Here are the following things you can do remove the unusual noise on the fan of your unit:
- Make sure the filters are properly in place with plastic packaging removed.
- Make sure the air purifier is operating on a hard, flat, level surface.
- Replace the filters.
- The air purifier may be damaged, or a foreign object may be inside. Stop using the air purifier and contact Customer Support at email@example.com. Do NOT try to repair the air purifier.