When the HVAC system in your home starts acting up, finding the problem is crucial. Many small HVAC issues have the potential to become large ones if not properly remedied. One issue you may run into during the chillier winter months in Lewisville, Texas, is cool air coming from your HVAC system’s vents. Here are five possible reasons this is occurring:

A Clogged Air Filter

An overly dirty or clogged air filter can restrict the airflow to your furnace. Once restricted, it can cause your system to overheat. When your system overheats, a safety mechanism will shut off your burners to protect it from starting a fire. If you think this may be the case, change your air filter and restart your system.

Wrong Thermostat Setting

Your problem could be as simple as the thermostat fan being set to "on." When on, your furnace will blow air, even when it’s the right temperature, causing cool air to come out of your vents. Make sure it is set to "auto."

Problems With the Pilot Light or Ignition

Cool air could be a signal that there’s a problem with the furnace’s ignition system. If your furnace isn’t lighting the fuel, it can’t heat the air and warm your home. In such instances, you’ll need a professional to examine the problem and repair it.

Inadequate Gas Supply

To heat your home, your furnace requires gas so that it can heat the air that it pushes through it. If your furnace’s gas supply is interrupted, it can’t produce the needed heat. Your system may have cut off the supply if a safety concern occurs.

Major Problems With Ductwork

Large leaks or cracks in your ductwork maybe funneling hot air out before it reaches the vents. It can also let in cold air from either the attic or crawlspace, allowing the cool air to mix with the hot air when it comes out of the vents.

If you’re having problems with cool air coming from your vents, let an HVAC service technician rectify the problem. Contact Metro Environmental Services at 972-268-6922 today to ensure you’re heating your home efficiently this winter.

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