Good and appropriate technical advice, IMO, and It doesn't matter if you are using an outside antenna, or you are stuck with an indoor one in an HOA Occupied Territory... It happens!
I had the same thing with a "Pulse 21" furnace a dipole mounted outdoors.
It would get cold in the house, because RF was getting into the thermostat wire and shutting the furnace down. Several hours later, it would reset itself. And so without the "instant" cause and effect, it took me a while to figure it out. A couple of ferrites on the thermostat line, and the problem was solved.
Sometimes, I wonder in general about the usefulness of a thermostat that you can adjust remotely, the Internet of Things, Hot Tea makers, and Electric Can Openers. No Doubt, someone from Shenzhen will market an internet controlled Electric Toothbrush. Or they already have.
I just adjust my thermostat to three "settings" namely, "Home" "Sleep" and "Away", and find that just doing this whilst I'm actually at home works out pretty well, with "Away" being set just before I leave the house, and then setting it to "Home" when I come home... But sometimes I do have a problem with the "Sleep" mode, in that I press that one, and then sometimes still can't fall asleep.
And if I want to save on electricity, I just turn the thermostat entirely off and: 1) Open the window when I am hot, and 2) Close the window if I am cold.
In my experience, it's much harder to mitigate "QRF", although luckily, one finds that the Inverse Square Law works in this instance, too.
My Dad would just turn down his hearing aid....

73 DE W8LV