Performed maintenance for one system. Zoned ductwork upstairs and downstairs. Indoor equipment functioning properly, drains are clear. Dampers opening and closing. Outdoor is a single stage compressor. Talked to the homeowner about once it’s time for upgrade I’d recommend either two stage or variable speed for a zoned system. For now we just changed the capacitor 45+10 mfd with a turbo 200. Replaced air filter and washed condenser coil with water only.