You turn to your furnace to provide nice, comfortable heat during the bitterly cold winter weather here in Covington, KY. But if your furnace is doing the exact opposite and only blowing cold air throughout your home, you’ve got a definite problem on your hands.

Rusk Heating & Cooling’s latest blog post will explore what causes a furnace to blow cold air, provide some troubleshooting tips for your heating system, and discuss when you should call in our HVAC contractors for HVAC repair services or new furnace installation. 

Get in touch with us today to schedule heating services in Covington, KY.


What Causes a Furnace to Blow Cold Air?

When your furnace starts blowing cold air, it can be both uncomfortable and concerning. The most common issues behind HVAC systems blowing cold air include:

  • Thermostat Problems: One common culprit is a thermostat malfunction. If your thermostat is set to “heat” but is not functioning correctly, it may not signal the furnace to produce warm air.
  • Dirty Air Filters: Clogged or dirty air filters can obstruct airflow, causing your furnace to overheat and shut down prematurely, resulting in cold air blowing through your vents. 
  • Gas Supply Issues: A gas supply issue, such as a malfunctioning gas valve or a problem with the gas line, can cause a furnace to blow cold air by preventing the proper ignition of the burners.
  • Pilot Light Issues: In older gas furnaces, a malfunctioning pilot light can prevent the burners from igniting, leading to cold air circulation.
  • Malfunctioning Thermocouple: The thermocouple is responsible for sensing the pilot light’s presence, and if it fails to do so, it prevents the gas valve from opening and the burners from producing the necessary heat for warming the air.
  • Faulty Ignition System: Modern furnaces often use electronic ignition systems. If this system fails, your furnace won’t ignite, and you’ll be left with cold air.
  • Faulty Limit Switch: If the limit switch malfunctions, it may prematurely shut off the burners, preventing the furnace from reaching the desired temperature and causing the blower motor to circulate cold air through the air ducts.
  • Lack of HVAC Maintenance: Neglecting regular furnace, heat pump, and air conditioner maintenance services from HVAC companies can lead to various problems, including cold air issues. Dust and debris can accumulate, affecting performance and your energy bills.


Furnace Troubleshooting Tips

Before you call our local HVAC company for HVAC services, you can try these troubleshooting steps to see if they fix the HVAC issues with your heating and cooling system:

  • Check the Thermostat: While this may seem obvious, check your thermostat and make sure it’s set correctly. Ensure the unit is set to heat and not air conditioning, and at the desired temperature.
  • Inspect the Air Filter: Every 1-2 months, you should replace your air filter to keep the HVAC system running correctly and maintain its energy efficiency. Inspect the air filter and, if it appears to be clogged, replace it. This may fix the issue.
  • Verify the Pilot Light: If you have an older gas furnace, check if the pilot light is lit. If the light is not on, be sure to contact our NATE-certified HVAC technicians. Attempting to repair gas-related problems without expertise can be dangerous.
  • Reset the Furnace: Turn your heating system off for a few minutes and then turn it back on to reset it. If this does not help, reach out to us for residential heating services.
  • Inspect Vents: Ensure all vents are open and unobstructed. If a room’s vents are blocked or closed, it can disrupt the airflow from the air ducts into your living spaces, causing imbalances in temperature and cold spots in certain rooms.


Professional HVAC Repair to Restore Furnace Performance

If you’ve tried to troubleshoot the issue on your own but haven’t been able to solve the problem, turn to the professionals at Rusk for furnace repair services, your local heating and air conditioning company. Our NATE-certified technicians perform a thorough inspection of your heating system to determine the cause of the cool air and recommend the necessary repairs.

The most common repairs for a furnace blowing cold air include:

  • Ignition System Repair
  • Thermostat Recalibration
  • Gas Valve Replacement
  • Thermocouple Replacement
  • Limit Switch Replacement
  • Heat Exchanger Repairs


Is it Time for a New HVAC System?

If your furnace is constantly blowing cold air, it might be a sign that your HVAC system is reaching the end of its lifespan. In such cases, HVAC companies recommend considering a replacement to maintain a comfortable home environment in Northern Kentucky.

Rusk Heating & Cooling specializes in efficient and reliable furnace installation in Covington, KY that ensures your home stays warm and cozy. Our highly-trained technicians will assess your current system, taking into account factors like age, efficiency, and repair history. If a replacement is recommended, we offer a range of high-quality, energy-efficient furnaces to suit your needs.

Upgrading to a new system not only improves heating performance but also contributes to cost savings in the long run. We can even advise you on qualifying HVAC systems that will allow you to claim tax incentives for energy efficiency upgrades. Count on Rusk Heating & Cooling for seamless furnace installation in Covington, KY, providing you with a reliable and efficient heating solution for years to come.


Prevent Furnace Repair Issues with Routine Maintenance

Regular maintenance is crucial to ensure the optimal performance and longevity of heat pumps, air conditioners, and furnaces. Scheduling routine tune ups with an HVAC contractor is a proactive approach to identify and address potential HVAC system issues before they escalate, preventing costly repair services down the line.

We recommend scheduling maintenance with our HVAC contractors twice a year in Covington, KY – once before the heating season in the fall and again before the cooling season in the spring. Our exceptional service technicians will thoroughly inspect and clean your system, checking for any worn-out components, leaks, or inefficiencies.


Choose Rusk Heating & Cooling for Furnace Repair & Replacement in Covington, KY

If your furnace isn’t providing your home with the level of comfort you expect, Rusk Heating & Cooling provides professional furnace repair and furnace installation Covington, KY, homeowners can count on. Our team will thoroughly inspect your HVAC system to determine the root cause of the issue.

From there, our HVAC contractors apply their expertise to provide you with a furnace repair solution you can depend on. Contact our HVAC company today to schedule furnace repair and replacement services in Covington, KY.