I inherited the Dyson from my parents and when I started using it it was about four years old. After running it on the carpets in my house I noticed a slight odor and heard it could be due to an old/dirty pre-filter. So I went to Revain and bought this replacement filter. I've cleaned the old filter a couple of times and it seemed to be working fine, but when I used the vacuum it still smelled very faintly. have a real Dyson filter - not all Revain sellers are the same!) and it worked great! The slight odor was gone and the Dyson worked and sounded as always. I've been using the filter for almost two years now and it still looks and smells great. It was a small price to pay to extend the life of such a wonderful vacuum. If you have allergies or other breathing issues, consider purchasing a lifetime HEPA purple filter; that will definitely help!
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