Why Is My Furnace Blowing Cold Air?

November 23, 2023

With colder weather right around the corner, the last thing any Colorado homeowner wants is a furnace that blows cold air.

This common issue can be both confusing and frustrating, especially when temperatures are below freezing outside.

Do not be left in the cold—leave any furnace repairs to a Carrier Factory Authorized Dealer to resolve. Carrier Colorado offers a complete directory with an extensive selection of reputable Carrier Dealers who have the expertise needed to address any heating, ventilation, and air conditioning (HVAC) issue.

Finding a trusted Carrier HVAC dealer in the Denver area is easier than ever. Browse our dealer directory today!

Common Causes of a Furnace Blowing Cold Air

Some possible reasons that could explain why your furnace is blowing cold air include the following:

  • Thermostat Settings
    The first thing to check when your furnace blows cold air is the thermostat. It might seem obvious, but ensuring it is set to Heat and not Cool is essential. Additionally, if the fan setting is set to On, it will blow air even when the furnace isn’t heating. Changing it to Auto ensures the fan only operates when the furnace is heating the air.
  • Overheating System
    If your furnace overheats, it may start blowing cold air as a safety measure. Overheating can occur due to restricted airflow from a dirty air filter or blocked vents. Regularly changing the filter and ensuring vents are clear can help prevent this.

    According to the U.S. Department of Energy (DOE), regular furnace maintenance can reduce the risk of a breakdown and save homeowners approximately 15 percent on their energy costs.
  • Ignition Problems
    Newer furnaces use an electronic ignition system. If this system fails, the furnace will not be able to heat the air. Ignition system failures can be due to various reasons—including electrical issues—and need professional diagnostics and repair.
  • Leaky Ductwork
    Sometimes, the problem is not with the furnace itself but with the ductwork. Leaks, tears, and holes in the ductwork can cause the heated air to escape before it reaches your living space. This issue often requires a professional to inspect and seal the ducts properly.

At Carrier Colorado, we understand how important a properly functioning furnace is to your comfort. Each of the Carrier Factory Authorized Dealers in our network is equipped with the knowledge and tools to diagnose and fix your furnace issues, ensuring your system runs efficiently and reliably.

If your furnace is blowing cold air, do not hesitate to reach out to a professional. Regular maintenance can prevent many of these issues and prolong the life of your furnace. A Carrier Factory Authorized Dealer can provide the necessary service and advice to keep your furnace in top condition.

Find a Carrier HVAC Dealer Today

Ready to resolve your Colorado home’s furnace issues? Browse our Carrier Colorado Dealer Directory today and find the expert assistance you need to ensure your home stays warm and comfortable this winter.