I just had my air conditioning system cleaned out because it wasn't working right. Wow, the junk that came out of it was awful. The owner before me never used filters.
Did you call him to complain about that?
No, since its my house and they missed it in inspection, there wasn't much I could talk to him about.  It was gross.  Dirt, dust, and gobs of pet hair.  I was breathing it the whole time!
That's awful, my air conditioner is cleaned thankfully. 