Recently, I completed a comprehensive heating and air conditioning repair service for a client. Upon arrival, I conducted a thorough inspection of the HVAC system to identify any issues. I discovered that the thermostat was malfunctioning, causing inconsistent temperature control. Additionally, there was a blockage in the air filter, which was hindering proper airflow. I replaced the faulty thermostat and cleaned the air filter to restore optimal performance. Furthermore, I checked the refrigerant levels and found them to be low, so I recharged the system to ensure efficient cooling. The client was pleased with the improved comfort and functionality of their HVAC system.