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Top 5 Reasons Your Furnace Isn’t Blowing Hot Air

When your furnace isnu2019t blowing hot air, it can turn your home into a chilly, uncomfortable space. You may be wondering why the heater blows cold air or why the heat isnu2019t working in the house. There are several reasons your furnace might be struggling, ranging from minor fixes to more complex problems. In this blog, weu2019ll explore the top 5 reasons your heater is blowing cold air and how you can troubleshoot them.

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Top 5 Reasons Your Furnace Isn’t Blowing Hot Air

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  1. TOP 5 REASONS YOUR FURNACE ISN’T BLOWING HOT AIR

  2. REASON 1 - INCORRECT THERMOSTAT SETTINGS Check if your thermostat is set to "heat" instead of "cool." Ensure the temperature setting is higher than the current room temperature. Incorrect settings can cause the furnace to blow cold air instead of hot air.

  3. REASON 2 - DIRTY AIR FILTERS A clogged air filter restricts airflow, causing the furnace to overheat and shut off. Overheating can trigger a safety feature, resulting in cold air blowing from the vents. Regularly replace air filters every 1-3 months to prevent this issue.

  4. REASON 3 - PILOT LIGHT OR IGNITION ISSUES A malfunctioning pilot light or electronic ignition system can prevent the furnace from producing heat. For older systems, check and relight the pilot light if needed. For newer systems, an electronic ignition failure may require resetting or professional help.

  5. REASON 4 - BLOCKED AIR VENTS OR DUCTS Obstructed vents or ducts prevent warm air from circulating, leading to cold air blowing through the vents. Ensure that all vents and ducts are free from obstructions like furniture or debris. Professional cleaning might be necessary if blockages are severe.

  6. REASON 5 - LOW REFRIGERANT LEVELS IN HEAT PUMPS For homes using heat pumps, low refrigerant levels can cause the system to blow cold air. Heat pumps require refrigerant to transfer heat; low levels can impair this function. Always consult a professional HVAC technician to refill refrigerant and check for leaks.

  7. ENSURE WARMTH AND COMFORT WITH PROPER FURNACE MAINTENANCE Save it for future reference Follow EXPERTAIR for more such tips.

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