Thermal imaging is a technology that allows the InterNACHI INSPECTOR to show you things about a building that no one can show you using other inspection methods. Thermal imaging produces images of invisible heat energy emitted from objects and systems in the building, and allows us to measure it. Thermal imaging helps to diagnose the problem rather than merely identify symptoms, and can sometimes, but not always, identify and document: electrical faults before they cause a fire; overloaded and undersized circuits; circuit breakers in need of immediate replacement; missing, damaged, and/or wet insulation; heat loss and air infiltration in walls, ceilings, floors, windows and doors; water and moisture intrusion that could lead to mold; possible pest infestation; hidden roof leaks before they cause serious damage; air-conditioner compressor leaks; under-fastening and/or missing framing members; structural defects; broken seals in double-pane windows; energy loss and efficiency; dangerous flue leaks; damaged and/or malfunctioning radiant heating systems; unknown plumbing leaks; and overheated equipment. These color images can then be included in the inspection report, providing supporting documentation to the report. A picture is worth a thousand words.