It’s well into the cooler months of the year, and the mercury is continuing to drop. You’ve just opened your electric bill, and are surprised to see an unexpected surge in power consumption. If this sounds familiar, then you’re probably dealing with an inefficient heating system. Unfortunately, as home furnace repair experts, we see this far too often. To help you better understand what may be causing this sudden surge in usage, here we share three common problems that can lead to an inefficient heating system.