When your furnace is operating like it should, it should give warmth without making too much sound. While it’s expected to notice your furnace making noise as it starts up, other noises are indicating your furnace requires immediate professional support.

Here are some of the most reported furnace noises and what they might mean. If your furnace is making a weird noise, our friendly heating specialists are here to fix the problem with the best furnace repair in Huntsville, Alabama.

1. Furnace Making a Banging Noise

You may have a critical issue on your hands if you’re noticing your furnace making a banging noise. If your furnace is making a knocking noise, it may mean there could be several problems. These range from gas building up in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system turns filthy over the years, so that’s why it’s critical to schedule yearly furnace maintenance with All Weather Heating & Air Conditioning Inc. One of the tasks our technicians perform during this appointment is clean your furnace’s burners. When this part gets grubby, you may hear your furnace making a loud rumbling noise after ignition takes longer than normal. The following gas buildup may break your furnace’s heat exchanger, where natural gas turns into warm air. Any breaks in it can discharge carbon monoxide, which is ordinarily released outdoors. This hazardous gas can be deadly in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, All Weather Heating & Air Conditioning Inc recommends turning it off and contacting us at 256-801-4701. Excessive natural gas in your furnace or a broken heat exchanger are dangerous issues that necessitate prompt attention.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to provide heated air across your residence. If the ductwork wasn’t installed right or is getting old, it can be noisy when your furnace is on. This could be the case if your furnace makes a banging noise when it shuts off. Get in touch with All Weather Heating & Air Conditioning Inc at 256-801-4701 and we’ll figure out the problem.

2. Furnace Makes a Buzzing Sound

If you hear your furnace making a buzzing noise, don’t wait 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 work on the proper voltage. If wires or the box needs to be tightened, you may hear a low humming noise in the furnace when off. Your furnace also uses a blower motor, which distributes hot or cold air throughout your home, and a capacitor, which triggers the motor. If either of these parts are failing, 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 small, like a loose screw, or something critical, like a broken component. In either case, we advise shutting your furnace off and contacting our heating specialists at 256-801-4701 for support.

4. Furnace Squeals

If your furnace makes a high-pitched noise, like squealing, when it’s heating, it’s making an effort to alert you it requires some TLC. If you’ve skipped furnace maintenance the last couple of years, belts could be worn out or a bearing may need to be lubricated. We are aware that maintenance frequently slips your mind, but our techs can get your furnace running quietly again rapidly.

5. Furnace Making a Whistling Noise

When you’re noticing your furnace making a whistling noise, it’s likely the result of an air leak in your ductwork. You could also hear whistling while the furnace is on if a floor vent isn’t secure. If you’ve checked your vents but are still sensing sound, All Weather Heating & Air Conditioning Inc can assist you. It’s important to get loose ductwork repaired fast, as it can make comfort issues in your residence and drive up your gas bills.

6. Furnace Makes Noise that Sounds Like Scraping Metal

It’s not an encouraging sign if you hear your furnace making a grinding noise. This metal-on-metal sound typically means there’s an issue with your furnace’s blower. Shut down your furnace off immediately and reach our pros at 256-801-4701 for support.

When you’re getting an atypical noise from your furnace, All Weather Heating & Air Conditioning Inc is ready to provide assistance. Contact us at 256-801-4701 to schedule your furnace repair appointment now.