Navien NWP500S050AUMB
At the national average energy prices this water heater costs $154 a year.
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.
What the register says
| Rating | 3.85 UEF |
|---|---|
| Rated annual electricity | 840 kWh |
| Fuel | Electricity |
| Tank | 44 gallons |
| First-hour rating | 65 gallons |
| Certified | 2025-04-21 |
Priced in your state
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Other Navien water heaters
The nearest by UEF rating.
- NWP500S065AUMB 4.03 UEF
- NWP500S080AUMB 4.05 UEF
- NPE-180S2 0.96 UEF
- NPE-210S2 0.96 UEF
- NPE-240S2 0.96 UEF
- NPE-180A2 0.95 UEF
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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. This page is a record of a published certification; it is not an endorsement, not a quote, and not advice. Corrections.