Call it CSI: Thermal Police -- energy experts armed with mostly low-tech tools but strong sleuthing skills, finding flaws that let the air inside a house go through a full exchange with the outdoors twice an hour, instead of once every two or three hours.
Correct those flaws, and heating and cooling costs are typically cut by 20 percent to 30 percent, a saving of more than $1,000 annually in some households. In addition, carbon dioxide emissions and the strain on the national electric and gas systems are reduced.
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