| If there’s less than five degrees difference, score 10 points. If the outside wall reading is more than five degrees below the
inside reading, score 0.
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• Do you have a fireplace? If not, add 4 points. If you have a fireplace and always keep the damper closed when it is not
being used, add 4; if you leave the damper open when the
fireplace is not in use, score 0.
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Now, time out for a little test.
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QUICKIE EXPERIMENT “B”
That Hole in the Roof
For a dramatic demonstration of how much heat is
lost up the chimney in the winter, check the fireplace
with your draft detector. Star& with the damper open,
then with it closed. You’ll be amazed. The escaping
heat is like money going up in smoke.
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