Having furnace problems or think you may need a furnace repair? Before you call an expert there are several things you can do to avoid a possible unnecessary service call if your furnace is not heating properly! I don’t want to be too obvious, but… -Check your thermostat. Make sure the battery is not dead and all the setting are working correctly. -Next, if you have liquid propane, check your fuel levels. If they are okay, then it’s to the furnace room. Bring a flashlight, a piece of paper and a pen. Double check that the furnace is plugged in (yes, some of them have plugs!) All furnaces should have a master safety switch. It looks like a light switch most of the time. Make sure it’s turn on. If you’re experienced and comfortable with an electrical tester, use one to make sure your electricity is functioning properly. There are many types of furnaces and varied types of controls. Any one of them may be keeping you in the cold. The basic furnace controls monitor the flue gases, the pilot ignition sequence, the gas flow, combustion air flow and air circulation flow. Additionally there are control boards and other electrical controls. If you’re adventurous, you can open the furnace and find an electrical diagram that may help you understand the furnace. I must stress that if you choose to work on your furnace yourself, please be careful. There are several places you or someone in your family could be hurt. If you choose to call MasterTech, write down the brand name on that pen and paper. We would be proud to provide you with experienced assistance in repairing your furnace and not only keep your family warm, but safe too!