Tankless Water Heaters

Navien NPE-2 Series and NPN Series high efficiency tankless water heaters provide endless domestic hot water, all while keeping your utility bills low.

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Condensing Tankless
Water Heaters

Navien Premium Efficiency condensing tankless water heaters are the #1 selling high efficiency condensing tankless water heaters in North America. The NPE-2 series offers ultra-high efficiency up to 0.96 UEF to keep your utility bills low, endless hot water, and exclusive ComfortFlow® technology with a built-in recirculation pump and buffer tank.

New NPE-A2 Series

Three NPE-A2 Advanced Premium models offer a Uniform Energy Factor up to .95 and feature Navien’s patented ComfortFlow system.

Learn more about the
 NPE-A2 Series

New NPE-S2 Series

Four NPE-S2 Standard Premium models offer a Uniform Energy
Factor up to .96, providing more output, lower installation costs
and lower operating costs.

Learn more about the
NPE-S2 Series

Navien NPE tankless water heaters
Navien NPN tankless water heaters

Non-Condensing 
Tankless Water Heaters

Navien Premium Non-condensing tankless water heaters deliver a continuous flow of hot water for as long as you need it. No waiting for a tank to reheat more water, wasting time and energy. NPN series is the only non-condensing tankless water heater to offer NaviTech™ stainless steel heat exchanger and stainless steel burner for durable and eco-friendly performance.

NPN-U Series

NPN-U (Universal) premium non-condensing tankless water heaters offer a compact tankless solution for both indoor and outdoor installations.

Learn more about the
NPN-Universal Series

NPN-E Series

NPN-E (Exterior) non-condensing tankless water heaters offer a compact tankless solution for outdoor installations.

Learn more about the
NPN-Exterior Series

Condensing VS Non-Condensing Tankless Water Heaters

  Condensing Non-Condensing
Efficiency Ultra-high Efficiency (UEF up to .96) High Efficiency (UEF > .80)
Venting PVC acceptable 3" x 5" metal concentric required
Installation Location Indoor or Outdoor Choice of interior or exterior
Long term operating cost Lower than typical non-condensing tankless and storage tank system Could be higher than condensing but lower than storage tank systems
Durability Stainless steel heat exchanger extend service life Stainless steel heat exchanger extend service life
Dimensions Slightly larger than non-condensing, about 70-80% smaller than tank system Slightly smaller than condensing, 80% smaller than tank system
Initial cost Usually higher than comparable non-condensing Usually lower than comparable condensing
Maintenance requirement Annual service recommended Minimal

All the hot water you need, for as long
as you need it

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Tankless Water Heaters Work

  1. When a hot water tap is opened, the tankless water heater detects the flow

  2. The flow sensor activates to determine the amount of hot water needed

  3. The igniter activates

  4. The gas control valve opens to supply the correct amount of gas

  5. The fan and venturi activate to provide the correct amount of gas and fuel

  6. The premix burner ignites providing a flame to heat the water

  7. Cold water is pre-heated in the secondary heat exchanger

  8. Pre-heated water passes from the secondary to the primary heat exchanger

  9. The unit determines outgoing set temperature and adjusts the flame to heat the water

  10. Heated water moves to the buffer tank

  11. Desired hot water amount delivered to the faucet

NAVIEN TANKLESS WATER HEATERS FEATURES

Bulky tanks are history... Navien high efficiency tankless is the future

  • Endless hot water when you want it
  • Compact space-saving design
  • Lower energy bills
  • Longer life than tanks
  • 15 year warranty dual stainless steel heat exchangers

Learn more about the
 NPE-A2 Series

Learn more about the
 NPE-S2 Series

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Navien NPE-2 Series condensing tankless water heaters deliver an endless supply of hot water for any size home.

Besides providing hot water where and when it’s needed, the NPE-2 Series offer homeowners the following benefits:

  • Much more energy efficient than old fashioned tank systems
  • Ultra high energy efficiency —
    up to 0.96 UEF
  • Backed by the industry's strongest warranty – 15 years on heat exchangers
  • Energy Star certified
  • Takes about 80% less space than old fashioned tank heaters
  • Longer lasting than tank heaters
  • Easy to use control panel
  • Elegant, clean appearance
  • Improves resale value
  • Ideal for replacements or new construction

BENEFITS OF NAVIEN CONDENSING TANKLESS WATER HEATERS

The Ultimate Endless Hot Water Solution For Your Home

 

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    Durable, Long-Lasting Construction

    Navien NPE-2 condensing tankless water heaters use durable dual stainless steel heat exchangers.

  • Nfc-feature-flat-plate

    Eco-Friendly

    Condensing technology reduces energy consumption and greenhouse gas emissions

  • Npe-2-feature-navilink

    Control from Your Phone

    Optional NaviLink™ Wi-Fi control system gives you access to your Navien systems from anywhere in the world

  • Npe-2-feature-cascade

    Multiple venting options

    For homes with extra high demand, NPE-2 Series units can be cascaded without an external control

  • Npe-2-feature-hotbutton

    On-demand Recirculation

    HotButton on-demand recirculation option with built-in controller

  • Npe-2-feature-h2air

    Optional Forced Air Systems

    H2Air combination space heating and domestic hot water supply optional for NPE-A2 models

The ultimate in energy efficiency

Navien condensing technology provides up to 0.96 UEF. These extremely efficient and eco-friendly units provide extra energy savings over traditional tank and non-condensing tankless water heaters.

Operating Cost

Navien Tankless
175.0 therms
$191*
Other Tankless
209 therms
$228
50 Gallon Tank
269 therms
$293
* Based on Energy Guide cost estimates using $1.09 per therm of natural gas. Cost is in US dollars.
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Protect the environment
as you add value

 
Navien condensing stainless steel heat exchangers recover extra heat that would be lost in non-condensing boilers. The result is a reduction in energy consumption, lower CO2 emissions and low exhaust temperatures allowing the use of less expensive venting materials such as Schedule 40 PVC.

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How Non-Condensing Tankless Water Heaters Work

how non-condensing tankless water heaters work
  1. When a hot water tap is opened, the tankless water heater detects the flow

  2. The flow sensor activates to determine the amount of hot water needed

  3. The igniter activates

  4. The gas control valve opens to supply the correct amount of gas

  5. The burner ignites providing a flame to heat the water

  6. Cold water passes through the heat exchanger

  7. The unit determines outgoing set temperature and adjusts the flame to heat the water

  8. Desired hot water amount delivered to the faucet

Navien NPN Premium Non-Condensing Tankless Water Heaters

Introducing The New NPN Series

Compare our advantages to other non-condensing tankless water heaters


Exclusive Navien NPN-Universal indoor or outdoor unit and NPN-Exterior dedicated outdoor unit. NPN-E outdoor models also feature remote control and built-in button controls for easy service. 

NPN series tankless water heaters
  • NPN tankless water heaters burner

    Navitech™ exclusive stainless steel heat exchanger.

    NPN series are the first and only non condensing tankless water heaters with a stainless steel heat exchanger to deliver unmatched durability and performance.

  • NPN tankless water heaters heat exchanger

    Navitech™ stainless steel burner.

    Designed and manufactured by Navien to burn gas at higher efficiency than other system on the market.

  • NPN tankless water heaters cascade

    Cascading capability.

    For increased domestic hot water flow demand, the NPN can be cascaded with another NPN unit.

  • NPN tankless water heaters NaviLink

    NaviLink™ Wi-Fi remote control.

    This optional accessory enables you to control temperatures remotely, access usage data and receive diagnostic notifications from your smart phone or tablet.

  • NPN tankless water heaters sleek design

    Space saving and lighter weight design.

    These sleek wall-hung units use much less space and are substantially lighter than traditional tank water heaters and other non-condensing tankless water heaters.

  • NPN tankless water heaters closet

    Low noise levels.

    Installations in or near media rooms, recreation rooms or any living areas of the house are possible with the quiet running NPN tankless water heaters.

Navien tankless water heaters make the world greener

Lower energy bills, easier on the planet.

 

Unlike systems that waste energy to heat large tanks of water, Navien NPN series tankless units utilize 82¢ of every $1 to heat your water. NPN only fires up when hot water is needed allowing great utility savings and a lower impact on the environment.

Navien tankless water heaters provide a better environment for kids

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