Condensation

I am sure it would.  The  one I bought to check that a concrete floor was drying after an underfloor pipe leak subsequently proved useful for checking that the rear carpets in my Fabia were dry following attempts to cure the dreaded rear door leaks.  I also used it to confirm that a slight bulge in a plasterboard ceiling was due a water leak from a drain pipe above.   Good luck sorting out your Yeti's problem.