This air filter does not work very well, I have used it for 9 months now and cleaned it twice, noticing only large particles in it and no "browning" or dark, dirty areas of the filter. When I rinse it, no dirt, dust, etc. I started using it this spring then cleaned it after 3 months of use. It's easy to rinse in a large sink, drains well and dries in 24 hours. I use a standard filter while this one is drying.
Seeing no dirt after the first cleaning, I left it in for 6 months, periodically checking it. I have one of these new fancy 'smart' thermostats that tells me my AC and heat ran for an average of about 4 days of the month. That's a lot. After 6 months, there was just a few large particles (that didnt even clean out), see picture. All the pictures of this filter were as I cleaned it, so darker areas in the filter are of it being wet. I will return this filter and try to get store credit.
Hi SteveVa. I'm sorry we did not meet your expectations. Thank you for your detailed feedback. I will share your comments with the team. ~ Meghan, WEB Products