Ariston Water heaters: energy use and running cost
The average model uses 1,080 kWh a year, which costs $227 a year at 21.0¢/kWh.
Most efficient models
| Model | kWh/year | Cost/year |
|---|---|---|
| Ariston ARIHPWH-50-T | 848 | $178 |
| Ariston ARIHPWH-50 | 867 | $182 |
| Ariston ARIHPWH-40 | 907 | $191 |
| Ariston ARIHPWH-40-T | 915 | $192 |
| Ariston ARIHPWH-80-T | 1,210 | $254 |
| Ariston ARIHPWH-65-T | 1,225 | $257 |
| Ariston ARIHPWH-80 | 1,238 | $260 |
| Ariston ARIHPWH-65 | 1,289 | $271 |
- 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