Pinellas Energy Efficiency Project
When checking for leaks around doors and windows, use a dollar bill: insert the dollar bill in the opening. If it falls out or slips out easily, the weather-stripping should be repaired or replaced. The greatest source of wasted heating and cooling energy in a home is air leaks. (You can also test your refrigerator door seal this way.)
To learn more about caulking and weather-stripping,
download this pdf fact sheet from the Florida Energy Systems Consortium.
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