Performed clean and check on all 3 AHUs, both humidifiers, all 3 heat pumps; checked filters, changed humidifier pad P110-3545, inspected and tested all electrical components, drains, humidifier solenoids, water supply, humidifier drains, measured temperature rise, measured amp draws, tested capacitors, defrost cycle. Found bad capacitor on upstairs heat pump and replaced it. Customer renewed maintenance agreement. All systems are operating normally at this time.