Responded to a plumbing drain issue. I found breaks and roots in waste line
Customer approved 3 lbs of Freon charged system to 18 degree temperature split
Found system frozen up, allowed unit to thaw, returned in the evening, recharged system
Examined an air conditioning unit for an $85 check out special value. Found that the unit had been backing up on the condensate drain and rusted out on the bottom. Recommend replacing