The Importance of Sealing Air Leaks in Your Home

The Importance of Sealing Air Leaks in Your Home

sealing for air leaks

If you’re looking for a way to save money on your house going into the new year, one of the easiest do-it-yourself projects you can do is looking for and sealing air leaks around the house. Why? Because that air that’s seeping out through cracks in your window sill or door is also your money seeping through—your heat (or air conditioning) is escaping your home and cold air (or hot) is coming in, making your system work harder than needed.

Typical Air Leaks

The most common locations for air leaks include doors and windows—sometimes weather-stripping might deteriorate, thus allowing air to seep through.

You can do your own test for air leaks in your home by being more observant. Do a visual inspection of your home, checking all exterior corners for cracks, outdoor water faucets for gaps, checking where your house’s siding meets with the chimney for any cracks, as well as any areas where the foundation and bottom of exterior brick/siding meet.

Inside your home, the following are more common for air leaks:

  • Electrical outlets and switch plates
  • Door/window frames
  • Attic hatches
  • Wall or window-mounted air conditioners
  • Cable TV and phone lines
  • Dryer vents
  • Electrical and gas service entrances

Windows can be a big culprit of air leaks—how does the caulk look? Are there any cracks? If you can rattle the window, it’s loose and needs attention. You might even consider replacing older, single-pane windows with more energy-efficient, high-performance windows.

Another test you can do for checking for air leakage in your home is the building pressurization test, as described by

DIY: Sealing Air Leaks

Once you’ve determined where the air is leaking in your home, all it takes is a weekend to go through and care for most of the cracks.

  • Use caulk and weather-stripping for doors and windows that leak air
  • Use caulk to seal air leaks where plumbing, air ducts or electrical wiring comes through walls, floors, ceilings and soffits over cabinets
  • Use foam sealant for larger gaps around windows, baseboard, etc.
  • When you’re not using your fireplace, make sure the flue damper is tightly closed
  • If you have leaks around fireplace chimneys, furnaces and gas-fired water heater vents, use fire-resistant materials such as sheet metal, sheetrock or furnace cement caulk
  • Can’t afford new windows at the moment? Cover your older, single-pane windows with plastic during the winter.

Taking some time now to go through your home checking for any air leaks can save you hundreds in heating and cooling costs. Remember, if you have any questions you can contact a home comfort specialist from Heat Relief anytime.

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