Expected noise with air purifiers:
High speed level: Air purifiers that are set on a high-speed level produce more noise because they function at faster rates. On low fan speed, the air purifier should be quieter.
Dirty filters and pre-filters: If the main filter(s) or pre-filter(s) are very clogged or dirty, the engine might not get sufficient airflow, which may result in increased noise levels.
Room environment: In an empty room with high ceilings and hard material there may be increased sound with the echo, compared to room with carpet and other furniture which may help absorb noise created by the device.
If your 2-in-1 device makes an unusual sound:
1.Turn off and unplug your device
2. Remove the main filter(s) according to the instructions in the user manual and make sure that you have removed the plastic cover from the filters.
3. Make sure that there are no objects or dust:
- Inside the air purifier (for Blue air purifiers, look through the top of the unit).
- Around the air inlets and air outlets
- On top of or directly against the air purifier
- On the pre-filters, if your air purifier has pre-filters
4. Re-install the filters correctly and ensure everything is properly seated.
5. Ensure that the device is with at least 10 cm from any objects or wall and is placed on a level surface.
6. Make sure that the air purifier is standing stable on an even surface.
If the noise continues please contact the Blueair Customer Support to get help. If you notice any damage on the device, please contact the Blueair Customer Support.