DON'T LET HEAT ESCAPE
WHEN AIRING YOUR HOUSE, OPEN THE WINDOWS FOR ONLY A FEW MINUTES.
IF YOU LEAVE A SMALL OPENING ALL DAY LONG, THE ENERGY NEEDED TO KEEP
IT WARM INSIDE DURING SIX COLD MONTHS.
(10 DEG.C OR LESS OUTSIDE TEMPERATURE) WOULD RESULT IN ALMOST 1 TON OF
CO2 EMISSIONS
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