“How much are replaceable filters? How often do they need to be replaced?”

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• The replacement filters for the Blue Pure 411 Auto is $21.99 and 15% savings with subscription. For optimal performance, we recommend replacing the filter about every 6 months when used 24 hours a day.

  Answered by Blueair Support Team 4 years ago

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• For the 411 model the replacement filter is about $24. The company recommends replacing it every 6 months but I have been vacuuming mine every 3 or 4 months (remove the outer pre-filter then carefully vacuum the inner filter with a brush attachment). I expect my filter to last 15 to 18 months this way.

  Answered by FloydM 3 years ago

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