When your furnace is working like it should, it should deliver heat without generating too much disruption. While it’s common to catch your furnace making noise as it turns on, other sounds are signaling your furnace needs immediate professional support.

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

1. Furnace Makes a Banging Sound

You may have a critical issue on your hands if you’re detecting your furnace making a banging noise. If your furnace is making a knocking noise, it can signal there could be several problems. These include gas building up in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system gets dirty over time, so that’s why it’s important to set seasonal furnace maintenance with Farnell Heating & Air Conditioning Inc. One of the jobs our technicians perform during this work is clean your furnace’s burners. When this part gets grubby, you might hear your furnace making a loud rumbling noise if ignition takes longer than normal. The ensuing gas buildup can crack your furnace’s heat exchanger, where natural gas turns into heat. Any fractures in it can emit carbon monoxide, which is normally vented away from your home. This hazardous gas can be lethal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Farnell Heating & Air Conditioning Inc advises turning it off and reaching us at 251-471-2674. Excessive natural gas in your furnace or a cracked heat exchanger are serious troubles that should get prompt repairs.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to provide hot air across your home. If the ductwork wasn’t designed correctly or is getting dated, it can make a lot of noise when your furnace is on. This can be the issue if your furnace makes a banging noise when it shuts off. Contact Farnell Heating & Air Conditioning Inc at 251-471-2674 and we’ll determine the problem.

2. Furnace Makes a Buzzing Sound

If you notice your furnace making a buzzing noise, don’t hesitate to call us. A buzzing sound frequently indicates an electrical issue, like with its transformer, blower motor or capacitor.

Your furnace uses an internal transformer to run on the right voltage. If wires or the box needs to be tightened, you might hear a low humming noise in the furnace when off. Your furnace also works with a blower motor, which sends hot or chilly air across your residence, 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 Makes Rattling Sounds Like Something Is Loose

If your furnace is making a rattling noise, it could be the result of something small, like a loose screw, or something serious, like a broken piece. In either case, we advise shutting your furnace off and getting in touch with our heating pros at 251-471-2674 for help.

4. Furnace Is Making a High-Pitched Squealing Sound

If your furnace makes a high-pitched noise, like squealing, when it’s on, it’s trying to get your attention it could use 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 lubricated. We know that maintenance often slips your mind, but our techs can get your furnace operating quietly again quickly.

5. Furnace Makes a Whistling Sound Like Air Escaping

When you’re detecting 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 working if a floor vent isn’t tight. If you’ve examined your vents but are still noticing noise, Farnell Heating & Air Conditioning Inc can provide support. It’s important to get loose ductwork repaired without delay, because it can make comfort troubles in your home and inflate your heating costs.

6. Furnace Makes a Loud, Unpleasant Grinding Noise

It’s not an encouraging 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. Shut down your furnace off now and contact our professionals at 251-471-2674 for help.

When you’re noticing a weird noise from your furnace, Farnell Heating & Air Conditioning Inc is available to help. Contact us at 251-471-2674 to schedule your furnace repair appointment now.