Keep your hard-earned dollars from going out the window, baseboard, or outlet plate by finding costly drafts and leaks with the new TLD100 Energy Series thermal leak detector from the Black & Decker energy saver series. Heating and cooling account for 53-percent of household energy costs. Hidden gaps and cracks in a home can add up to as much lost energy as an open window. Finding leaks and drafts, however, can be costly and requires a professional to conduct expensive tests and audits.