When your furnace is running like it should, it should deliver heat without generating too much disruption. While it’s expected to notice your furnace making noise as it begins running, other disruptions are showing your furnace needs immediate professional assistance.

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

1. Furnace Making a Banging Noise

You could 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 indicate there could be a few problems. These range from gas building up in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system becomes filthy over time, so that’s why it’s important to set annual furnace maintenance with All Weather Heating & Air Conditioning Inc. One of the tasks our technicians perform during this work is clean your furnace’s burners. When this part gets dirty, you might hear your furnace making a loud rumbling noise after ignition takes longer than normal. The resulting gas buildup might crack your furnace’s heat exchanger, where natural gas transforms into warmth. Any breaks in it can emit carbon monoxide, which is ordinarily vented outdoors. This hazardous gas can be deadly in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, All Weather Heating & Air Conditioning Inc urges you to turn it off and calling us at 256-801-4701. Excessive natural gas in your furnace or a broken heat exchanger are dangerous problems that necessitate immediate repairs.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to deliver warm air across your residence. If the ductwork wasn’t put in properly or is getting dated, it can make a lot of noise when your furnace is heating. This could be the problem if your furnace makes a banging noise when it shuts off. Call All Weather Heating & Air Conditioning Inc at 256-801-4701 and we’ll figure out the problem.

2. Furnace Making a Buzzing Noise

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

Your furnace relies on an internal transformer to run on the correct voltage. If wires or the box isn’t tight enough, you could notice a low humming noise in the furnace when off. Your furnace also uses a blower motor, which moves warm or cold air throughout your rooms, and a capacitor, which starts the motor. If either of these pieces are going out, they will buzz when the furnace turns on.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it can be related to something minor, like an unsecure screw, or something serious, like a broken component. In either case, we advise shutting your furnace off and getting in touch with our heating specialists at 256-801-4701 for help.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s running, it’s trying to tell you it needs some TLC. If you’ve skipped furnace maintenance the past few 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 techs can get your furnace running quietly again quickly.

5. Furnace Making a Whistling Noise

When you’re noticing your furnace making a whistling noise, it’s frequently due to an air leak in your ductwork. You might also hear whistling while the furnace is working if a floor vent isn’t secure. If you’ve checked your vents but are still noticing sound, All Weather Heating & Air Conditioning Inc can assist you. It’s critical to get loose ductwork taken care of without delay, as it can make comfort issues in your house and increase your gas expenses.

6. Furnace Making a Grinding Noise

It’s not a good sign if you detect your furnace making a grinding noise. This metal-on-metal sound frequently means there’s a problem with your furnace’s blower. Switch off your furnace off right away and contact us at 256-801-4701 for help.

When you’re getting a weird noise from your furnace, All Weather Heating & Air Conditioning Inc is available to support you. Contact us at 256-801-4701 to schedule your furnace repair appointment now.