It’s official, our thermostat sucks! We have a 40+ year old mercury thermostat and it is consistently 5 degrees off or more. It has been one of those projects that has been on the back burner for quite a while and now with the super cold winter weather upon us, I am finally forced to deal with. There are some great new options out there, and this article does a good job differentiating them for those looking to upgrade your old one. The cost savings in energy efficiency can be as great as 25%, so it may be worth looking into.