We were first certified by FLIR back in 2007 as a thermography. Our focus at that time was to conduct thermal imaging of commercial equipment and rooftops. We had purchased FLIRs top of the P-60 high resolution thermal imaging camera. This camera's resolution was 640 lines and considered worlds best at $ 50,000.00.
Our projects were to rent helicopters, strap me in to the passenger side with the door off, hover above commercial rooftops to scan the roof looking for water leaks or above land masses to look for underground steam and water leaks. The thermo camera could see temperature differences which would indicate water that was settled beneath membrane roof sheeting. In addition we would also scan large electrical motors, electrical panels, ammonia refrigeration systems, etc.
Thermography can be a bit tricky to the end user and clients if you are not certified or have been trained. In the image above it looks like air leakage to most people. However this is thermal conduction above the window. Heat being transferred through the cladding, framing & drywall of the home that is not insulated. This may look severe but it is not.
We look for air leakage, thermal conduction, Delta T in electrical wiring and equipment, thermal transfer to provide better answers. What may look bad could be very simple or minor. Always investigate, thermography is a tool to begin with!