Upon arrival performed maintenance open 2 air conditioning systems. Opened up entire systems outdoor and washed out coils completely. Checked components to verify that the system wont have any issues in the summer. Refrigerant levels are in range. Replaced filters that client provided. Went to the attic, dusted off all electrical components. Ducting is very dirty inside. Blower wheels have a lot of dirt & debree build up. Verified secondary motor controls in range. Motors are in range. - Very dirty ducts - Dirty blower wheel - Washed outdoor coils - Filters replaced - refrigerant levels in range. System was reset tested and fully functional upon departure.