The answer to 'DIY air duct cleaning cleaning' is that it is generally safe for homeowners to perform basic air duct cleaning, but there are some important safety precautions to consider. Air ducts should be cleaned every 3-5 years to remove built-up dust, debris, and allergens that can circulate through your home.
Before starting, make sure to turn off the HVAC system and wear a mask and eye protection. Use a vacuum with a HEPA filter to gently remove debris from the ducts, taking care not to damage the ductwork. Avoid using chemicals or pressurized air, as these can spread contaminants. If you have extensive mold, asbestos, or other hazardous materials in your ducts, it's best to hire a professional air duct cleaning service.