Air sealing is the process of closing gaps and cracks in a building's envelope to prevent air leaks. This helps maintain a consistent indoor temperature, reducing the need for heating and cooling. Common areas that require sealing include windows, doors, and electrical outlets. Effective air sealing can improve energy efficiency, leading to lower utility bills and increased comfort. It also helps reduce drafts and moisture issues, which can contribute to mold growth. Proper air sealing is an essential part of building energy efficiency and home improvement strategies.