Thermal image of a human hand
Thermal imaging, also known as thermography, detects heat loss in a home by taking a picture of it. These pictures show a two-dimensional image of an area of the home in multiple colors ranging from black for the coldest spots to white for the hottest spots. Thermal imaging is commonly offered as part of a pre-purchase home inspection, and is readily available to homeowners who want to decrease their home's energy consumption.
Outside Air Leaks
A thermographic inspection usually begins with the home's exterior. It can show the homeowner exactly where warm air is leaking out in winter or cool air in summer, depending on which is the greater concern. Windows without thermal panes and poorly fitting doors appear clearly. It also shows areas where insulation has been installed incorrectly, has shifted out of position or is missing altogether.
Other Leaks
The inspector can check a home for interior air leaks in the attic and basement and also in ductwork, floors and ceilings. It can even help find water leaks in roofs by showing where air is leaking when it's not raining.
Other Home Applications
Oak Ridge National Laboratories has called thermal imaging "a significant tool" in understanding how homes can be designed for better energy efficiency.
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