Performed fall maintenance on a Carrier Infinity 96 furnace. Inspected the heat exchanger for cracks and cleaned the burners to ensure optimal combustion. Checked the thermostat calibration and inspected the blower motor for wear. I also replaced the air filter and cleared the condensate drain. Verified that the ignition system and safety controls were functioning properly. The Carrier system is now ready for efficient operation during the colder months ahead.