The answer to 'how to clean air duct yourself' is that you can clean your air ducts yourself, but it's important to take the proper safety precautions. Start by turning off your HVAC system and covering any vents or openings to prevent dust from circulating. Then, use a vacuum with a long hose attachment to remove any visible dirt or debris from the ducts. You can also use a flexible duct cleaning brush to loosen and remove any built-up debris. Be sure to wear a mask and gloves to protect yourself from dust and allergens.
While DIY air duct cleaning is possible, it's generally recommended to have a professional clean your ducts every 3-5 years to ensure they are properly maintained and to improve your indoor air quality. Professional cleaners have specialized equipment and training to thoroughly clean your ducts without damaging them.