When your furnace is operating properly, it should provide heat without making too much sound. While it’s normal to catch your furnace making noise as it begins running, other sounds are showing your furnace should get immediate professional support.

Here are some of the most frequent furnace noises and what they could mean. If your furnace is making a strange noise, our friendly heating specialists are here to fix the problem with the best furnace repair in Croydon, Pennsylvania.

1. Furnace Makes Banging or Knocking Sounds

You could have an urgent issue on your hands if you’re hearing your furnace making a banging noise. If your furnace is making a knocking noise, it might indicate there could be a couple of problems. These involve gas increasing in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system becomes dirty over time, so that’s why it’s essential to set annual furnace maintenance with Indoor Comfort Systems HVAC. One of the tasks our pros perform during this service is clean your furnace’s burners. When this part gets grimy, you might hear your furnace making a loud rumbling noise if ignition takes more time. The resulting gas buildup might fracture your furnace’s heat exchanger, where natural gas transforms into warmth. Any fractures in it can leak carbon monoxide, which is regularly released outdoors. This toxic gas can be lethal in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Indoor Comfort Systems HVAC urges you to turn it off and calling us at 215-741-5505. Excessive natural gas in your furnace or a fractured heat exchanger are serious troubles that necessitate fast repairs.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to provide heated air across your home. If the ductwork wasn’t installed properly or is aging, it can be noisy when your furnace runs. This can be the problem if your furnace makes a banging noise when it shuts off. Get in touch with Indoor Comfort Systems HVAC at 215-741-5505 and we’ll determine the problem.

2. Furnace Makes a Buzzing Sound

If you hear your furnace making a buzzing noise, don’t delay calling us. A buzzing sound usually means there’s an electrical issue, like with its transformer, blower motor or capacitor.

Your furnace relies on an internal transformer to operate on the correct voltage. If wires or the box needs to be tightened, you may notice a low humming noise in the furnace when off. Your furnace also uses a blower motor, which moves heated or chilly air across your house, and a capacitor, which triggers the motor. If either of these components are going out, they will buzz when the furnace turns on.

3. Furnace Rattles

If your furnace is making a rattling noise, it may be the result of something small, like an unfastened screw, or something critical, like a broken component. In either case, we urge you to shut your furnace off and getting in touch with our heating specialists at 215-741-5505 for assistance.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s on, it’s attempting to get your attention it needs some TLC. If you’ve forgotten furnace maintenance the past few years, belts could be worn down or a bearing could need to be lubed. We realize that maintenance frequently slips your mind, but our techs can get your furnace operating quietly again rapidly.

5. Furnace Making a Whistling Noise

When you’re noticing your furnace making a whistling noise, it’s typically due to an air leak in your ductwork. You may also be aware of whistling while the furnace is working if a floor vent is loose. If you’ve looked at your vents but are still sensing whistling, Indoor Comfort Systems HVAC can assist you. It’s important to get loose ductwork taken care of quickly, as it can make comfort issues in your house and drive up your gas expenses.

6. Furnace Makes a Loud, Unpleasant Grinding Noise

It’s not a positive sign if you notice your furnace making a grinding noise. This metal-on-metal racket typically means there’s a problem with your furnace’s blower. Turn off your furnace off right away and call our professionals at 215-741-5505 for help.

When you’re noticing an uncommon noise from your furnace, Indoor Comfort Systems HVAC is here to provide assistance. Contact us at 215-741-5505 to book your furnace repair appointment today.