The Air Purifier's noise levels depend on its fan speed:
- Low: 39dBA (Soft)
- Mid: 48dBA (Moderate)
- High: 54dBA (Moderate)
- Auto mode: 39-54dBA (Soft to Moderate) This depends on the PM2.5 reading
The noise levels were measured at 1 meter away from AP550 with background noise at 33dBA; It spans from the bedroom to the average living room sound level.
For reference, a typical hair dryer has a noise level from 91dBA to 110dBA.