SIESEAN AP-400: $51 a year to run
This model (Air purifiers) uses 243 kWh of electricity a year, which costs about $51 a year and $511 over 10 years at 21.0¢/kWh.
Energy use
243 kWh
per year
Running cost per year
$51
21.0¢/kWh
Running cost over 10 years
$511
Efficiency rank
177 / 240
Product details
| Room size (sq ft) | 357 |
|---|---|
| Technology | Fan and Filter |
| ENERGY STAR Most Efficient | No |
| Available since | September 17, 2025 |
Compared with the average model (Air purifiers), this one costs about $13 more a year.
More efficient alternatives
| Model | kWh/year | Cost/year |
|---|---|---|
| Amazon Basics AP5110-UL | 240 | $50 |
| LEVOIT Core 400S | 237 | $50 |
| Blueair 4312111000 | 235 | $49 |
| Coway AP-3018B | 235 | $49 |
| LEVOIT LAP-C401S-WUSR | 235 | $49 |
| Winix C610 | 235 | $49 |
| Winix C710 | 235 | $49 |
| Blueair 3432111100 | 227 | $48 |
- 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