Furnace Troubleshooting: What to Do Before Calling for Furnace Repair10/07/2015 You can’t depend on the weather in Carpentersville, but one thing the team at Controlled Comfort HVAC Inc wants you to be able to trust in is your heating and cooling system. Having a cozy home isn’t a seasonal thing, it’s something you require all year. When your furnace is having problems you may think that means a furnace repair can be expected in your future. That may not be the case. If your furnace hasn’t been its usual, reliable self lately, there are a couple of things a homeowner can do before calling in the experts at Controlled Comfort HVAC Inc. Check the Thermostat We have received calls where we simply had to switch a thermostat from “cool” to “heat”. While setting the thermostat for the season, a homeowner can easily overlook flipping the switch, telling your heating and cooling system what you would like it to do. Something else to look at while you’re at the thermostat is the battery. Most digital thermostats have a low battery warning, but if it’s been some time since you’ve changed batteries it may be time for a switch. It’s another painless fix that could save you a repair call. Check the Filter A dirty air filter can create all sorts of complications. Not only will a dirty filter cripple your system’s efficiency and stifle air flow, it could also cause a sudden breakdown. Changing the filter in your heating and cooling system is effortless and it can play a huge role in keeping your system running at its best. Check the Switches The first switch you’ll want to look at is the breaker for your furnace. Occasionally a problem can be as easy to fix as a tripped breaker or blown fuse. Check the Vents A typical misconception is that a homeowner should seal the vents in unused rooms. This could actually lead to a furnace repair down the road. Closed vents generate higher pressure throughout your duct system and cause your system to work harder than it needs to. If you’ve been through our troubleshooting tips and you’re still having issues the team at Controlled Comfort HVAC Inc are always there for you to make sure all of your home comfort needs are met. Give us a call at or set up an appointment with us online using our online scheduler.