When your furnace is operating like it should, it should provide heat without making too much disruption. While it’s common to hear your furnace making noise as it starts up, other sounds are indicating your furnace requires immediate professional assistance.

Here are some of the most frequent furnace noises and what they might be indicating. If your furnace is making a weird noise, our friendly heating specialists are here to assist with the best furnace repair in Auburn and Opelika, Alabama.

1. Furnace Making a Banging Noise

You may have a critical problem on your hands if you’re noticing your furnace making a banging noise. If your furnace is making a knocking noise, it might mean there could be a couple of problems. These include gas increasing in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system turns filthy over the years, so that’s why it’s critical to set yearly furnace maintenance with Farnell Mechanical, Inc.. One of the tasks our professionals complete during this appointment is clean your furnace’s burners. When this part gets grubby, you could hear your furnace making a loud rumbling noise if ignition takes longer than normal. The ensuing gas buildup may fracture your furnace’s heat exchanger, where natural gas changes into warmth. Any fractures in it can leak carbon monoxide, which is ordinarily released outside. This dangerous gas can be lethal in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, Farnell Mechanical, Inc. recommends turning it off and contacting us at 334-524-2458. Too much natural gas in your furnace or a ruptured heat exchanger are serious problems that necessitate fast service.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to deliver hot air around your residence. If the ductwork wasn’t designed right or is aging, it can be loud when your furnace runs. This might be the problem if your furnace makes a banging noise when it shuts off. Get in touch with Farnell Mechanical, Inc. at 334-524-2458 and we’ll pinpoint the problem.

2. Furnace Making a Buzzing Noise

If you notice your furnace making a buzzing noise, don’t hesitate to call us. A buzzing sound typically is telling you there’s an electrical problem, like with its transformer, blower motor or capacitor.

Your furnace depends on an internal transformer to run on the proper voltage. If wires or the box isn’t tight enough, you might hear a low humming noise in the furnace when off. Your furnace also uses a blower motor, which distributes warm or cold air across your space, and a capacitor, which turns on the motor. If either of these parts are going out, they will buzz when the furnace switches on.

3. Furnace Rattles

If your furnace is making a rattling noise, it can be due to something little, like an unfastened screw, or something major, like a broken part. In either case, we recommend shutting off your furnace and getting in touch with our heating professionals at 334-524-2458 for assistance.

4. Furnace Squeals

If your furnace makes a high-pitched noise, like squealing, when it’s heating, it’s attempting to get your attention it requires some TLC. If you’ve neglected furnace maintenance the last couple of years, belts could be worn out or a bearing may need to be lubed. We are aware that maintenance sometimes slips your mind, but our pros can get your furnace heating quietly again quickly.

5. Furnace Making a Whistling Noise

When you’re noticing your furnace making a whistling noise, it’s frequently because of an air leak in your ductwork. You could also be aware of whistling while the furnace is on if a floor vent is loose. If you’ve looked at your vents but are still hearing sound, Farnell Mechanical, Inc. can assist you. It’s critical to get loose ductwork repaired quickly, since it can make comfort issues in your house and inflate your energy costs.

6. Furnace Making a Grinding Noise

It’s not a positive sign if you hear your furnace making a grinding noise. This metal-on-metal noise often means there’s trouble with your furnace’s blower. Turn off your furnace off right away and reach our pros at 334-524-2458 for support.

When you’re hearing an uncommon noise from your furnace, Farnell Mechanical, Inc. is available to help. Contact us at 334-524-2458 to schedule your furnace repair appointment today.