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Furnace Sounds and What They Try to Tell You

Science has yet to invent a home furnace with an artificial intelligence that allows it to tell you exactly what is wrong with it and what repairs you need to do to keep it working. However, furnaces do have an innate way of sending you warnings about impending repair needs and potential breakdowns: unusual sounds. If you’ve lived with your furnace for more than a year, you already have a good idea of what noises it makes during standard operation. When any out-of-the-ordinary sounds start to emanate from the furnace cabinet, pay attention to them and then make the necessary steps to get repairs done.

Usually, this means calling in HVAC experts. Both electrical and gas furnaces pose potential health hazards to anyone who tampers with them without professional experience. Boehmer Heating & Cooling has worked on furnaces since 1933, so we have the experience necessary to diagnose the problems with your furnace in Pittsburgh, PA and fix it effectively and safely.

Common furnace warning sounds

  • Loud clicking: There is often a simple reason for this noise: loose bolts on the outside cabinet. However, if you have a gas-powered furnace and find this isn’t what’s wrong, the culprit could the ignition, or possibly even a problem with the heat exchanger or gas supply. Any of these problems should be examined by a professional as soon as possible to make sure your furnace is operating safely.
  • Groaning, squealing: This is probably the motor bearings that operate the blower fans wearing down or malfunctioning because of dust. Get repairs done before the motors need to be replaced entirely.
  • Clanking: If the belt from the blower motor to the fan becomes cracked, it will come loose and begin striking against the casing or other components. You don’t want to attempt to change the belt yourself, even if you’re familiar with doing a similar repair with a car motor fan belt. Get professionals to replace the belt before it starts to damage other parts of the furnace.
  • Rumbling, booming: Dirt and grime have probably contaminated the burners, choking off their supply of oxygen and preventing the gas jets from igniting and providing heat to the combustion chamber. This can also affect the pilot light. The burners will need to be professionally cleaned.

Boehmer Heating & Cooling has technicians ready around the clock, seven days a week, to get you the repairs you need on your Pittsburgh, PA furnace. Don’t ignore those strange sounds in your furnace—get expert help from Boehmer Heating & Cooling right away.

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