Slash energy costs by 30%
These gadgets can reduce power-bill sticker shock, this summer and beyond.
Check for drafts
What it does: Helps you find air leaks. Those around windows and doors, even near electrical outlets or recessed lights, force your AC or heater to work harder. Point and drag the infrared Black & Decker Thermal Leak Detector around your home; the light changes color where the temperature is significantly higher or lower. So you'll know where to caulk or weather-strip.
Payback time: Recoup the cost of the device (and the weather stripping) in under a year, based on leak-sealing savings estimates from Energy Star.
NEXT: Manage by degrees
