The answer to 'air duct sealing vs' is that air duct sealing and air duct cleaning are two different HVAC services that serve different purposes. Air duct sealing is the process of finding and sealing any leaks or gaps in your home's ductwork to improve energy efficiency and indoor air quality. Air duct cleaning, on the other hand, involves professionally cleaning the interior of your ductwork to remove built-up dust, debris, and contaminants.
Air duct sealing is generally more cost-effective and has a higher return on investment, as it can reduce your energy bills by up to 20% by preventing conditioned air from escaping through leaks. Air duct cleaning is more of a maintenance task that should be done every 3-5 years to keep your HVAC system running efficiently and improve indoor air quality. The costs for each service can vary depending on the size of your home and the complexity of the job, but duct sealing is typically less expensive than a full duct cleaning.