I found the Mainfloor with a bad condenser motor. I'm taking the motor now and will figure out if the unit is under warranty or not in the morning. If the unit has part's warranty then the cost to replace will be $350. The upstairs unit is working within normal parameters with no obvious signs of concern. 16x20x1 upstairs and 25x25x1 Mainfloor. The units have visible molding the is destructive towards overall health.