The answer to 'how to clean air duct sealing' is to regularly inspect and clean the seals around your air ducts to maintain proper airflow and energy efficiency. This involves visually checking the duct connections and seals for any cracks, gaps, or damage, and then sealing them with duct sealant or mastic to create an airtight barrier.
It's recommended to clean and seal your air duct seals every 1-2 years, or whenever you notice any issues. This will help prevent air leaks that can reduce HVAC system performance and increase your energy bills. Be sure to turn off the system before inspecting or sealing the ducts, and consider hiring a professional HVAC technician if you're unsure about the process or need more extensive repairs.