Water Heater Gas Tankless
Navien NHW-SU
Navien NHW-SU universal non-condensing gas tankless water heater for indoor or outdoor retrofit applications.
Fuel
Natural Gas (LP convertible)
Power Source
GAS
Condensing
No
Installation
INDOOR_OR_OUTDOOR
Retrofit Positioning
Yes
Venting
NaviVent 3x5
Model Comparison
3 models
| Specification | 160,000 BTU | 180,000 BTU | 199,000 BTU |
|---|---|---|---|
| Model | NHW-160SU | NHW-180SU | NHW-199SU |
| UEF | 0.81 | 0.81 | 0.81 |
Shared Specifications
All models| Fuel | Natural Gas (LP convertible) |
| Power Source | GAS |
| Condensing | No |
| Installation | INDOOR_OR_OUTDOOR |
| retrofit_positioning | Yes |
| venting | NaviVent 3x5 |
| heat_exchanger | NaviTech stainless steel |
| burner | Stainless steel |
| Application | RESIDENTIAL |
| Type | Water Heater |