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Life of the filters is based on usage. I find that 6 months for continuous use and 9 to 12 months of moderate use. I use my purifiers all day long
Sorry, there was a problem. Please try again later.Hi there, this is Kelly with Dyson. The filter in the DP04 Pure Cool will last 4382 hours. If you were to use the machine 12 hours every single day, you can expect a year of life from the filter. Best wishes, Kelly Dyson Customer Support
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