Jan 03 , 2018

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Comments Off on Why is my furnace making a banging noise? 

Since your furnace is made up of metal parts, don’t be alarmed if you hear a bang or a pop now and then as the heat travels up the registers throughout your home.  However, here are some reasons for alarm that you should pay attention to:

  • Knocking noises are normal when the furnace first starts up or after it stops blowing hot air caused by expansion and contraction of the air. If the knocking noise continues while the furnace is running, you probably have a damaged belt or a bad bearing.
  • Bang noises may be result of a delayed gas ignition or a result of the metal ductwork that is expanding and contracting after the heat system’s blower starts up. Changing your air filter and making sure your home’s supply vents are in the open position may solve this problem.
  • Rattling sounds may be from a loose panel or from the furnace expanding and contracting the metal parts as it heats up and then cools down. Check the panels to make sure everything is tight.
  • Screeching noises could be a result of a belt, bearing or motor that if left unattended could result in a large repair bill.
  • Chirping noises happen if you have not used your furnace in a while. The noise should stop after the system is warmed up after a few minutes.  If it doesn’t, you may need a belt replacement.

If the strange noises from your furnaces still aren’t resolved, feel free to contact Family Air to help you figure out the best solution.  Your comfort and peace of mind is our priority.