I just inspected one house with AC. I turned on the AC and I can feel air coming out from the duct but not cool air. I checked the compressor fan was working fine outside but the suction line was very dry, not sweating at all. I am wondering if the AC had low freon or was freon leakage. How will you tell the client? How do you know if low freon or leakage, will you do leakage test during home inspection?