A. O. Smith CAHP-66 2**: $272 a year to run
This model (Water heaters) uses 1,292 kWh of electricity a year, which costs about $272 a year and $2,715 over 10 years at 21.0¢/kWh.
Energy use
1,292 kWh
per year
Running cost per year
$272
21.0¢/kWh
Running cost over 10 years
$2,715
Efficiency rank
554 / 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 costs about $45 more a year.
More efficient alternatives
| Model | kWh/year | Cost/year |
|---|---|---|
| AMERICAN STANDARD WATER HEATERS ASHPWH-65***** | 1,289 | $271 |
| Ariston ARIHPWH-65 | 1,289 | $271 |
| Richmond 10CE65-HP5S30 | 1,289 | $271 |
| A. O. Smith CAHP-80 2** | 1,279 | $269 |
| A. O. Smith HPA10-80H45DV 2** | 1,279 | $269 |
| A. O. Smith HPS10-80H45DV 2** | 1,279 | $269 |
| A. O. Smith HPSN10-80H45DV 2** | 1,279 | $269 |
| A. O. Smith HPTA-80 2** | 1,279 | $269 |
- 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