The answer to 'how to clean air duct yourself' is that you can clean your air ducts using a vacuum cleaner with a long hose attachment or a duct cleaning brush. This helps remove dust, debris, and allergens that can build up over time, improving your indoor air quality. However, it's important to take safety precautions and follow the proper steps to avoid damaging the ductwork or spreading contaminants.
For best results, you should clean your air ducts every 1-2 years, or more frequently if you have pets, smoke indoors, or notice a lot of dust buildup. If the ductwork is heavily soiled or you have concerns about mold or pests, it's best to hire a professional duct cleaning service instead of attempting a DIY cleaning.