Seasonal preventive maintenance is complete, and the system is working properly. The interior of the air handler has been sanitized, and the blower motor has been tested. Concerns: The evaporator coil has severe corrosion on the back right corner, and the coil is gradually deteriorating. This issue was not observed during the last tune-up. We recommend checking it again in the next six months to ensure the condition doesn’t worsen. Recommendation: UV light installation is recommended to prevent biological growth and its spread throughout the duct system.