Why Is My Gas Furnace Blowing Cold Air?

Experiencing cold air blowing from your gas furnace can be both frustrating and uncomfortable, especially during the chilly months. Understanding the common causes of this issue can help you determine the appropriate steps to restore warmth to your home.

Common Causes of a Gas Furnace Blowing Cold Air:

1. 1. Thermostat Settings: Incorrect thermostat configurations are a frequent culprit. Ensure your thermostat is set to 'Heat' and the fan is on 'Auto.' If it's set to 'On,' the fan may blow continuously, even when the furnace isn't heating, resulting in cold air circulation.

   2. Dirty Air Filters: Clogged air filters restrict airflow, causing the furnace to overheat and shut down the burners. This safety mechanism leads to the blower circulating unheated air. Regularly replacing air filters can prevent this issue.

   3. Pilot Light or Ignition Problems: For gas furnaces, a malfunctioning pilot light or ignition system can prevent the burners from igniting, leading to cold air being blown through the vents.

   4. Insufficient Gas Supply: Issues such as a closed gas valve or an empty fuel tank can hinder the furnace's ability to produce heat.

   5. Ductwork Leaks: Leaks or disconnections in the ductwork can allow cold air to mix with the warm air, reducing the overall temperature of the air reaching your living spaces.

DIY Troubleshooting Steps:

• • Check Thermostat Settings: Verify that your thermostat is set to 'Heat' and the fan is on 'Auto.' Adjust settings as necessary.

  • Inspect and Replace Air Filters: Examine your air filter and replace it if it's dirty or clogged. Regular maintenance of air filters ensures proper airflow and system efficiency.

  • Check the Pilot Light: If your furnace has a pilot light, ensure it's lit. If it's out, follow the manufacturer's instructions to relight it safely.

  • Examine Ductwork: Look for visible signs of leaks or disconnections in accessible duct areas and seal them appropriately.

When to Call a Professional To Repair Your Furnace

If these troubleshooting steps don't resolve the issue, or if you notice unusual noises, odors, or persistent problems, it's advisable to consult a professional HVAC technician. Handling gas-related components can be hazardous without proper training. At Lakeshore Heating & Cooling, our certified technicians are equipped to diagnose and repair complex furnace issues safely and efficiently.

Our Ohio Service Areas:

We proudly serve the following communities in Lake County, Ohio:

• • Eastlake
  • Willowick
  • Willoughby
  • Mentor
  • Painesville
  • Wickliffe
  • Euclid
  • Fairport Harbor
  • Madison
  • Mentor-on-the-Lake
  • Willoughby Hills

As a family-owned and locally operated business, we are committed to providing top-notch HVAC services to our community. Our 5-star rating reflects our dedication to excellence and customer satisfaction.

Restore Your Home's Comfort Today!

Don't let a furnace that is blowing cold air disrupt your comfort. At Lakeshore Heating & Cooling, we embody our slogan, "Where Comfort Meets Kindness," in every service we provide. Contact us today at (440) 944-0072 to schedule a service. Experience the exceptional service that has earned us a 5-star reputation in our community.