Priced below $2,500, the TiS Thermal Imager provides a lower-priced option for diagnosing moisture intrusion, energy loss, missing insulation, HVAC problems, and electrical overheating, says the manufacturer. The unit, which can survive a 6 1/2-foot drop, features manual focus and a 3.7-inch display screen that is 30% larger than comparable image screens. Professional reporting software is included.