How to Troubleshoot a Furnace That’s Blowing Cold Air?

Are you feeling cold air coming from your furnace when it’s supposed to be heating your home? Don’t panic yet, as this is a common problem that troubleshooting can efficiently resolve. As a reputable air conditioning company, Campbell Air Conditioning is always here to help you with comprehensive AC Service in Moody, Al, and surrounding areas.

Here are a few tips on how to troubleshoot a furnace that’s blowing cold air:

• Check the Thermostat Settings:

  The foremost thing you should do is check the thermostat settings. Make sure that it’s set to the desired temperature and set to heat mode. If the thermostat is set to “cool” or “off” mode, your furnace will blow cold air even if the room temperature drops below the set point.
  
  

• Replace or Check the Air Filter:

  The air filter is responsible for filtering out dust and debris from the air before it enters your furnace. If the filter is dirty, it can block the airflow, which can cause your furnace to overheat and shut down. This can result in cold air being blown into your home. Replace or clean your air filter regularly to ensure it’s not clogged.
  
  

• Check the Pilot Light:

  If you have an older furnace with a pilot light, check to see if it’s lit. If it’s not, relight it according to the manufacturer’s instructions. If it won’t light or stay lit, you may have a faulty thermocouple, a safety device that shuts off the gas supply if the pilot light goes out. You’ll need to call our professional HVAC technician to replace the thermocouple.
  
  

• Check the Gas Supply:

  If your furnace is not receiving enough gas, it won’t be able to heat your home. Check if the gas valve is open and the supply is turned on. If you smell gas, turn off the gas supply immediately and call a professional HVAC technician.
  
  

• Inspect the Ductwork:

  If there are leaks or blockages in your ductwork, it can cause the heated air to escape before it reaches your rooms. Inspect your ductwork for any visible signs of damage, such as cracks, gaps, or loose connections. Seal any gaps or leaks using duct tape or sealant, and make sure all connections are tight.
  
  

• Call a Professional HVAC Technician:

  If you’ve tried all of the above steps and your furnace is still blowing cold air, it’s time to call our professional HVAC technician. They have the knowledge, experience, and tools to diagnose and fix problems quickly and efficiently.

A furnace blowing cold air is a common problem that troubleshooting can quickly resolve. By following these simple steps, you can save time and money by resolving the issue independently. However, if you’re uncomfortable performing these steps or unable to resolve the problem, don’t hesitate to call our professional HVAC technician for reliable AC repair in Moody, Al, and surrounding areas.