Review on 🌬️ High-Quality Winix 114290 Replacement Filter F for U450 Air Purifier by Jen Rose

Have been buying it every year for a while. I have two U450 on 1000 sqm. ft. "Delete" is the wrong name. Simply vacuum the pre-filter regularly and replace the entire cartridge once a year. People ruin their filters by getting them wet when you should be able to. In the past they were cheaper through Winix with a coupon, but this time Revain was the way to go. Rather, I think they last longer in pet-free homes and aren't too wet. For cost reasons, I prefer 18-month intervals.