Review on 🌬️ BISSELL air400, 2521 Replacement HEPA Filter and Pre Filter: Enhance Air Quality Effortlessly by Raymond Wade

The first randomly switches itself off, which becomes more and more common over time. The second one went out on its own about 5 times now and the fan bearing made a loud noise after a month. Bissell made no warranty because 30 days had elapsed from the date of purchase of the first defective unit; However, the second one was also defective. Bissell expected me to send it back at my own expense so they could do research and development and decide what to do next." BAD BISSELL Stay away from this air purifier, stay with a company that lives in the already made a name for itself in the air cleaning industry, Bissell should stick to vacuums and carpet cleaners.