Air leaks around doors, windows, and vents that cause drafts will put an extra burden on heating and cooling systems. These are the easy, low-cost seals to make in raising your home’s energy efficiency. Apply weatherstripping around doors and windows, then caulk any gaps or cracks in the walls, floors, and ceilings. Larger gaps around pipes and cables can effectively be sealed with expanding foam or spray foam insulation.

This minimizes air leakage and also prevents the loss of heat in winter and the absorption of heat in summer. It cuts down on the amount of energy used, furthering a healthier interior environment.