United Plumbing & Fire Supplies
Navien NHW-180SE Non-Condensing Tankless Water Heater (Outdoor)
Navien NHW-180SE Non-Condensing Tankless Water Heater (Outdoor)
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Product Description:
The Navien NHW‑180SE is a powerful, outdoor-rated, non-condensing tankless water heater built for high-performance applications. Delivering 180,000 BTU, it features a stainless steel heat exchanger and burner, ultra-low NOₓ emissions, and a compact, wall-mounted design that simplifies installation while maximizing efficiency.
With a Uniform Energy Factor (UEF) of 0.81, the NHW-180SE offers consistent hot water for residential properties without the need for indoor venting or condensate management. It's an ideal upgrade for homes seeking efficient, on-demand hot water in outdoor settings.
Key Specifications & Benefits:
| Feature | Specification / Benefit |
|---|---|
| BTU Input | 180,000 BTU |
| Installation | Outdoor-only — no venting required |
| Heat Exchanger & Burner | Stainless steel construction for durability |
| Efficiency | 0.81 UEF |
| Flow Rate | ~5.6 GPM at 45°F temperature rise |
| Emissions | Ultra-low NOₓ (20 ppm) |
| Fuel Type | Natural Gas or Propane |
| Power Supply | 120V AC (standard outlet) |
| Dimensions | 17.3″ W × 26.5″ H × 10.3″ D |
| Warranty | 15-year heat exchanger, 5-year parts (residential) |
Why Choose NHW-180SE?
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Mid-size Performance: Ideal for households with multiple bathrooms or moderate hot water demand.
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Outdoor Simplicity: Eliminates the need for indoor venting and condensate drainage.
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Reliable Construction: All-stainless internal components for corrosion resistance and long life.
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Eco-Conscious: Meets stringent low NOₓ emission standards.
Ideal Applications:
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Residential homes in warmer climates
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Outdoor utility walls, garages, or exterior mechanical zones
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Retrofit upgrades from tank systems
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