Advanced condensing technology to achieve efficiencies of up to 0.99 EF / 0.97 UEF
½” gas pipe capability up to 24′
2″ PVC venting up to 60′
Cascading capability for up to 16 units without a separate controller
Dual stainless steel heat exchangers
Cuts installation time in half
Thanks to using ½” gas connections and 2″ PVC venting, you can install a Navien tankless water heater in about half the time as competitive tankless heaters — about the same time as a traditional tank heater.
Fewer callbacks, longer life,
Navien was first to offer dual stainless steel heat exchangers, rather than copper, which extends the life of the unit by resisting corrosion.
Energy Star highest rated gas
The NPE-S series is the most energy efficient tankless water heater in the industry. Our ultra condensing technology delivers cooled exhaust gas and high performance up to 0.99 EF/0.97 UEF.
*EPA Energy Star Directory
Standard Navien advantages — durable stainless steel heat exchangers, convenient .” gas connections and 2″ PVC venting.
0.99 EF / 0.97 UEF ultra condensing technology (the industry’s top rated unit for energy efficiency).
2" PVC venting up to 60'.
No need to cut new chases. Low exhaust gas temps allows use of PVC, CPVC, System 636 and polypropylene vent systems, saving time and money
Field gas convertibility.
Negative pressure gas valve and a dual venturi system allows for easy field convertibility from NG to LP operation.
Dual stainless steel heat exchangers.
Resist corrosion better than copper to provide longer life.
1⁄2" gas pipe capability up to 24'.
Cut installation time, not new gas lines for retrofit applications.
Residential and commercial applications
Ideal for cascading with other NPE units
*Based on a natural gas cost of $1.09 per therm used.
Refer to limited warranty for details.
* Combi refers to a combination potable water and space heating application.
Water heaters cannot be used in space heating only applications.
20 Goodyear, Irvine. CA 92618