When it comes to heating and cooling your home, your thermostat is arguably the most important component of your HVAC system. This is because, if it stops working, your system won't turn on.

If your thermostat won’t turn on, the device can’t tell the furnace when to turn on. So, if you have a programmable thermostat, check to ensure the display is active, the furnace is on ...

Turns out there's a magic number for your thermostat setting in the winter, experts say. Sixty eight degrees is ideal. But if you're looking for a ballpark, anywhere around 70 degrees is a good target ...