Performed a.c maintenance in Citrus Heights. Unit is a Payne Package unit on side of house. Has small hole in plenum where air is leaking. Condenser coil guards are missing and has been pressed on so fins are flattened in some spots. Proper gas line and whip. Proper placement of service disconnect. Inside unit has some debris from trees above it. Inside of unit is full of dust and spiderwebs. Vacuumed out debris in unit. Quickly wiped down burner housing to get rid of dust buildup on burners causing smell when heat is on. Vacuumed out compressor compartment and cleaned up spiderwebs. Checked all electrical connections and are okay. Checked capacitor and is in range 13.9uf of 15. Checked refrigerant levels and are slightly low. Freezing over suction line inside unit. Will return on Thursday after 2pm Customers agreed to terms of charging with R22 per pound. Will charge depending on how much refrigerant I have to add. Will use scale to accurately weigh in refrigerant.