A thermostat is designed to regulate the temperature by adjusting the air flow from the system. There are various types of thermostats, some of which change the temperature according to your habits and others that you control manually.

When the thermostat no longer regulates the temperature correctly, it might be broken. It might also be dirty, have a loose wire, need new batteries, or require something else. If your system won’t shut off or turn on, or if it doesn’t respond when you try to change the temperature, you may need to have the thermostat replaced.

Everyone has different comfort needs. Also, some homes have ceiling fans, excellent insulation, tree plantings, and other circumstances which affect the way the property ‘feels’ regardless of the number on the thermostat. The best thing to do is to experiment until you find a temperature which is comfortable for you. Then, for the sake of budget, you may wish to turn it down just a little bit in winter and up a little bit in summer to maximize energy savings.