Sealing your home’s envelope—walls, floor, ceiling and roof—can save up to 10% on annual energy costs. Some tips:
• Reduce drafts by adding weather stripping to windows and doors
• Caulk ducts, plumbing and other openings, starting in the attic
• Seal uncaulkable areas with expandable foam

This weekend, spend some time identifying and sealing all the air leaks in your home.