Infoseepage on Nostr: Replaced the HEPA filters in my Levoit 400s and 600s units. I use a paintbrush to ...

Replaced the HEPA filters in my Levoit 400s and 600s units. I use a paintbrush to clean accumulated dust off the pre-filter every 2-3 weeks and it's astounding how much junk that catches. So, this buildup is just the smaller stuff that gets past the outer filter layer.

Comparison with a new filter.

Bonus besides not breathing all that crud into my lungs is my computer cases have never been so dust free.