The answer to 'DIY air duct cleaning' is that it is generally safe to do some basic air duct cleaning yourself, but there are important safety precautions to take and situations where professional help is recommended. DIY air duct cleaning can help improve indoor air quality and energy efficiency, but should be done carefully to avoid damaging the ducts or introducing contaminants into your home.
For a basic DIY air duct cleaning, you'll want to start by thoroughly vacuuming the visible areas of your air ducts using a vacuum with a HEPA filter. You can also use a duct cleaning brush or whip tool to loosen any built-up debris. Be sure to wear a mask and protective eyewear during the process. You may also want to consider using a duct cleaning solution or sanitizer, but be cautious with chemicals and follow the product instructions closely.