Question					
					<p>The biggest air leaks are typically hidden in the attic, basement, or crawlspace. Sealing those big leaks will have the biggest impact on your energy bills and comfort. Look for gaps and cracks around pipes and wires, holes, spaces for ducts (called chases), and the top or bottom of walls that are not fully covered. These holes can be sealed with long-lasting outdoor caulk, spray foam in-a-can, or sheets of foam board or plywood for the big holes.</p>