How often should I clean or replace the filters in my HFD360?
The ifD® Particle Filter should be washed every 3 months, and the Odor & VOC Reducing K Pre-filter should be replaced every 3 months for optimal performance. The CHECK FILTERS light will illuminate after 2160 hours (3 months) of operation to remind you. (Page 3)
From the official Honeywell HFD360 Air Purifier manual, page 3
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