Navien water heaters
9 water heaters listed under Navien.
| Model | UEF | Costs to run |
|---|---|---|
| NWP500S080AUMB | 4.05 | $232 a year |
| NWP500S065AUMB | 4.03 | $228 a year |
| NWP500S050AUMB | 3.85 | $154 a year |
| NPE-240S2 | 0.96 | Not published |
| NPE-210S2 | 0.96 | Not published |
| NPE-180S2 | 0.96 | Not published |
| NPE-240A2 | 0.95 | Not published |
| NPE-210A2 | 0.95 | Not published |
| NPE-180A2 | 0.95 | Not published |
Computed from electricity at 18.34¢/kWh, the EIA average for US in June 2026. A kilowatt-hour is 3412 BTU. This is a rate times a rating, not a prediction of your bill.
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Source: ENERGY STAR certified product data, published by the U.S. EPA and used with attribution. This is a register of certified models, not of every model on the market. ENERGY STAR is a registered mark of the U.S. EPA; this site is not affiliated with or endorsed by EPA or DOE.