Why Is My Furnace Blowing Cold Air?
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Why Is My Furnace Blowing Cold Air?

The last thing you want in the dead of winter is a heating malfunction. But sometimes our systems act up, and you may be experiencing some furnace issues. One common issue you may be experiencing is your furnace blowing cold air instead of the hot air it should be blowing. What are some reasons for this happening and how can you fix it?

Thermostat Issues

It’s possible that your thermostat is malfunctioning, or perhaps someone changed the setting on it. The thermostat should not be set to “auto” – it should be on “on”. With this setting, your heat will run continuously and will blow hot air non-stop. Check to see if it’s on the correct setting, and if it’s not, you know it’s most likely just a matter of switching it over.

Dirty Air Filter

Dirty air filters can often be the culprit of HVAC issues, especially when it comes to your heating. If your air filter is dirty or old, it won’t be working as well, therefore impacting the airflow and causing the furnace to overheat. That will most likely cause the burner to shut down, explaining the lack of hot air being produced.

Malfunctioning Pilot Light

The pilot light is an essential component of a gas heater; it ignites the gas that then powers the furnace. Without it, the furnace won’t be powered up and it won’t be able to produce hot air to send out into your home. It’s possible for the pilot light to go out, especially in older furnaces. It needs to be relit in order for your furnace to work properly again, which should be done by a professional.

Low Gas Supply

If you have a gas furnace, having a low gas supply can easily cause cold air to be blown from your heating system. If your furnace doesn’t receive enough gas, it’s designed to then deactivate. Because of that, once it lacks gas supply, you’ll need to call an HVAC technician to repair your furnace and restore the gas so it can produce hot air again.

Leaking Air Ducts

Any holes or leaks in your air ducts will cause issues with your heating. Leaking ducts can impact your home in a lot of ways, one of which is hot air escaping before it makes it through your vents into your home. An HVAC technician will be able to locate the holes and repair them so the hot air can then flow to the places it needs to.

Cracked Heat Exchanger

The heat exchanger is another vital component of your heating system. Heat exchangers transfer heat from one place to another in order to ensure the air being released is hot. If the heat exchanger is cracked, then not only when will your air not be hot, but you’re also at risk of carbon monoxide poisoning, which is why it’s extremely important to get it checked by an HVAC professional as soon as possible.

Contact AnyDay Heating & Cooling Today

Don’t be stuck in the cold this winter. If you have an HVAC emergency with your furnace or heating system, we encourage you to call a professional from our team as soon as possible. Whether it’s an emergency or simple repair or maintenance, our technicians are on standby to help you. For furnace repair near Wake Forest, NC, and surrounding North Carolina areas, give us a call today.

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