I swapped it out in July and it should still have had a few weeks/months left in it, but the fires apparently have caked it up. Based on previous changes of filters in the house every 3 months, this looks like about 2 years or more of dust build up. Changed it because the filter seemed to be whistling in the ducting.
Published by
Chris Aldrich
I'm a biomedical and electrical engineer with interests in information theory, complexity, evolution, genetics, signal processing, IndieWeb, theoretical mathematics, and big history.
I'm also a talent manager-producer-publisher in the entertainment industry with expertise in representation, distribution, finance, production, content delivery, and new media.
View all posts by Chris Aldrich
