AT40
Winix · Air Cleaner
ENERGY STAR CertifiedRoom Air Cleaners →
Room Size
411sq ft
PM2.5 CADR
261cfm
Efficiency
5.6cfm/W
Annual Energy
272kWh/yr
Winix AT40: room size 411 sq ft, around the middle of the range for room air cleaners (category median 244 sq ft).
Where this model sits
Room Size411sq ft
48median 244894
PM2.5 CADR261cfm
32median 162581
The Winix AT40 is a 411 sq ft air cleaner.
Specifications
| Coverage | |
|---|---|
| Suggested Room Size | 411sq ft |
| PM2.5 CADR | 261cfm |
| Clean Air Delivery Rate | |
| Dust CADR | 259cfm |
| Smoke CADR | 265cfm |
| Pollen CADR | 244cfm |
| Efficiency | |
| Integrated Energy Factor | 5.60cfm/W |
| Dust CADR per Watt | 5.64cfm/W |
| Annual Energy Use | 272kWh/yr |
| Ozone Emissions | 0ppb |
| Most Efficient | No |
All 20 specifications
| Configuration | |
|---|---|
| Filter Type | HEPA-Type |
| Automatic Mode | Air Quality Sensor |
| Connected Capable | Yes |
| Connects Using | Wi-Fi |
| Identifiers | |
| Model Number | AT40 |
| ENERGY STAR ID | ES_1027545_AT40_052820261514610_8671576 |
| Partner | WINIX Inc. |
| Date Certified | 2026-05-29 |
| Available From | 2026-05-29 |
| Markets | United States, Canada |
Documentation
We link to manufacturer documentation at its original source rather than rehosting it, so you always get the current revision.