In these days of high energy costs, it's remarkable how much you can save by simply reducing air leakage. The U.S. Department of Energy says you can save up to $67 a month. Now representatives from White Lightning caulks and sealants are holding a series of events at hardware stores called "Seal Up Savings" to educate consumers on their products and uses. The events demonstrate where the caulks and sealants can be applied, appropriate products for different applications, how to prep and how to apply. The DoE says reducing air leakage for a 1,300-square-foot home can result in savings of $67 a month in heating costs and $18 a month in cooling costs. Just caulking and weatherstripping your doors can save approximately $70 to $130, depending on the heating source, in a year.