Home weatherization is the process of improving a home's energy efficiency by sealing leaks and adding insulation. This helps to keep warm air inside during the winter and cool air inside during the summer, reducing the need for heating and cooling systems. Common methods include caulking windows, adding weatherstripping to doors, and insulating attics and walls. By investing in weatherization, homeowners can lower their energy bills and enhance comfort. Additionally, it can reduce the home's carbon footprint, contributing to environmental sustainability. Programs and incentives may be available to assist with the costs of home weatherization improvements.