Completed HVAC maintenance and tune-up. Inspected and cleaned the condenser and evaporator coils, checked refrigerant levels, and ensured there were no leaks. Tested the thermostat for accuracy and calibrated it if necessary. Lubricated all moving parts, including the blower motor and fan. Checked and tightened all electrical connections. Replaced the air filter and tested the system for proper airflow and efficiency. This comprehensive tune-up ensures the HVAC system operates at peak performance, improves energy efficiency, and extends the unit's lifespan. Regular maintenance is essential for optimal system functionality.