On arrival homeowner wanted to get a tune up on both systems. I inspected both the downstairs and upstairs condenser and found no fault on the downstairs however the charge on upstairs was below factory specs. I followed by inspecting the furnaces to bot the upstairs and downstairs and found no faults on either one of the systems. I recommend the homeowner to have the upstairs system topped off with r22 refrigerant to have the system working properly for inspection. I cleaned both condensers and tested operations. The upstairs and downstairs a/c systems are working properly at this time.