My fiance and I have this continuing discussion at certain times of the year….basically spring and fall. I am warmer natured than she is and I like the house cool….she does not. Her perfect temperature to have the Air Conditioner and Heater system set at is about 74 degrees, mine is 68 degrees. There are times our A/C should be working when she has the heater set and running. I have even had to break down and run a fan facing my side of the bed at certain times to keep some cooler air blowing while she runs the Heater and Air Conditioner unit on warm. Fortunately, we have a newer HVAC unit in our home so our electric bills are not real expensive even with the varying temperatures. It can be quite frustrating at times when I am doing housework yet she wants the temperature set at 74 degrees. It is easy to break into a sweat when doing housework. Finally, I found the answer and I contacted the local HVAC company to inquire about the programmable thermostat. After talking to a technician I discovered that was the exact thing we needed! By having this type of thermostat I am able to set the rooms to varying temperature so our bedroom, where she spends a lot of time, can be set on 74 degrees and the kitchen, where I spend most of my time, can be set on 68 degrees. We are both happy now with the temperature of our home. Finally peace in our home regarding the comfort of both of us.