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 found that the thermostat was malfunctioning, causing inconsistent temperature control. I replaced the faulty thermostat and calibrated the system to ensure optimal performance. Additionally, I performed a complete system check, including cleaning and inspecting the air filters, coils, and ductwork. I also tested the system's refrigerant levels and added more as needed. The client was pleased with the improved efficiency and comfort of their HVAC system.