Perform 1 system diagnostic for main unit for front of office. Unit is 11 years old, found improper filter, dirty filter, water in pan, growth on supply and duct work, no te flood protection, unit low on charge, duct work laying on the floor, improper drain line run with improper pitch, dirty blower wheel denser coil and improper high voltage entering into furnace. Due to age of unit and commercial use recommend replacing system and getting unit up to code and to repairs issues found. Customer did not want to do any repairs or get a free estimate at this time. Collected diagnostic over the phone only.