HEPA filters generally need to be replaced - their design usually means they can’t easily or effectively be washed or vacuumed and reused. They aren’t usually cheap, so this cost can add up over time.
But along with the current shortage of air purifier stock in stores, the replacement HEPA filters are apparently also hard to find at the moment, at least for some brands. (I guess the filters have been worked hard in all the smoke…) So the temptation to reuse rather than replace must be strong.
- Has anyone tried cleaning a HEPA filter (whether from an air purifier, vacuum cleaner or other appliance) and reusing it? What was the result?
- Do you replace the HEPA filter on schedule, as dictated by the machine or its instruction manual, or do you just keep using it until you notice the performance has dropped?