I keep getting this question from landlords, and I don't have a good answer. You can put boxes over a thermostat, or have the manual stops, or any of the factory limited thermostats, but all of these can be fooled by taping a bag of ice over the thermostat. A number of years ago, I came across something like a micro capsule thermostat that you wired in series with the heat signal wire and buried it in the wall a little ways away from the existing thermostat.
Does anyone have a source for something like this, or any better idea?
Does anyone have a source for something like this, or any better idea?