Save up to 10% easily on cooling or heating costs by reducing air leaks. Add weather stripping around windows and doors to reduce air drafts.  Caulk or use expandable gap filler foam around air ducts, plumbing openings, wall openings, etc.

Great Stuff Gap Filler insulating foam sealant expands to fill those bigger cracks that caulk cannot handle.

Use weather stripping to seal up drafty areas around doors and windows.