There are a lot of different components in your HVAC systems, but you don’t have much direct interaction with most of them. However, you have plenty of interaction with your thermostat. It is the device with which you control the entire HVAC system, and you need it to function properly.
That is why we recommend that you change the batteries in your thermostat before the start of the heating season. The last thing that you want to do is wake up in a freezing house in the morning, just because your batteries died. Following are few points of consideration regarding your thermostat in Fresno, CA.