Upon arrival customer stated he had another company come out to fix a contactor and customer stated the other company let a "good amount" of R-22 Refrigerant out. During evaluation found the system to be low on refrigerant. Evaporator coils have heavy biological growth build up and has a oil spots as well. Could not confirm it to be a leak but talked with customer about refrigerant changes and even possible system upgrade as old system is 26 years old. Customer agreed to have comfort Advisor Visit for 7/22/25 10-12AM