+1 to thermal imager. I use mine to locate hot wires, heating and cooling gaps in the roof and around windows, car maintenance, the pizza oven, and its even sensitive enough to ‘see’ studs in the wall.
Priceless on one occasion for finding leaks in the ceiling, which are notoriously hard to pinpoint.
Can also be used for looking at heat leaking into or out of your house via conduction, which can help you determine where there might be more insulation needed, or maybe a particular wall needs more shade in summer.
Priceless on one occasion for finding leaks in the ceiling, which are notoriously hard to pinpoint.