Alen Air purifiers: energy use and running cost
The average model uses 181 kWh a year, which costs $38 a year at 21.0¢/kWh.
Most efficient models
| Model | kWh/year | Cost/year |
|---|---|---|
| Alen BreatheSmart 25i | 90 | $19 |
| Alen BreatheSmart 35i | 136 | $29 |
| Alen BreatheSmart 75i_V2 | 304 | $64 |
- Refrigerators
- Freezers
- Washing machines
- Dishwashers
- Tumble dryers
- Room air conditioners
- Dehumidifiers
- Water heaters
- Electric cooktops and ranges
- Televisions
- Computers
Source: ENERGY STAR (U.S. EPA) · 21.0¢/kWh (August 2026) · Methodology