When your furnace is running like it should, it should give warmth without creating too much sound. While it’s expected to catch your furnace making noise as it turns on, other sounds are indicating your furnace needs immediate professional help.

Here are some of the most reported furnace noises and what they can be indicating. If your furnace is making a weird noise, our friendly heating specialists are here to fix the problem with the best furnace repair in Ellsworth, Wisconsin.

1. Furnace Makes Banging or Knocking Sounds

You may have a critical situation on your hands if you’re detecting your furnace making a banging noise. If your furnace is making a knocking noise, it might signal there could be several problems. These involve gas increasing in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system turns dirty as time passes, so that’s why it’s essential to set yearly furnace maintenance with Walter's-Eaton's Electric, Plumbing, Heating & AC. One of the jobs our technicians do during this work is clean your furnace’s burners. When this piece gets dirty, you might hear your furnace making a loud rumbling noise if ignition takes more time. The subsequent gas buildup may fracture your furnace’s heat exchanger, where natural gas transforms into warmth. Any fractures in it can discharge carbon monoxide, which is regularly released away from your home. This hazardous gas can be deadly in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Walter's-Eaton's Electric, Plumbing, Heating & AC advises turning it off and calling us at 715-318-6728. Significant natural gas in your furnace or a fractured heat exchanger are serious issues that should get prompt service.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to provide warm air around your house. If the ductwork wasn’t put in properly or is getting old, it can be loud when your furnace runs. This might be the problem if your furnace makes a banging noise when it shuts off. Call Walter's-Eaton's Electric, Plumbing, Heating & AC at 715-318-6728 and we’ll pinpoint the problem.

2. Furnace Makes a Buzzing Sound

If you notice your furnace making a buzzing noise, don’t delay calling us. A buzzing sound often is telling you there’s an electrical situation, like with its transformer, blower motor or capacitor.

Your furnace uses an internal transformer to operate on the proper 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 has a blower motor, which sends hot or cooled air around your rooms, and a capacitor, which starts the motor. If either of these components are fading, 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 can be related to something small, like an unsecure screw, or something critical, like a broken part. In either case, we advise shutting your furnace off and getting in touch with our heating pros at 715-318-6728 for help.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s running, it’s making an effort to get your attention it could use some TLC. If you’ve forgotten furnace maintenance the past few years, belts could be worn out or a bearing might need to be lubed. We realize that maintenance often slips your mind, but our professionals can get your furnace heating quietly again fast.

5. Furnace Whistles

When you’re noticing your furnace making a whistling noise, it’s frequently because of an air leak in your ductwork. You might also be aware of whistling while the furnace is running if a floor vent isn’t tight. If you’ve checked your vents but are still hearing noise, Walter's-Eaton's Electric, Plumbing, Heating & AC can provide support. It’s important to get loose ductwork repaired quickly, since it can make comfort problems in your house and drive up your gas costs.

6. Furnace Makes a Loud, Unpleasant Grinding Noise

It’s not an encouraging sign if you detect your furnace making a grinding noise. This metal-on-metal sound usually means there’s a problem with your furnace’s blower. Switch off your furnace off instantly and call our professionals at 715-318-6728 for assistance.

When you’re hearing an uncommon noise from your furnace, Walter's-Eaton's Electric, Plumbing, Heating & AC is available to provide assistance. Contact us at 715-318-6728 to request your furnace repair appointment now.