Why is the Air Coming Out of My Furnace so Cold

To keep your house warm and pleasant, it’s crucial to maintain your furnace in excellent operating order. However, there are times when the furnace can start blowing cold air, which can be quite frustrating, especially during the cold season. In this post, we’ll look at several potential causes of chilly air flowing from your furnace and possible solutions.

Thermostat Problems

Your heating system’s brain is the thermostat. It controls the inside temperature and instructs the furnace to generate heat. If your thermostat isn’t working properly, it can be sending the wrong signals to your furnace, which would make it blast frigid air. Verify that your thermostat is operating properly and is set to the appropriate temperature. If it’s not, you might need to replace it or have it repaired.

Filter for Dirty Air

A filthy air filter is another potential cause of chilly air flowing from your furnace. When the air filter gets clogged with dirt and debris, it can restrict airflow to the furnace, causing it to overheat and shut off. When this happens, the furnace may start blowing cold air to prevent it from overheating. To ensure that your furnace operates well, change your air filter often.

Pilot Light Problems

The gas that warms the furnace is ignited by a pilot light in older furnaces. The furnace won’t be able to generate heat and will instead blast cold air if the pilot light goes out. Check the furnace’s handbook for instructions on how to relight the pilot light if you think it may be out. If you’re not sure how to do it, it’s best to call a professional furnace repair Vaughan service to handle it.

Gas Supply Problems

Your furnace may not be able to generate enough heat and blast cold air if it is not receiving enough gas. Check your gas supply to ensure that it’s not interrupted or shut off. Turn off the gas supply right away and get a professional to handle the issue if you think there could be a leak.

Faulty ignition system

The gas that warms the furnace is ignited by the ignition mechanism of the furnace. The furnace won’t be able to create heat and will instead blast cold air if the ignition system is broken. It’s important to contact a reputable furnace repair Vaughan provider if you feel that the ignition system isn’t working properly.


Having a furnace that blasts chilly air may be quite annoying, particularly in the winter. But you may find the issue and resolve it with a little troubleshooting. Call a reputable furnace repair Vaughan firm if you’re unsure about the issue. To keep the furnace operating well and to avoid malfunctions, regular maintenance is also necessary. To maintain your furnace in excellent operating order, change your air filter often and arrange yearly furnace maintenance.

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