Technician arrived to customers' home. Technician talk to homeowner and ask questions about home. Technician grabbed tools and started in attic unit. Technician changed filter and took electrical readings all in range. Technician inspected blower wheel and plenums all looking in good condition. Technician checked insulation and pan all in good condition. Technician continued on outside condenser unit. Technician took panels of unit off and cleaned it and waxed it after. Technician then took electrical readings of capacitor and contactor all in good condition and range. Technician then took refrigerant readings all in range aswell. Technician then talked to the homeowner about recommendations and she said that previous techs had talked to her about it but she did not want to do it just yet, mentioned that she had ducts clean and that her husband does most of the electrical and plumbing work in their home.