Description
Navien NPE-180A2Condensing Tankless Water Heater · 150,000 BTU
A high-efficiency condensing tankless water heater designed for residential and light commercial use, delivering powerful performance while minimizing energy waste.
Equipped with dual stainless steel heat exchangers and a built-in recirculation pump, the NPE-180A2 offers exceptional durability and faster hot water delivery. Navien’s patented ComfortFlow® system is the first to include a buffer tank, recirculation pump and fine-tuned controls into a tankless water heater, resolving the cold-water sandwich effect and issues of minimal flow rates.
Technical specification
| Input range | 10,000 to 150,000 BTU/h |
|---|---|
| Efficiency | 0.95 UEF |
| Flow rate | Up to 8.4 GPM at 35°F rise |
| Heat exchangers | Dual stainless steel |
| Recirculation | Built-in pump, works with external recirc line or existing supply lines via NaviCirc® |
| Emissions | Ultra low NOx (20 ppm) |
| Fuel | Field convertible — natural gas or propane |
| Installation | Indoor or outdoor, wall-hung, compact |
| Controls | EZNav™ multi-line panel with integrated HotButton™ |
| Gas piping | 1/2″ gas line capable up to 24 ft |
| Venting | 2″ up to 75 ft or 3″ up to 150 ft |
| Cascading | Up to 12 units, with common venting |
Applications
Residential Hot Water
Residential hot water systems.
Light Commercial
Light commercial water heating.
High Flow, High Efficiency
Installations requiring high flow at high efficiency.
Compact, Flexible Venting
Projects needing venting flexibility and compact design.
Multi-Unit Configurations
Cascading or common venting requirements.
Key features
- 150,000 BTU/h input with 0.95 UEF efficiency
- Flow rate up to 8.4 GPM at 35°F rise
- Dual stainless steel heat exchangers
- Built-in recirculation pump
- Field convertible between natural gas and propane
- Ultra low NOx emissions (20 ppm)
- EZNav™ multi-line control panel with HotButton™ interface — self-diagnostics, temperature and flow display, cascade status, °F/°C switchable
- 1/2″ gas line capable up to 24 feet
- Indoor or outdoor wall-hung installation
- Vents with 2″ up to 75 ft or 3″ up to 150 ft
- Cascading and common venting with up to 12 units
Navien NPE-180A2 condensing tankless water heater. Follow the installation manual, venting requirements, local gas and plumbing codes, and manufacturer instructions.
