Furnace Troubleshooting: What to Do Before Calling for Furnace Repair10/07/2015 You can’t depend on the weather in Rock Hill, but one thing the team at US Air Heating and Cooling 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 trouble you may think that means a furnace repair can be looming on the horizon. That may not be the case. If your furnace hasn’t been its usual, dependable self lately, there are a couple of things a homeowner can do before calling in the experts at US Air Heating and Cooling. Check the Thermostat We have had calls where all we had to do was 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 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 some time has passed since you’ve changed batteries it may be time for a change. It’s another simple fix that could save you a repair call. Check the Filter A dirty air filter can create all sorts of troubles. Not only will a dirty filter hinder your system’s efficiency and stifle air flow, it could also cause an unexpected breakdown. Changing the filter in your heating and cooling system is simple and it can play a big role in keeping your system running at its best. Check the Switches The first switch you’ll want to investigate 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 close the vents in unused rooms. This could actually lead to a furnace repair down the line. Closed vents cause higher pressure inside 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 troubles the team at US Air Heating and Cooling 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.