Conducted annual maintenance on a 1993 Bryant air conditioner. All mechanical components of the system check out at this time. Upon inspection of the unit the technician found the disconnect box to be loose and falling from the building. The customer stated he was aware of the issue and did not want to complete any repair due to the age of the unit and the type of refrigerant it uses no longer being available. Technician also spoke to customer about adding a surge protector to the unit to which the customer tonight at this time.