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.

Descaling is a process that removes mineral deposits from the inside of the tankless water heater. It’s something that needs to be done yearly, unless you have very soft water.

NHW-AI (Advanced Interior) models are the only indoor non-condensing tankless water heaters with ComfortFlow® built-in recirculation pump and buffer tank for faster hot water and no cold water sandwiches.

Image

DielectricUnion

Unlike traditional water heaters with tanks, tankless models don't store water, so they don’t consume energy unless there’s a demand for hot water. This makes them both highly energy-efficient and suitable for continuous use.

No, you can install a tankless water heater on an inside or an outside wall. Navien offers both indoor and outdoor tankless water heaters, as well as units that work in both settings.

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

DielectricCoupling

Installing a Navien tankless water heater is best done by a licensed plumbing contractor professional because it involves disconnecting and reconnecting gas lines. Venting and wiring also require professional expertise to ensure the installation meets building codes. Use Navien’s installer and service locator to find a specialist in your area.

To choose the right size tankless water heater for your home, you will need to consider a few factors, such as: the number of people in your household, the average water usage in your household, and the climate in your area. Use our Navisizer tool to quickly find the right model for your home or business.

Tankless water heaters heat water only as it’s needed, which makes them more efficient than even the highest-efficiency tank style gas water heater. According to the U.S. Department of Energy, tankless water heaters can be up to 34% more efficient than storge tank water heaters.

NHW-SU (Universal) premium non-condensing tankless water heaters offer a compact tankless solution, good for retrofits in both indoor and outdoor installations.

Navien offers models of tankless water heaters that use either condensing or non-condensing technology. Details on the differences between the two are below.

Resources | Partners Login | Become an NSS | Certifications | Parts List |  Technical Support |  Careers | Global Network | Warranty

Image

Navien tankless water heaters are silent when not in use. When producing hot water, your tankless water heater will make a low, steady humming sound comparable to a refrigerator running.

High-efficiency tankless water heaters are rated by a UEF: Uniform Energy Factor. This rating is based on how much energy the unit uses, and what percentage of that energy is used to power the unit. Navien’s NPE-2 series condensing tankless water heaters have up to .96 UEF, which is at the top of the high-efficiency range:

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 & NHW-A series are the only non-condensing tankless water heaters to offer NaviTech™ stainless steel heat exchanger and stainless steel burner for durable and eco-friendly performance.

All contents copyright © Navien Inc. | About Navien | Contact Us | Terms of Use | Privacy Policy | CCPA | CPRA | CPA | VCDPA | Notices

3Dielectric FlangeKit

If installed indoors, you can install your tankless water heater on either an interior or exterior wall, depending on where you have space. It’s preferable to mount your indoor  tankless water heater to  an exterior wall if possible, to reduce the length of vent piping.

It is worth switching to a tankless water heater if you are looking for a more efficient option. Tankless water heaters can save you money on your energy bill, and they can also have a longer lifespan than traditional water heaters.

Navien tankless water heaters only require 2-4 Amps to run, and don’t need a dedicated electrical line. All Navien tankless water heaters have a factory-installed 3-pronged (grounded) plug and can be plugged into any grounded electrical outlet nearby.

WattsDielectric flange

A tankless water heater is a type of water heater that doesn’t use a storage tank to heat water. Instead, hot water is produced only when you need it. Tankless water heaters are smaller and more efficient than traditional water heaters.

Navien tankless water heaters have a lifespan of up to 20 years. However, proper maintenance is required in order to achieve this lifespan.

Switching from a conventional gas water heater to a Navien high efficiency tankless water heater (gas or liquid propane) means you’ll use less fuel to heat the same amount of water.

6"dielectric flange

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

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

Dielectric flangekit

Condensing tankless water heaters need a condensate drain. This is because when the water is heated, it produces condensation that needs to be drained away. The condensate drain ensures that this doesn’t build up and cause problems with the tankless water heater. Non-condensing tankless water heaters do not need a condensate drain.

Navien tankless water heaters have an optional NaviLink Wi-Fi system that lets you monitor and control your water heater from anywhere using your smartphone, for the ultimate peace of mind.

NHW-SE (Exterior) non-condensing tankless water heaters offer a compact tankless solution ideal for retrofits outdoor installations.

NHW-AE (Advanced Exterior) models are the only outdoor non-condensing tankless water heaters with ComfortFlow® built-in recirculation pump and buffer tank delivering hot water faster without cold water sandwiches.

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

Image