Why Is My Furnace Making a Weird Noise?

October 7, 2016

A furnace that emits more than a low hum is cause for concern. If any odd sounds are coming from your home heating system, do not shrug them off as merely the inner-workings of this highly complex piece of technology. These noises can be an indication that there could be a serious problem with your furnace. It is best to address the noise now before it turns into an even more inconvenient and expensive problem down the line.

The HVAC experts here at Rick’s Heating & Cooling have the experience necessary to decipher furnace noises and determine exactly what is wrong. Reach out to us right away if you hear any strange sounds coming from your HVAC equipment!

Furnace Noises & What They Mean

If you hear an occasional minor popping noise or the furnace humming along, do not panic. These are the typical sounds heating systems make! However, if your furnace produces a banging noise when it turns on, it could be in an indication that the furnace’s burners are coated with dirt, dust, or other grimy substances. Dirty furnace burners are unable to ignite in a timely manner, which means gas will likely accumulate and produce the banging noise you hear. It is possible for these minor explosions to compromise the heat exchanger, resulting in an expensive repair at some point in the future.

If there is noise coming from your air ducts, it is possible that they are expanding and contracting when the blowers start and stop. The source of the problem could be unstable ducts, ducts that are too small, unopened vents, or even a jammed air filter.


If you hear what sounds like metal rubbing against metal (or a scraping noise), the system’s blower wheel is likely malfunctioning. Turn off the furnace right away and reach out to Rick’s Heating & Cooling for professional assistance. The blower wheel might have loosened to the point that it is smacking against the blower casing. Such a scenario requires a professional HVAC repairman’s assistance in order to tighten the wheel properly. It is also possible that the blower wheel is broken to the extent that it must be replaced.

A squealing sound is an indication that the blower belt has frayed or slipped out of place. This high-pitched noise could also be a sign that the shaft bearings require lubrication. Alternatively, it could be an indication that the blower motor is broken and must be either repaired or replaced.

Furnace Repair Services in the Cincinnati, OH Area

Letting a noisy furnace continue to operate is a recipe for disaster! Nip the problem in the bud by reaching out to the professional HVAC specialists at Rick’s Heating & Cooling. Our team will analyze the problem, identify its source, and perform the appropriate repair. We do it all, from re-positioning blower belts to oiling shaft bearings and cleaning off furnace burners.

At Rick’s Heating & Cooling, our number one goal is providing dependable, professional service for our customers. We understand that your time is very valuable, so we schedule all appointments with a 2-hour window frame with the availability of a call-ahead so you are not just sitting around waiting on a service technician. We offer free in-home estimates on any new system installation.  With over three decades of experience in the HVAC industry, Rick’s is prepared to tackle all your heating and cooling problems.

Do not let your noisy furnace jeopardize your budget and comfort. Rick’s Heating & Cooling is here to diagnose the problem, perform the necessary repairs, and get your home heating system back to normal. We service all of Morrow as well as the surrounding Cincinnati area. Give us a call at 513-899-6005 or contact us online to learn more about our HVAC services.