I've found our Dyson TP02 to be very picky on the state of the filter, it will throw an error even though filters weren't that old.
So far these replacements have worked great, exact same performance as the originals, and included a little brush and prefilter so you can dust it off to extend the life and make the Dyson happy. Part of the reason I picked the Dyson in the first place was the availability of equivalent 3rd party filters like this, keeps it much cheaper to operate.
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