You accept the use of cookies as described in our Privacy Policy by clicking 'OK'.
Tankless Water Heaters
Condensing
Non-Condensing
Navien NPE-2 Series and NPN Series high efficiency tankless water heaters provide endless domestic hot water, all while keeping your utility bills low.
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
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 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
How Tankless Water Heaters Work
When a hot water tap is opened, the tankless water heater detects the flow
The flow sensor activates to determine the amount of hot water needed
The igniter activates
The gas control valve opens to supply the correct amount of gas
The fan and venturi activate to provide the correct amount of gas and fuel
The premix burner ignites providing a flame to heat the water
Cold water is pre-heated in the secondary heat exchanger
Pre-heated water passes from the secondary to the primary heat exchanger
The unit determines outgoing set temperature and adjusts the flame to heat the water
Heated water moves to the buffer tank
Desired hot water amount delivered to the faucet
When a hot water tap is opened, the tankless water heater detects the flow
The flow sensor activates to determine the amount of hot water needed
The igniter activates
The gas control valve opens to supply the correct amount of gas
The fan and venturi activate to provide the correct amount of gas and fuel
The premix burner ignites providing a flame to heat the water
Cold water is pre-heated in the secondary heat exchanger
Pre-heated water passes from the secondary to the primary heat exchanger
The unit determines outgoing set temperature and adjusts the flame to heat the water
Heated water moves to the buffer tank
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
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
Durable, Long-Lasting Construction
Navien NPE-2 condensing tankless water heaters use durable dual stainless steel heat exchangers.
Eco-Friendly
Condensing technology reduces energy consumption and greenhouse gas emissions
Control from Your Phone
Optional NaviLink™ Wi-Fi control system gives you access to your Navien systems from anywhere in the world
Multiple venting options
For homes with extra high demand, NPE-2 Series units can be cascaded without an external control
On-demand Recirculation
HotButton on-demand recirculation option with built-in controller
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
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.
How Non-Condensing Tankless Water Heaters Work
When a hot water tap is opened, the tankless water heater detects the flow
The flow sensor activates to determine the amount of hot water needed
The igniter activates
The gas control valve opens to supply the correct amount of gas
The burner ignites providing a flame to heat the water
Cold water passes through the heat exchanger
The unit determines outgoing set temperature and adjusts the flame to heat the water
Desired hot water amount delivered to the faucet
When a hot water tap is opened, the tankless water heater detects the flow
The flow sensor activates to determine the amount of hot water needed
The igniter activates
The gas control valve opens to supply the correct amount of gas
The burner ignites providing a flame to heat the water
Cold water passes through the heat exchanger
The unit determines outgoing set temperature and adjusts the flame to heat the water
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.
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.
Navitech™ stainless steel burner.
Designed and manufactured by Navien to burn gas at higher efficiency than other system on the market.
Cascading capability.
For increased domestic hot water flow demand, the NPN can be cascaded with another NPN unit.
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.
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.
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.
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.
Find a Navien Tankless Water Heater Installer Near You
Find an Installer
