Max DHW Input: 160,000 BTU/h
Indoor or outdoor wall-hung
Residential/Commercial
Navien NPN-160U non-condensing indoor & outdoor tankless water heater
View model
NPN-160U
NPN-180U
Max DHW Input: 180,000 BTU/h
Indoor or outdoor wall-hung
Residential/Commercial
Navien NPN-180U non-condensing indoor & outdoor tankless water heater
View model
NPN-180U
NPN-199U
Max DHW Input: 199,900 BTU/h
Indoor or outdoor wall-hung
Residential/Commercial
Navien NPN-199U non-condensing indoor & outdoor tankless water heater
View model
NPN-199U
Hotbutton-logo-new

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.

Navien Hot Button control kit with wall plate and push button
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