Infrared Camera

An infrared, or thermographic imaging camera can quickly scan an entire room, allowing us to see areas inside walls with poor or missing insulation. It can show where outside air is leaking in, even around light fixtures or wall switches and outlets. It can also detect areas that may be prone to surface condensation, and therefore possible mold growth.

 images courtesy of The Energy Conservatory

In the three story building picture above, you can see the path of a serious leak, completely hidden within the wall, from a washing machine on the third floor.