We sometimes use infrared cameras, in conjunction with other tools using during our energy audit to evaluate the building envelope. The blower door test usually gives us an accurate idea of how the house is operating as a system, as well as helping us to identify specific problem areas. We might use an infrared camera to help us find, for example, hidden gaps in insulation inside a wall, but often we can obtain all the information we need to evaluate a home during our walkthrough examination and the blower door test. Thermal imaging with an infrared camera is not always necessary to determine which measures could be implemented to make a building more energy efficient.
