When your furnace is running correctly, it should give warmth without making too much disruption. While it’s expected to hear your furnace making noise as it begins running, other sounds are indicating your furnace should get immediate professional support.

Here are some of the most common furnace noises and what they could mean. If your furnace is making a weird noise, our friendly heating specialists are here to help with the best furnace repair in Ellsworth, Wisconsin.

1. Furnace Makes Banging or Knocking Sounds

You might have a critical issue on your hands if you’re hearing your furnace making a banging noise. If your furnace is making a knocking noise, it may indicate there could be a couple of problems. These range from gas increasing in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system gets filthy as time passes, so that’s why it’s essential to set routine furnace maintenance with Walter's-Eaton's Electric, Plumbing, Heating & AC. One of the jobs our technicians do during this appointment is clean your furnace’s burners. When this part gets grubby, you could hear your furnace making a loud rumbling noise when ignition takes longer than normal. The ensuing gas buildup can break your furnace’s heat exchanger, where natural gas transforms into warmth. Any fractures in it can leak carbon monoxide, which is ordinarily vented away from your home. This toxic gas can be deadly in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, Walter's-Eaton's Electric, Plumbing, Heating & AC recommends turning it off and contacting us at 715-318-6728. Significant natural gas in your furnace or a cracked heat exchanger are critical troubles that necessitate fast repairs.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to deliver warm air around your residence. If the ductwork wasn’t installed properly or is aging, it can be loud when your furnace is heating. This could be the case if your furnace makes a banging noise when it shuts off. Contact 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 hear your furnace making a buzzing noise, don’t wait to call us. A buzzing sound typically means there’s an electrical situation, like with its transformer, blower motor or capacitor.

Your furnace depends on an internal transformer to work on the right voltage. If wires or the box needs to be tightened, you could notice a low humming noise in the furnace when off. Your furnace also uses a blower motor, which moves hot or cold air throughout your rooms, and a capacitor, which triggers the motor. If either of these parts are going out, they will buzz when the furnace switches on.

3. Furnace Makes Rattling Sounds Like Something Is Loose

If your furnace is making a rattling noise, it can be the result of something minor, like an unfastened screw, or something serious, like a broken part. In either case, we recommend shutting off your furnace and calling our heating specialists at 715-318-6728 for help.

4. Furnace Is Making a High-Pitched Squealing Sound

If your furnace makes a high-pitched noise, like squealing, when it’s running, it’s attempting to get your attention it needs some TLC. If you’ve neglected furnace maintenance the last couple of years, belts could be worn out or a bearing could need to be lubed. We are aware that maintenance frequently slips your mind, but our techs can get your furnace running quietly again rapidly.

5. Furnace Whistles

When you’re hearing your furnace making a whistling noise, it’s typically because of an air leak in your ductwork. You may also notice whistling while the furnace is running if a floor vent isn’t secure. If you’ve examined your vents but are still sensing noise, Walter's-Eaton's Electric, Plumbing, Heating & AC can assist you. It’s critical to get loose ductwork repaired quickly, as it can make comfort problems in your residence and drive up your heating costs.

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 noise often means there’s trouble with your furnace’s blower. Switch off your furnace off promptly and contact us at 715-318-6728 for assistance.

When you’re noticing an uncommon noise from your furnace, Walter's-Eaton's Electric, Plumbing, Heating & AC is here to help. Contact us at 715-318-6728 to book your furnace repair appointment today.