Ok i'm afraid of what my electric bill will look like ,so i need help .
I have a programmable thermostat and i set it up to be on 74 throughout the day.
The problem i'm having is that 2-3 times a day the heat goes on and keeps running for over 2 hrs straight!
Sometimes it works fine but when this happens i'm wondering if something is wrong.
The temperature says 74 but it won't cut off. It keeps going from cool to warm air and just stays on.
I would have to set it to 73 so it would click off ,but what about when i'm not at home to do that,it may just keep running.
Any ideas whats up with this system?