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Furnace Troubleshooting Guide

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When it comes to furnace troubleshooting there are a few common problems that can be easily diagnosed. By knowing what these problems are and how they can be fixed, you can make the right choice when it comes to furnace maintenance and repair.

Most Common Furnace Issues and Repair Solutions

Here are some of the most common furnace issues and how they can be repaired.

  • ProblemYour gas furnace pilot light won’t light or lights for a few seconds and then goes out.
  • Solution – If the area around your pilot light is dirty, you may have dust build up which is stopping your pilot light from lighting. This build up will need to be carefully cleaned from the area. There may also be a crack in the system’s thermocouple, this will involve replacing it.
  • Problem – There is no heat at all coming from your furnace.
  • Solution – No heat coming from your furnace could be due to several sources. It could be a problem with the thermostat, gas or power, or with your furnace pilot light.
  • Problem – Your furnace is not producing enough heat and your home is cold.
  • Solution – A clogged filter can cause a lack of air flow through your vents, causing your home to not heat correctly. Lack of heat could also be due to a furnace that is the wrong size for your home.
  • Problem – There are loud noises coming from your furnace or vents.
  • Solution – If you hear loud clanging, banging or popping noises it could be due to various reasons. There may be a clogged or ill-fitting filter that needs to be replaced if you replace your filter and you still hear the noises you may have mechanical issues.
  • Problem – Your heat is constantly turning on and off.
  • Solution – If your furnace is cycling on and off constantly you may need to replace your filter. If this does not resolve the problem airflow may be blocked somewhere in your vents or you may need a new thermostat.
  • Problem – Your furnace won’t turn off at all.
  • Solution – If your furnace is constantly running and you can’t switch it off it is likely you will need to replace your systems limit switch. It is best to have a professional do this for you.
  • Problem – Your furnace is not working as efficiently as it once did.
  • Solution – Without regular maintenance your furnace can get run down and dirty, this can cause your furnace to work harder, costing you more. Regular maintenance can help keep your furnace in peak condition.

Contact Michael Bonsby Heating & Cooling

If your furnace is not working effectively, contact the team at Michael Bonsby Heating & Cooling. We can help you with all your furnace repair, maintenance and replacement needs.

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