Wondering where that draft is coming from? Greener Gadget Top 50 Semi-Finalist Thermal Torch, designed by Gunnar Kramp, allows you to scan exterior walls for insulation deficiencies.

Poor thermal insulation in buildings causes a massive waste of energy every day. In some cases the locations of poorly insulated areas and thermal bridges are quite obvious, but in most cases they are invisible to the human eye. The Thermal Torch combines the features of a thermal camera with the features of small handsized projectors. By panning over a wall or a window frame, the thermal image is projected on the surface directly at the spot of detection.

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