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, identifying issues with both the heating and cooling components. The heating unit was experiencing intermittent operation, while the air conditioning was blowing warm air. I meticulously diagnosed the problem, which involved a faulty thermostat and a refrigerant leak. After replacing the thermostat and recharging the refrigerant, I tested both systems to ensure they were functioning correctly. The client was pleased with the restored comfort and efficiency of their home's climate control.