Conducted a thorough evaluation of a forced hot air furnace. Inspected the heat exchanger for any signs of cracks or wear, ensuring it was in good condition. Checked the blower motor and fan belts for proper operation and tension. Tested the thermostat calibration and inspected all electrical connections to ensure safety and efficiency. Also evaluated the air filter and replaced it with a new one to improve airflow. The furnace is now operating efficiently and safely, ready for the heating season.