Installed a 3&1/2 ton Comfortmaker condensor approximately 6 weeks ago (CACO42AKC4). Homeowner called yesterday complaining the unit is brand new, so how come the coil is all full of grass clippings and dirt so quickly, and is this normal? Now, I can handle the homeowner, but just for fun can someone tell me how much air is that unit moving, in CFM's or tons or however the correct way that figure is measured? Thanks.