What Should I Do if My Furnace is Running But Blowing Cold Air in Taylor, TX?

When your furnace starts blowing cold air instead of the cozy warmth you are expecting, it can be frustrating, especially during the chilly months when you rely on it the most. Understanding why this happens and how to address the issue can save you time, money, and discomfort. Absolute P&M Services will share a breakdown of the common causes and what you can do to fix them.

The Pilot Light Is Out

For older gas furnaces, a pilot light ignites the burners. If the pilot light goes out, the furnace cannot produce heat, and you will feel cold air instead. To correct pilot light issues, try:
• Locate the pilot light assembly and follow the manufacturer’s instructions to relight it.
• If the pilot light won’t stay lit, there may be an issue with the thermocouple or gas supply, contact a professional for assistance.

Dirty or Clogged Air Filters

Restricted airflow due to dirty or clogged filters can cause your furnace to overheat. When this happens, safety mechanisms may shut off the burners, leaving only the fan blowing cold air. To improve the air flow, you will want to:
• Check your air filter and replace it if it’s dirty.
• Aim to replace filters every 1-3 months, depending on usage and the type of filter you use.

The Furnace Is Overheating

Outside of a dirty air filter, other issues like blocked vents or malfunctioning components can cause the furnace to overheat. When the system overheats, it may shut down the burners as a protective measure. If your furnace is overheating, try to:
• Ensure vents and registers are clear of obstructions like furniture or curtains.
• If the problem persists, call an HVAC technician to inspect and service your furnace.

Issues with the Gas Supply

A disruption in the gas supply can prevent the burners from igniting, resulting in your furnace blowing cold air. If you are having a problem with your furnace’s gas supply check:
• Other gas appliances in your home to see if they are working properly.
• Make sure the gas valve to the furnace is open.
• Contact your gas company if you suspect a supply issue.

Failing Ignition System

Modern furnaces use an electronic ignition system to light the burners. If the ignition system fails, the burners won’t light, and the furnace will circulate cold air. If your furnace will not fire up you may need to:
• Turn off the furnace and reset it to see if the ignition system works correctly.
• If the problem persists, an HVAC professional may need to repair or replace the ignition system.

Central Forced Air Furnace Heating Maintenance, Repairs, Replacement & More in Santa Fe, Tomball, Sugar Land, Galveston, Austin & Greater Houston, Texas

While some furnace issues can be resolved with simple troubleshooting, others require the expertise of an HVAC technician. If you’ve tried the above solutions and your furnace is still blowing cold air, it’s time to call in the pros. Regular maintenance and timely repairs can extend the life of your furnace and ensure it operates efficiently. Don’t wait until it’s too cold to address these problems, schedule a professional inspection with Absolute Plumbing & Mechanical today to keep your home warm and comfortable.

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