Performed a return visit to the home to complete the scheduled heating system repair. Our technician replaced the Lennox control board, installed a new Trane flame sensor, and upgraded the dual fuel thermostat for precise comfort control and efficient heating operation. After installation, the system was thoroughly tested and confirmed to be running smoothly. Our customer was very pleased with the results—his heating system is now operating safely, efficiently, and ready for the colder season ahead. Another successful service visit by our trusted HVAC team!