Navien Water Heaters
Features
NPE Series Premium Condensing Tankless Gas Heater
NPE-A Advanced high-efficiency tankless water heater technology for residential and commercial applications. Exclusive ComfortFlow technology with internal buffer tank and recirculation pump maintains a steady stream of heated water to eliminate cold water sandwiches and issues of minimum flow rates.
NPE-S Standard ultra condensing technology without ComfortFlow technology.
- Ultra Condensing Efficiency
- Two Stainless Steel Heat Exchangers – Provides longer life expectancy as they are highly resistant to corrosion and erosion compared to copper heat exchangers.
- Low NOx Emissions (≤ 20ppm) – New metal fiber burner is designed to deliver a consistent air/gas mixture improving combustion efficiency.
- 2 in. PVC, CPVC, Polyprophylene Venting Up To 60 ft.
- Utilizes Existing 1/2 in. Gas Line – The negative pressure gas valve and fan with dual venturi operation allows for better adaptability to low gas pressure applications.
- Field Convertable: NPE models allow for easy convertibility from NG to LP.
- Less Water Pressure Drop – Simple modular for water path minimizes water pressure drop.
- Front Panel Command Center – with self-diagnostics.


Specifications
| MODEL | Configuration | Max MBtuH |
Min MBtuH |
Flow Rate GPM |
UEF | Temp. Range |
Dimensions HxWxD |
Weight Lbs. |
|---|---|---|---|---|---|---|---|---|
| NPE-180S | 16.0 | 0.0 | 3.80 | 1.00 | 27.4×17.3×11.4 | 67 | ||
| NPE-210S | 19.9 | 0.0 | 4.60 | 1.00 | 27.4×17.3×13.2 | 75 | ||
| NPE-240S | 19.9 | 0.0 | 5.10 | 1.00 | 27.4×17.3×13.2 | 75 | ||
| NPE-180A | 16.0 | 0.0 | 3.80 | 1.00 | 27.4×17.3×11.4 | 75 | ||
| NPE-210A | 19.9 | 0.0 | 4.60 | 1.00 | 27.4×17.3×13.2 | 82 | ||
| NPE-240A | 19.9 | 0.0 | 5.10 | 1.00 | 27.4×17.3×13.2 | 82 |
Warranty
Warranty Information
- Heat Exchanger for 180 months –
- All Parts for 60 months –
- Limited Labor for 12 months –
Documents
Available Documents
- View Document (Consumer Literature, Color)
- View Document (Owners Manual, Customer Information, In the Box)
- View Document (Installation & Operation, In the Box)
- View Document (Installation & Operation, In the Box)