Word of advice
Do not buy a programable themstat unless you know how to use it. I had someone buy one who basically never left the home for any length of time and is always calling me to come over and find out why the thermostat changes during the night.
The answer is simple, they fiddle with it and set up programs. The solution would be to go back to a simple thermostat that one turns up and down with a switch for heat and air.