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8 Reasons Why Your Furnace is Blowing Cold Air

furnace blowing cold air

Homeowners in Tampa Bay rely on their furnaces to warm their homes in the winter months. With that in mind, a furnace blowing cold air represents a significant concern, especially during cold snaps. Fortunately, you can learn more about the reasons for a furnace malfunction in this guide created by the AirZone Air Conditioning & Heating team.

AirZone Air Conditioning & Heating provides Tampa professional furnace replacement and repairs guaranteed to keep you and your family warm all winter long. If your furnace has broken down, give AirZone Air Conditioning & Heating a call today at 813-750-0191. Then, read on to learn the eight most common reasons your furnace is blowing cold air.

#1: Your Thermostat Malfunctioned

Some property owners end up dealing with a furnace blowing cold air simply because of issues with their thermostat.

Experts recommend checking your thermostat settings first if the furnace produces cold air. Test the batteries in the thermostat, then all connections in the system. In many cases, changing the batteries may resolve the issue.

Alternatively, your thermostat may have worn out due to overuse. In this situation, you may need a heating professional to replace the unit. Consider adding a smart thermostat for efficient temperature management if you decide to upgrade.

#2: Someone Turned the Fan On

Is the thermostat working correctly? If so, check the blower fan setting. Some property owners leave their fans running continuously to keep air circulating or because they like the noise produced by the system.

However, constantly running the fan will cause cold air to blow through the house. This situation occurs because the fan keeps moving even when a heating cycle ends. Set your fan to automatic if your furnace is blowing cold air and determine if that changes your home’s temperature.

#3: The Pilot Light Blew Out

Do you have a gas furnace to heat your home? If so, professionals recommend checking the pilot light if it stops producing warm air. You can check the pilot light by:

  1. Turning off the furnace’s power
  2. Finding the pilot light
  3. Flipping the RESET switch
  4. Waiting about 15 minutes for gas to clear from the area
  5. Switching the RESET switch to pilot
  6. Lighting the outgoing gas
  7. Turning the RESET switch to on

After completing these steps, turn on the power to your furnace. Wait a few moments to see if the furnace kicks on and begins blowing hot air into your home before checking other parts of the system.

#4: The Filter Clogged

Furnaces in the Tampa Bay area rely on air filters to remove dust, dirt, pollen, and other particles from the air. However, the filters can develop clogs. Over time, these clogs block air from moving through the vents and prevent the furnace from working correctly.

You can remedy this problem by changing your furnace filters regularly. Doing so may prevent additional problems from developing, too. However, if your furnace has broken down due to a major clog, you can enjoy expert heating repair by AirZone Tampa Bay. The company’s technicians provide fast, effective service to commercial and residential property owners.

#5: The HVAC Ducts Developed a Leak

Furnaces use ductwork to transport hot air throughout your home. Over time, these ducts can develop small cracks or leaks. Alternatively, your installation team may have placed the vents improperly, leading to gaps in the corners.

Any imperfections in the duct system can allow warm air to escape and cold air to enter your home. Professional HVAC contractors can assess your ductwork for leaks or weak points. Then, the crews can seal the system to help you stay warm in the winter.

#6: The Fuel Tank Emptied

Some property owners in Tampa Bay use oil or propane heaters. These heaters only function if they have enough fuel to operate. Experts recommend checking your fuel levels before winter and scheduling a delivery from your fuel company if you’ve depleted your supply.

You might not require furnace repair if you’ve emptied your fuel tank. Additionally, you can avoid the problem by installing an electric furnace or a heating system that runs on natural gas.

#7: The Furnace Overheated

While it seems counterintuitive, a furnace may begin blowing cold air after it overheats. Furnaces shut off when they get too hot to prevent a fire or further damage to the system. Though they stop producing heat, the fan may continue circulating cold air.

Furnaces overheat for several reasons. Sometimes, they get too hot due to clogs in the filter system. A heating system repair specialist can assess the cause of the issue and provide you with rapid, professional repairs.

#8: A Piece of Machinery Failed

Sometimes, furnaces start blowing cold air for more serious reasons. For example, some property owners deal with a heating system breakdown due to:

  • Faulty thermocouples
  • Issues with their valve system
  • Clogs around the oil filter
  • Problems with the electronic ignition
  • Dirty flame sensors

Furnace repair professionals can step in to help with any of these issues. Crews operating around Tampa Bay like AirZone Air Conditioning & Heating can visit your property and inspect your heating system. The expert HVAC teams will come with all the tools needed to assess your furnace and determine why it broke down.

Working with a repair crew allows you to quickly identify the problem and begin repair work. In some situations, technicians may advise you to replace a broken heating system.

Contact the Professionals If Your Furnace Blows Cold Air

You don’t have to deal with the discomfort of a furnace blowing cold air. Instead, take proactive steps with emergency AC repair by AirZone Tampa Bay, FL. The company handles all heating systems, makes, and models. You can easily schedule an appointment for repairs, maintenance, or installation services in the Tampa area by calling AirZone Air Conditioning & Heating at 813-750-0191.

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