Customer had us out today because their system is not cooling. Upon arrival we noticed that there is an 18 year old Goodman heat pump system. Homeowner informed us that she had other companies out and had other clothes were only wanted to get the system running without having to replace it. We noticed that the system was completely Empty of refrigerant indicating a leak within the system. We also noticed that the control board on the air handler was very badly burned however, it was still operable. The blower wheel was very dirty and needed to be cleaned. Homeowner approved to have evaporator coil replaced. System is cooling at time of departure.