This reveals surface temperature variations which can identify anomalies in the home. The purple areas or "anomalies" in the image were checked with a moisture meter and found to be wet from a leaking shower. In all of these cases the temperature anomalies were not visible to the eye. Thermal cameras can be used to identify areas of energy loss, missing insulation, air leaks in HVAC systems, water damage, over heating electrical components and much more. A thermal camera will give you thousands of accurate temperature readings in every image, so you'll get the whole picture.
Adding thermal imaging to your home inspection can identify areas of heat loss that are invisible to the naked eye. Locate areas with missing or damaged insulation quickly by detecting the temperature differences compared to surrounding areas.