FLIR - Thermal Imaging for improved energy efficiency

​Thermal image cameras use infrared radiation to detect things which are otherwise invisible to the naked eye. The FLIR or, Forward Looking InfraRed cameras has myriad uses which includes night vision, law enforcement, security, building inspections etc. Many of us may have seen footage of police making use of FLIR technology in helicopters as they track a suspect. 
Many building inspectors make use of FLIR cameras to complete energy audits of residential and commercial buildings. Many countries make use of FLIR cameras to detect properties wasting energy so that they can offer information and advice for residents on how to better insulate their home, use less energy and thereby save big on their heating bills. 
FLIR cameras help in creating a heat map of a building which would show areas which are cold and which are hot. This allows a visual representation of where energy is being lost, thereby improving chances of making the building more energy efficient.