We use a FLIR E5 hand held Forward Looking Infrared camera to assist in finding the following (included in price); On average the FLIR finds water intrusion, missing insulation or BOTH on 1 out of 3 pre-existing homes (1 new construction home  in 2021).

Water intrusion from ceiling , walls, doors or windows

Missing insulation

Electrical problems

Presence of insects (dependent on circumstances)

Check out the following video for FLIR uses