The worst thing that can happen during the cold winter months is experiencing a breakdown with your Fort Worth, TX, furnace. However, you can stay proactive by listening to its sounds. Here are four important noises to pay attention to that may indicate it’s time for a tune-up.

1. Whistling

A whistling noise typically happens when something is obstructing the airflow within the HVAC system. Dirty air filters are one reason for the whistling because dirt, dust, and debris block air from properly circulating. Other causes of whistling sounds include:

  • Closed dampers or vents
  • Blocked returns
  • Objects in your ductwork

If your furnace is too large for your home, then it might cause whistling noises. This is a case where a professional technician will likely recommend installing a properly sized furnace.

2. Screeching or Scraping

Do you hear screeching noises coming from your furnace that sound like metal scraping against another piece of metal? If so, then the noise indicates that something has come loose within the HVAC system and requires a heating repair appointment.

3. Banging

Several possibilities exist when you hear banging sounds. An electronic ignition furnace might have an ignition system issue that requires a professional inspection.

It’s possible that the ignition isn’t initially taking place due to low gas pressure. When enough gas builds up and ignition occurs, a banging noise results.

You might also hear banging sounds as the ductwork expands and contracts. Your HVAC system’s ducts consist of thin metal that expands when warm air moves through it. This expansion sometimes produces a booming noise.

4. Clunking

Clunking sounds might occur when the fan becomes misaligned and begins knocking against other furnace parts. Turn off your furnace immediately and call us so that we can fix the problem.

Have you heard any of these noises coming from your furnace? Contact one of our friendly North Tarrant Heat & Air representatives, and we’ll set up your next furnace maintenance appointment.

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