Windows Really Do Leak

With all the news about record cold temperatures (it was -14°F the other morning sans wind chill) it’s interesting to note how much Windows can leak.

CIMG2616 (Small)

The temperature on the left is from a remote sensor placed outside away from the house so that it does not pick up any residual heat. The other is a sticky thermometer placed outside on a double pane window. The thermometers read to within a degree when placed near each other.

Nine degrees is a pretty steep temperature gradient.

Our house has modern, high-quality, double-pane windows and we’ve found that keeping the drapes closed keeps the heat in and measurably lowers our heating bills.

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