Clanging, Hissing and Rattling: What Six Typical Furnace Noises Indicate

When your furnace is operating like it should, it should provide warm air without creating too much noise. While it’s normal to hear your furnace making noise as it begins running, other sounds are indicating your furnace should get immediate professional assistance.

Here are some of the most frequent furnace noises and what they could mean. If your furnace is making a weird noise, our friendly heating professionals are here to assist with the best furnace repair in Columbia, Mississippi.

1. Furnace Making a Banging Noise

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 may mean there could be a few problems. These involve gas building up in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system becomes filthy over the years, so that’s why it’s important to schedule annual furnace maintenance with Watts Electric & AC. One of the tasks our professionals perform during this service is clean your furnace’s burners. When this piece gets grimy, you could hear your furnace making a loud rumbling noise after ignition takes longer than normal. The ensuing gas buildup might break your furnace’s heat exchanger, where natural gas turns into warm air. Any fractures in it can discharge carbon monoxide, which is regularly emitted outdoors. This dangerous gas can be fatal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Watts Electric & AC urges you to turn it off and contacting us at 601-736-7362. Too much natural gas in your furnace or a cracked heat exchanger are dangerous troubles that necessitate prompt service.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to deliver hot air across your home. If the ductwork wasn’t installed correctly or is getting dated, it can be loud when your furnace is heating. This can be the problem if your furnace makes a banging noise when it shuts off. Get in touch with Watts Electric & AC at 601-736-7362 and we’ll figure out the problem.

2. Furnace Making a Buzzing Noise

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

Your furnace depends on an internal transformer to operate on the right voltage. If wires or the box needs to be tightened, you could detect a low humming noise in the furnace when off. Your furnace also works with a blower motor, which distributes hot or chilly air across your space, 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 could be the result of something minor, like an unsecure screw, or something serious, like a broken component. In either case, we recommend shutting off your furnace and contacting our heating professionals at 601-736-7362 for support.

4. Furnace Is Making a High-Pitched Squealing Sound

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s attempting to get your attention it requires some TLC. If you’ve forgotten furnace maintenance the last couple of years, belts could be worn down or a bearing might need to be greased. We know that maintenance sometimes slips your mind, but our professionals can get your furnace heating quietly again rapidly.

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 hear whistling while the furnace is operating if a floor vent is loose. If you’ve examined your vents but are still sensing noise, Watts Electric & AC can help. It’s important to get loose ductwork repaired without delay, since it can make comfort issues in your home and drive up your energy expenses.

6. Furnace Makes Noise that Sounds Like Scraping Metal

It’s not a positive sign if you hear your furnace making a grinding noise. This metal-on-metal racket typically means there’s an issue with your furnace’s blower. Turn off your furnace off instantly and reach our professionals at 601-736-7362 for support.

When you’re noticing an atypical noise from your furnace, Watts Electric & AC is available to help. Contact us at 601-736-7362 to schedule your furnace repair appointment now.