Reducing the amount of air that leaks in and out of your home through air sealing is a cost-effective way to cut heating and cooling costs, improve durability, increase comfort, and create a healthier indoor environment.

Air leaks can occur anywhere in the home where cracks or openings exist. They can make your home feel drafty and uncomfortable and place an unnecessary strain on heating and cooling equipment. Leaks around windows, doors, and other openings are the most obvious, but there are a variety of other places where gaps exist.

Did You Know?

The average home has enough air leakage to add up to a two-foot square hole. That’s like leaving a medium-sized window wide open 24 hours a day.

Common Problems

  • Drafty rooms
  • Ice dams on the roof in the winter
  • Dirty insulation
  • High heating or cooling bills
  • Air leaking around baseboards or outlets
  • Gaps or penetrations in the foundation

Do-it-yourself: Tips for sealing basic air leaks

  • Caulk and weatherstrip doors and windows that leak air.
  • Caulk and seal air leaks where plumbing, ducting, or electrical wiring comes through walls, floors, ceilings, and soffits over cabinets.
  • Install foam gaskets behind outlet and switch plates on walls.
  • Replace door bottoms and thresholds with ones that have pliable sealing gaskets.
  • Keep the fireplace flue damper tightly closed when not in use.


Our energy advisors can help you identify potential sources of air leaks in your home and connect you to a qualified trade partner that can address them.

There is no obligation and because we are a nonprofit, you can count on our advice to be unbiased.

Call 513-562-4831 or click below to schedule a free consult.

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