[mattmoss]

Would this be a good tool for finding air leaks (i.e. cold air coming in during the winter) in an old house? I might drop the $200-300 for one of these if it will help me find all the leaks.

Even better if the $40 Adafruit one mentioned elsewhere (https://www.adafruit.com/product/3538) worked just as well, once configured/programmed adequately.

[rbritton]

I bought one for that purpose. What it does best is show you relative temperature levels, which you can then investigate further to see if they're real or not. In my experience, some are actual air leaks, some lack of air circulation, and some lack of backing insulation.

[tonyarkles]

Yup, definitely agree. I've got one of the Seek Thermal units, and while the absolute temperature measurements aren't always that accurate, the relative temperature measurements are fantastic for finding hot/cold spots.

[retroafroman]

If you're in the USA, Home Depot also rents them by the hour/day if you don't want to spend the whole amount for something you won't use too often.