I have a vacation home I rent out (differenet people every week). Some of the people run the thermostat as low as they can for the entire week. Of course the ac unit freezes up, not to mention the outrageous electric bills. The basic solutions (internet contolled, lockbox and hidden thermostat) all have their drawbacks.

I was wondering if there is a way to put a governor or some type of control to place limits on how cool the compressor will cool, no matter how low the thermostat is set to.

Thank you for your help.

Yes, you can put a fixed thermostat wired in series in the return duct which would prevent the unit from going below the fixed temperature of the sensor.

* Accustat® limiters wire in series with existing thermostats to prevent heating or cooling temperatures from exceeding chosen limits.
* Duct limiters (for forced air systems) sense return air temperature. Wall mount limiters sense room air temperature.
* With slight modification, limiters may be used as primary thermostats.
* Input voltage: 18–26 Vac
* Wall mount models are in standard plastic case
* Sensors are packaged and sold separately. Specify temperature setpoints when ordering.

http://www.longviewweb.com/psgaccustatlow.html

www.heatpro.us energy businessmen's knowledge

Yes, you really have to find out the MAKE and MODEL to get good answers. There IS more than one machine made.