The answer to 'DIY air duct cleaning' is that it is generally not recommended for most homeowners. While you can attempt some basic DIY air duct cleaning, it's best to have a professional HVAC technician handle this task for safety and effectiveness. Professional duct cleaning can remove built-up dust, debris, and contaminants that may be circulating through your home's air system.
DIY duct cleaning often involves using a shop vacuum or compressed air to blow out the ducts, but this can stir up more dust and particles rather than fully removing them. Professionals have specialized equipment and techniques to thoroughly clean the ducts without making a bigger mess. They also have the expertise to identify and address any underlying issues, like mold or structural problems, that may require more extensive repairs.