The answer to 'how to clean ductwork' is to have your HVAC ducts professionally cleaned every 3-5 years. Professional duct cleaning involves using specialized equipment to remove built-up dust, debris, and contaminants from the interior of your ductwork. This helps improve indoor air quality, extend the life of your HVAC system, and ensure efficient airflow throughout your home.
Attempting to clean your ductwork yourself is generally not recommended, as it can be dangerous and ineffective. Ductwork is often difficult to access and clean thoroughly without the right tools and experience. Improper cleaning can also damage the ducts or spread contaminants throughout your home. For the best results, it's best to hire a licensed HVAC technician to handle the job.