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" More than anything else, our homes need to keep us dry and comfortable. While handling rain is straightforward--the roof leaks or it doesn&amp;#039;t--keeping heat in its place is a slippery issue. Air leaks account for up to 15 percent of the heating and cooling budget in many homes, and more heat seeps through the walls. Insulation and sealing options are getting better, however. Some of these improvements make good DIY projects; others are best left to the pros. Either way, the first tool you need is knowledge. Click here to download a FREE pdf of how your home&amp;#039;s insulation works. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.popularmechanics.com/home/how-to/a893/3922342/>