"Spot hidden energy leaks. Light changes color to indicate hot and cold leaks. Green light sets starting temperature. Blue light detects cold spots. Red light detects hot spots."--Container. "Heating and cooling accounts for about 50 percent of your energy usage, but the average house has enough leaks and drafts to equal a 1 sq. ft. hole. Cut down on wasteful spending with the help of the Thermal Leak Detector from Black and Decker. The TLD100 is...