I don’t see a stock app option either. But you should be able to do this with CORE.
I recently had an AC leak happen to me. Very frustrating since I have a ton of moisture sensors and a smart valve only to have a leak unrelated to plumbing. Custom leak monitoring for non plumbing issues should be added to SHM - and they should add thermostat changes as well.
I ordered more moisture sensors for my AC unit recently and will set something up in CORE unless you find a stock option I didn’t see.