A. O. Smith CAHP-40 2**: $190 a year to run
This model (Water heaters) uses 902 kWh of electricity a year, which costs about $190 a year and $1,896 over 10 years at 21.0¢/kWh.
Energy use
902 kWh
per year
Running cost per year
$190
21.0¢/kWh
Running cost over 10 years
$1,896
Efficiency rank
233 / 705
Product details
| Type | Hybrid/Electric Heat Pump |
|---|---|
| Heat pump type | 240 Volt Integrated HPWH |
| Fuel | Electric |
| Refrigerant | R-134a |
| Available since | March 1, 2024 |
Compared with the average model (Water heaters), this one saves about $37 a year.
More efficient alternatives
| Model | kWh/year | Cost/year |
|---|---|---|
| Friedrich PROH65 T2 FD310BM | 900 | $189 |
| Friedrich PROH65 T2 FD310UM | 900 | $189 |
| Friedrich PROH65 T2 FD350BM | 900 | $189 |
| Friedrich PROH65 T2 FD350UM | 900 | $189 |
| Rheem CPRO H65 T2 RH310BM | 900 | $189 |
| Rheem CPROPH65 T2 RH350BM | 900 | $189 |
| Rheem ECEPH65 T2 RH350BM | 900 | $189 |
| Rheem PRO H65 T2 RH310BM | 900 | $189 |
- 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