Furnace Troubleshooting: What to Do Before Calling for Furnace Repair10/07/2015 You can’t depend on the weather in Marshalltown, but one thing the team at B & G HVAC 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 problems 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, stable self lately, there are a couple of things a homeowner can do before calling in the experts at B & G HVAC. Check the Thermostat We have received calls where all we had to do was switch a thermostat from “cool” to “heat”. While adjusting the thermostat for the season, it’s easy for a homeowner to forget to flip the switch, telling your heating and cooling system what you need it to do. Something else to look over while you’re at the thermostat is the battery. The majority of digital thermostats have a low battery warning, but if it’s been a while since you’ve changed batteries it may be time for a change. It’s another easy 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 block 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 functioning 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 simple as a tripped breaker or blown fuse. Check the Vents A common 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 gone through our troubleshooting tips and you’re still having problems the team at B & G HVAC 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.