As in many other industries, appliance sales have suffered as the U.S. economy has slowed and consumers spend less. Major-appliance shipments declined 7.4 percent for the year through August, according to the Association of Home Appliance Manufacturers. But there’s one bright spot in the market: stand-alone freezers. Shipments of freezers were up 3.5 percent for the first eight months of the year and rose 13 percent in August over a year earlier; upright models saw an annualized sales jump of nearly 17 percent in August; chest models, 10 percent.Rising food prices could be a factor in the growth of freezer sales. From 2005 to 2008, the overall cost of food for home consumption was projected to climb 4 to 5 percent, according to this Wall Street Journal report. The ever-increasing tab at the checkout line has spurred more Americans to buy in bulk at warehouse clubs such as Costco and Sam’s Club, likely creating a need for more freezer space.