The answer to 'DIY air duct cleaning' is that it is generally safe and effective for homeowners to clean their own air ducts, but there are some important safety precautions to take. Regular duct cleaning can help improve indoor air quality and extend the life of your HVAC system.
Start by turning off the power to your HVAC system and using a vacuum with a HEPA filter to remove dust and debris from the vents and visible duct surfaces. You can also use a duct cleaning brush or compressed air to loosen and remove buildup. Be sure to wear a mask and goggles to avoid breathing in any particles. After cleaning, you may want to consider having your ducts professionally inspected to ensure there are no underlying issues.