Skip to main content
Amana Heating & Air Conditioning Dealer PA

Why Is My Furnace Blowing Cold Air?

Written by Comfort Solutions HVAC on . Posted in .

Important Advice from Your Local Heating and Cooling Company

One of the most frustrating situations to deal with in winter is a furnace blowing cold air. We receive at least one call every week from anxious homeowners expecting to troubleshoot this problem over the phone and quickly fix it themselves. This is not practical or safe!  Without the right training and tools, you could damage your expensive system and put your safety at risk.

There are many reasons for a furnace malfunction, the most common being lack of maintenance and repairs, or a system that is at the end of its service life. The only way to correctly diagnose and fix the issue is to have a trained HVAC technician perform a detailed inspection.

However, there are some useful steps you can take to help your HVAC professional resolve the issue quickly and efficiently.

What to Do If Your Furnace is Blowing Cold Air

  • Check the thermostat: If the fan is set to “On” it will continue to blow air even when the furnace is not on. That could be the reason for the cold air you are experiencing. Set the thermostat to “Auto”, turn on the furnace and observe what happens. Also check the battery on your digital thermostat. If the battery is low or no longer working, it cannot turn your heating system on. If the problem continues, please call us and we will send a technician to check and resolve the issue.
  • Wait for a few minutes after you turn the furnace on: Your furnace is unlikely to heat your home as soon as you turn it on. It takes a few minutes for the heated air to travel through the ducting system and your vents. Give it some time. We are here to help if the issue is not resolved.
  • Replace the furnace filter: A dirty filter makes your furnace work harder and can result in it blowing cold air before completely shutting down. When the filter is clogged with dirt, it blocks air flow, causing your furnace to run all the time and overheat. This could damage your heating system as well as drive up your energy bills. Change your furnace filter and see if this helps. Talk to one of our HVAC system experts if there is no change.
  • Get a new furnace:  The average lifespan of a furnace is around 12-15 years. If your system is around this age or older, start looking around for a new one. Furnaces lose their efficiency over time. Upgrading to a high-efficiency heating system (some have a 98.5% AFUE) can lower your heating bills significantly while improving your comfort.

Do not ignore or neglect a furnace that is blowing cold air. Speak with your friendly and knowledgeable comfort technicians at Comfort Solutions HVAC in Easton, PA as soon as possible.

Our trained and experienced technicians service all makes and models. We will come to your home and quickly diagnose and fix the problem. If replacement is required, we will be happy to provide a no-obligation estimate for a new furnace.

Count on us to keep your family warm and comfortable every winter.

Call us at 610-438-9300 to schedule an appointment to find out why your furnace is blowing cold air or request an estimate for our installation and maintenance services.