Air sealing and duct sealing work on different parts of your home.

Home air sealing closes gaps in the building’s outer boundary. Think attic openings, basement connections and other places where unwanted air passes between inside and outside.

A blower-door assessment helps locate and measure that leakage. The repair plan should also account for ventilation, moisture and fuel-burning equipment.

Duct sealing addresses a separate network: the ducts carrying air to and from your heating and cooling equipment. Eligible hidden leaks may suit Aeroseal after preparation and repairs.

Some homes benefit from both scopes. When both are included in accepted work, the proposal should require separate results so you can see what changed in the ducts and what changed in the house itself.