In a very literal way, the Black and Decker Thermal Leak Detector is a heat-seeking raygun. It seeks heat, and tells you when it's not finding enough. And, when it senses a drop or increase in heat (because there is a compromised seal in a window, door, or wall joint) the "rays" (light) it fires change color. OK, maybe I'm stretching a little.
Pretty awesome though, especially for something that will only cost $39.99. There are a lot of services out there that will scan your whole house for heat leaks (and one city in the UK that is doing it for the whole city with spyplanes). But there's never been a way (aside from feeling with your hand) to do it yourself. Which is good news for homeowners, since sealing drafts can save you up to 20% on your home heating and cooling.
First you fire the gun at the wall, to give it a reference point, and then you just shoot the wall, windows and doors to find any temperature changes. You can set it to sense temperature changes of 1, 5 or 10 degrees F. So once you've gone over the house to fix any big leaks, you can start working on the smaller ones.
Via GoodCleanTech

written by Clinch, December 08, 2008
I'd rather they made something that was better (e.g. had a bigger scan area [i.e. bigger than a wall socket]) that cost a few hundred, but rented it out for a fraction of its price.
But failing that, planB would be to wait until someone else buys one, and borrow it once they've finished with it, or buy one, and sell it on once it's no longer needed.
written by kballs, December 08, 2008
written by mopo3, December 09, 2008
written by flowmaster, December 09, 2008
Do you know about emissivity? Very likely not. A perfect IR emitter (a blackbody) has an emissivity of 1., all other materials are otherwise and unless it is compensated for the temperature reading are WRONG.
Cheap devices like this usually carry an assumption of an emissivity of 0.95. To accurately measure the temperature of a variety of surfaces, the infrared thermometer needs to be able to be programmed with the emissivity of the surface that you are working with. If the thermometer doesn’t have this capability it is totally useless
written by Chris, December 11, 2008
Want to measure temperature immediately in a room, shoot it at a piece of white paper (not glossy).
These devices work well for balancing the venting in your house so that your house heats/cools evenly.
They're also fantastic for looking at your electrical breaker box looking for hot circuits that maybe overloaded and pulling too much current. If it prevents a house fire it's worth the price.
It's not that these devices are bad, you simply need to know how to use them properly.
Btw, these are also available with a lower emissivity for use in the food industry. Food inspectors use these to check out food without contact which prevents bacteria transfers, etc...
written by Ron Handke, December 15, 2008
So before you start letting your fingers talk, get you facts straight.
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DEC 08
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