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DIY Furnace Troubleshooting

It’s important to get any furnace issues resolved right away to maintain the comfort of your Maryland home. However, there are a few steps you can take before contacting an HVAC professional. Try these furnace troubleshooting tips the next time your heat stops working:

  1. Make sure your thermostat is turned to the “heat” setting: This is a more common issue than you may think. The switch can easily be moved unintentionally while you’re cleaning. If the switch is, in fact, on the correct temperature setting, make sure it’s set to a degree that will actually turn the furnace on. If your thermostat is on a low temperature, it won’t trigger the furnace to start heating your home.
  1. Check the filter: A dirty filter can block airflow, causing heat and pressure to build up. Check your filter. If it’s dirty or clogged, replace it with a new one. We recommend changing your filter once a month to ensure your furnace keeps running smoothly throughout the year.
  1. Change the batteries: Does your furnace run on batteries? If so, check for a low battery symbol. These signals are small and often go unnoticed. Change the batteries and see if your furnace starts working properly again.
  1. Check the electricity: If your furnace runs on electricity, you need to find out if it’s working properly. Most thermostats have a switch for the fan. If the fan starts running when you turn it on, then you know you’ve got power to the furnace. If the fan doesn’t turn on, you know your furnace isn’t getting electricity.
  1. Switch the circuit breaker off and back on: Go to your home’s breaker panel and look for the circuit that controls the furnace. If you notice the furnace switch seems to be in a different position than the others, you’ve found the problem. Turn it all the way off and back on. It should start working again.
  1. Relight the pilot: If you have an older furnace, it may have a pilot light. If you notice it’s not lit, there are instructions in your owner’s manual that explain how to relight the pilot. However, if you don’t feel comfortable doing this on your own, contact GAC Services and we’ll send a technician out to help you find and repair your furnace issues.
  1. Check the gas valve: If you still haven’t found out what’s wrong with the furnace, check the gas valve to make sure it hasn’t been turned off. The gas valve usually isn’t touched, but you should still check it to be absolutely sure that’s not the issue. If you have another gas appliance that is running fine, this shouldn’t be the problem.

If you still can’t locate the issue, it’s time to call in a professional. GAC Services has the experience and expertise to perform thorough furnace repairs in your Maryland home.

Schedule Furnace Repairs in Maryland

If your furnace is not keeping your Maryland home comfortable, you should call the HVAC experts at GAC Services for help. Our licensed technicians will inspect and repair your furnace to get it running efficiently again in no time. We offer reliable furnace repair in Montgomery County and Frederick County, Maryland.

To talk with a heating and cooling professional, or to schedule furnace repair services in Maryland, contact GAC Services today.

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John Micheal, MD
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The information on this website is for informational purposes only; it is deemed accurate but not guaranteed. It does not constitute professional advice. All information is subject to change at any time without notice. Contact us for complete details.