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What Causes a Furnace to Stop Heating?

3D illustration of furnace

Furnaces are very reliable appliances for heating your home – especially if they are gas-powered. But even the best furnaces can have problems from time to time. But what is it that causes a furnace to stop heating completely?

It’s a problem none of us want to face. We all expect our heaters to work great and meet our heating needs. But if you’re having furnace troubles and need furnace service in Conyers, GA, our team can help, We’ve fixed it all and we’ve seen it all, so troubleshooting isn’t a problem. There are a few common issues we see that cause a furnace to stop heating. 

Thermostat Settings

This may seem obvious, but sometimes furnaces problems are simple user errors. We get so accustomed to using our thermostats that it becomes second nature – we don’t even think about it. Sometimes that can lead us to overlook simple settings that we are missing. If your furnace stops heating your home, check the following thermostat settings before giving us a call: 

  • Heat mode is selected
  • Temperature is a few degrees above the current room temperature
  • The battery indicator is not on (your thermostat may need new batteries)
  • The breaker is on in the circuit box (the breaker may need to be reset)

If none of these troubleshooting steps help and your furnace is still not working, move on to the next step. 

Replace the Air Filter

Your air filter can get clogged over time with dirt and debris. This is the one source of airflow into your heater, so if the filter is clogged the airflow is compromised. Your heater may begin to work harder to bring fresh air into the system. 

Eventually, the heater’s components overheat in this effort and the system shuts off as a precaution. Replacing the air filter regularly is a great way to prevent this from happening. If your furnace still isn’t working, it may be time to give us a call. But there are a couple more things you can check. 

Furnace Access Panel

Depending on the type of furnace you have, it may come with a safety control called an access panel. If the access panel’s connection to your furnace is loose or gets compromised, the furnace won’t work as it should. If this happens, give our team a call. You definitely want a professional to handle any connections within the heating system. 

Air Vents

You don’t want to intake vent where your air filter is to be blocked. The same goes for air vents where the heated air blows out into your home. If air vents are blocked by furniture or other items, the heated air can back up in the system and cause it to shut down. You want to make sure that every vent is completely clear so that your furnace can function properly.

If you’ve tried all of these things and your furnace still isn’t heating, we can help. There may be an issue inside the system you can’t see. It’s possible that a component is loose or something needs to be lubricated to it can move with ease. 

Your Comfort Is OUR Business. Schedule an appointment today to get your furnace heating again.

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