For years I washed filters and canisters because I thought that was all I needed; not correct. I bought new filters and installed them, suction was pretty good. The vacuum cleaner brought a couple of kittens, a pillow and a liter of wine [all saved]. Jokes aside, replace them from time to time as "micro dust" will clog the filter and the vacuum cleaner will very slowly lose its "vacuum" power. I'm really amazed.
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