When the furnace in your Farragut, TN, home runs, it’s normal for it to make some noise. However, if your furnace starts making unusual sounds or runs louder than it once did, that could indicate a problem. Here are some of the sounds malfunctioning furnaces make and what causes them.
Rumbling Noises
One of the most common sounds a furnace may make when it needs repair is rumbling. A rumbling furnace usually indicates that you have one or more dirty burners. The sound results from soot or residue interfering with the proper mixing of fuel and oxygen.
A faulty pilot light can also cause a rumbling noise inside your furnace. Most modern furnaces use electric ignition systems instead of a pilot light, but if you have one, consider replacing your furnace.
Rattling Sounds
Another sound your furnace could make when it needs attention is rattling. Most of the time, a furnace rattles because it has a loose access panel. However, some more serious causes warrant professional attention.
Rattling can also come from a cracked heat exchanger in your furnace. It can allow carbon monoxide to escape into your home, so it requires urgent repair. If you hear rattling and can’t easily find the noise source, turn off your furnace, and schedule repairs immediately.
Grinding or Scraping Noises
Finally, grinding or scraping noises may result from problems with your furnace’s blower fan. Grinding sounds can indicate failing bearings in your blower fan. If you ignore those too long, your blower fan could seize and require replacement.
Scraping noises often point to problems with your blower fan’s wheel. They could result from a damaged blade or a loose motor shaft wheel. In either case, you’ll need a professional HVAC technician to diagnose and fix the problem.
If the furnace in your Farragut, TN, home starts making unusual sounds, don’t ignore them. Call 1st Choice Heating and Air right away to make a furnace repair appointment.
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