How do you change the filter on a air conditioner for a goodman ck24-1b?

To change the filter on a Goodman CK24-1B air conditioner, first, turn off the power to the unit for safety. Locate the filter access panel, usually found on the front of the air handler or inside the return air duct. Remove the old filter, noting its size and orientation, and replace it with a new filter, ensuring it fits snugly and follows the airflow direction indicated on the filter frame. Finally, restore power to the unit and check for proper operation.