> sledgehammer approach A hammerier solution would be to control the temperature seen by the thermostat (ignore the difficult RF protocol). A heating element

> sledgehammer approach A hammerier solution would be to control the temperature seen by the thermostat (ignore the difficult RF protocol). A heating element and a temperature reading could control the heat seen by the thermostat. I'm pretty sure you wouldn't need any cooling (Peltier or whatever). Just a heater and ambient cooling! Set the thermostat to a high temperature, and run the heater to make the measured temperature hotter: when you don't want the heating to run. That said, I think hacking the RF protocol is geekier and far awesomer.