The answer to 'how to maintain air duct sealing' is to regularly inspect and seal any leaks or gaps in your home's air duct system. Proper air duct sealing helps improve HVAC efficiency, reduce energy costs, and maintain indoor air quality.
Start by visually inspecting your air ducts for any cracks, holes, or disconnected joints. Use a duct sealing mastic or foil-backed tape to seal any gaps you find. For hard-to-reach areas, consider hiring a professional HVAC technician to perform a more thorough duct inspection and sealing. They have specialized equipment to identify and seal leaks that may be hidden from view.