Furnace Troubleshooting: What to Do Before Calling for Furnace Repair10/07/2015 You can’t bank on the weather in Corpus Christi, but one thing the team at McNatt Inc wants you to be able to trust in is your heating and cooling system. Having a comfy home isn’t a seasonal thing, it’s something you expect all year. When your furnace is having problems you may think that means a furnace repair can be needed soon. That may not be the case. If your furnace hasn’t been its usual, stable self recently, there are some things a homeowner can do before calling in the experts at McNatt Inc. Check the Thermostat We have received calls where we simply had to switch a thermostat from “cool” to “heat”. While adjusting the thermostat for the season, a homeowner can easily forget to flip the switch, telling your heating and cooling system what you want it to do. Another thing to look over while you’re at the thermostat is the battery. The majority of digital thermostats give a low battery warning, but if it’s been a while since you’ve changed batteries it may be time for a switch. It’s another simple 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 inhibit 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 simple and it can play a big role in keeping your system functioning at its best. Check the Switches The first switch you’ll want to check is the breaker for your furnace. It’s often the case that a problem can be as simple as a tripped breaker or blown fuse. Check the Vents A common misconception is that a homeowner should shut the vents in unused rooms. This could actually lead to a furnace repair in the future. Closed vents cause higher pressure throughout your duct system and cause your system to work harder than it needs to. If you’ve tried our troubleshooting tips and you’re still having troubles the team at McNatt 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.