Furnace Troubleshooting: What to Do Before Calling for Furnace Repair10/07/2015 You can’t bank on the weather in Ballwin, but one thing the team at Holiday Heating & Air Conditioning wants you to be able to count on is your heating and cooling system. Having a comfy home isn’t a seasonal thing, it’s something you require 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 few things a homeowner can do before calling in the experts at Holiday Heating & Air Conditioning. Check the Thermostat We have received calls where we simply had to switch a thermostat from “cool” to “heat”. While changing 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. Another thing to look at while you’re at the thermostat is the battery. Almost all digital thermostats are equipped with 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 troubles. 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 easy 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 look at is the breaker for your furnace. It’s often the case that 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 shut the vents in unused rooms. This could actually lead to a furnace repair down the line. 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 troubles the team at Holiday Heating & Air Conditioning 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.