The answer to 'how long does air duct sealing last' is that properly installed duct sealing can last 10-15 years or more. Duct sealing involves applying a specialized sealant to gaps and cracks in your home's ductwork to improve airflow efficiency and prevent air leaks. When done correctly, this sealing can maintain its effectiveness for a decade or more, helping to keep your HVAC system running efficiently.
Over time, ductwork can develop small cracks and gaps due to normal wear and tear, which can cause air leaks and reduce the effectiveness of your HVAC system. Properly sealing these gaps with a long-lasting sealant helps to maintain the integrity of your ductwork and keep your system operating at peak performance. Homeowners should plan to have their ducts re-sealed every 10-15 years to ensure optimal efficiency and energy savings.