Winter is here. And so, it’s time to fix those cold air leaks. That’s where Black and Decker’s Thermal Leak Detector comes in. Your current method of sliding your fingers down window seams until you feel cold air works okay, but the leak detector takes a high tech approach.

It detects temperature changes as small as a single degree. When it finds a trouble area where cold air is leaking in, a blue spotlight points you towards the problem. Pretty handy little tool for $40. Once it starts detecting leaks and you start sealing them, it will pay for itself in no time.

You can get one in January. Or in the Spring of 2009. Hard to say since the site lists both dates.

[Black and Decker]