Navien NWP500S050AUMB: $177 a year to run
This model (Water heaters) uses 840 kWh of electricity a year, which costs about $177 a year and $1,765 over 10 years at 21.0¢/kWh.
Energy use
840 kWh
per year
Running cost per year
$177
21.0¢/kWh
Running cost over 10 years
$1,765
Efficiency rank
41 / 705
Product details
| Type | Hybrid/Electric Heat Pump |
|---|---|
| Heat pump type | 240 Volt Integrated HPWH |
| Fuel | Electric |
| Refrigerant | R-134a |
| Available since | April 30, 2025 |
Compared with the average model (Water heaters), this one saves about $50 a year.
More efficient alternatives
| Model | kWh/year | Cost/year |
|---|---|---|
| Arctic Arctic-HP-Hot Water-KA06-50 | 837 | $176 |
| PHNIX KA06-50 | 837 | $176 |
| Bradford White RE2HP50**-1NCTT | 835 | $175 |
| JETGLAS RE2HP50*-1NCTT | 835 | $175 |
| A. O. Smith HPS10-50H45DV 2** | 831 | $175 |
| A. O. Smith HPSN10-50H45DV 2** | 831 | $175 |
| A. O. Smith HPTS-50 2** | 831 | $175 |
| American HPS10250H045DV 2** | 831 | $175 |
- Refrigerators
- Freezers
- Washing machines
- Dishwashers
- Tumble dryers
- Room air conditioners
- Dehumidifiers
- Electric cooktops and ranges
- Televisions
- Computers
- Air purifiers
Source: ENERGY STAR (U.S. EPA) · 21.0¢/kWh (August 2026) · Methodology