Thanks for your contact. we understand that there is noise coming from the air purifier.
We're deeply sorry for what you have had with it.
We guess that the motor of the air purifier was damaged for improper transportation of the carrier. Please don't be worried about that and this case is not a common one.
You're our valued customer, it’s our great honor to solve your problem. Could you please send us the issue video via email for more investigation? And after our support team checks it out, we would love to resend you a new item or refund you immediately.
Again, we sincerely apologize for the great inconvenience caused to you and highly appreciate your kind understanding!
if you have any other needs or puzzles, please feel free to contact us. We're always here for you.