I recently 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 refrigerant leak in the AC unit, leading to inefficient cooling. I replaced the faulty thermostat and repaired the refrigerant leak. After ensuring the system was functioning correctly, I tested both the heating and cooling functions to confirm optimal performance. The client was pleased with the restored comfort and efficiency of their HVAC system.