Rainbow 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 |
|---|---|---|
| Rainbow Exhalaron Ultra Tri | 42 | $9 |
| Rainbow Luggable XXL | 75 | $16 |
| Rainbow Luggable XL Ultra | 81 | $17 |
| Rainbow Luggable Ultra | 93 | $20 |
| Rainbow Brisk Box Ultra | 94 | $20 |
- 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