Originally Posted by laman
I change my inner filter when it is not white anymore. It starts looking kind of a light grey color. It takes a while before this happens. I usually change the outer filter year and a half to two years all depends on how dusty it is.
Our inner filters are blue. Dealer told us to watch for small holes in them, when you see them it's time to change. That's what we do but they never do get dirty.
I may be changing the outer more than I need to but it gets real dusty here at times.
We do blow the outer, from the inside out, every day. Again, this is what our dealer has said we should do, been wondering if this may be overboard.