A. O. Smith HPACO-45 1**+AXST-80 1**: $274 a year to run
This model (Water heaters) uses 1,306 kWh of electricity a year, which costs about $274 a year and $2,745 over 10 years at 21.0¢/kWh.
Energy use
1,306 kWh
per year
Running cost per year
$274
21.0¢/kWh
Running cost over 10 years
$2,745
Efficiency rank
580 / 705
Product details
| Type | Hybrid/Electric Heat Pump |
|---|---|
| Heat pump type | Split System HPWH |
| Fuel | Electric |
| Refrigerant | R-744 (CO2) |
| Available since | February 13, 2026 |
Compared with the average model (Water heaters), this one costs about $48 more a year.
More efficient alternatives
| Model | kWh/year | Cost/year |
|---|---|---|
| Friedrich PROH80 T2 FD310BM | 1,303 | $274 |
| Friedrich PROH80 T2 FD310UM | 1,303 | $274 |
| Friedrich PROH80 T2 FD350BM | 1,303 | $274 |
| Friedrich PROH80 T2 FD350UM | 1,303 | $274 |
| Rheem CPROPH80 T2 RH350BM | 1,303 | $274 |
| Rheem ECE H80 T2 RH310BM | 1,303 | $274 |
| Rheem ECEPH80 T2 RH350BM | 1,303 | $274 |
| Rheem PRO H80 T2 RH310BM | 1,303 | $274 |
- 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