Sealing ducts is one of the best ways to improve your home's comfort and energy efficiency. The cost of sealing ducts depends on the current state of the ducts, the complexity of the system, and the accessibility of the ducts. If your ducts are already sealed and insulated, but those measures have deteriorated, then it will cost more to remove the old insulation, clean the ducts, and install new materials. Duct sealing isn't cheap, but neglecting it will end up costing more in the future. An extensive duct system that fits an old house will be quite complicated to properly seal and insulate, which will increase the cost.
The work involved in sealing the air ducts will be the most important factor in determining the price. As mentioned, duct accessibility also plays an important role in determining the price of a duct sealing project. If you want to seal your ducts this way, along with basic joint sealing, this will add a lot of time to the project. Sealing your ducts prevents unconditioned air from outside from entering your home and mixing with conditioned air inside your ducts, reducing energy efficiency. Aeroseal duct sealing is an efficient spray that is injected under pressure into the ducts, effectively sealing every crack and crevice from the inside. In addition to sealing your ducts, it's a good idea to insulate them as well.
This is especially important if the ducts are in an uninsulated attic or basement, as they must be protected from extreme temperatures for the air conditioning system to work efficiently. You must also treat air pollutants as hazardous, and sealing your ducts is the first step to preventing poor indoor air quality. This duct sealing solution is perfect for making heating and cooling (HVAC) equipment more efficient. Obviously, larger, more difficult to access ducts will take longer to seal properly than easily accessible ducts in a small home. If your ducts are not sealed or insulated, the cost of the project will be higher than if the duct joints are already sealed.
