When your furnace is operating like it should, it should give heat without creating too much noise. While it’s common to catch your furnace making noise as it starts up, other noises are signaling your furnace should get immediate professional support.

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

1. Furnace Makes a Banging Sound

You may have a serious situation on your hands if you’re noticing your furnace making a banging noise. If your furnace is making a knocking noise, it can indicate there could be a few problems. These include gas increasing in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system turns grimy over the years, so that’s why it’s essential to set yearly furnace maintenance with Walter's-Eaton's Electric, Plumbing, Heating & AC. One of the things our pros complete during this appointment is clean your furnace’s burners. When this component gets grimy, you may hear your furnace making a loud rumbling noise when ignition is delayed. The resulting gas buildup may fracture your furnace’s heat exchanger, where natural gas changes into warm air. Any cracks in it can emit carbon monoxide, which is regularly released away from your home. This hazardous gas can be deadly in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Walter's-Eaton's Electric, Plumbing, Heating & AC recommends turning it off and calling us at 715-318-6728. Too much natural gas in your furnace or a ruptured heat exchanger are critical issues that should get fast service.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to move hot air across your house. If the ductwork wasn’t put in 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. Get in touch with Walter's-Eaton's Electric, Plumbing, Heating & AC at 715-318-6728 and we’ll figure out the problem.

2. Furnace Makes a Buzzing Sound

If you observe your furnace making a buzzing noise, don’t delay calling us. A buzzing sound often indicates an electrical problem, like with its transformer, blower motor or capacitor.

Your furnace relies on an internal transformer to operate on the right voltage. If wires or the box is loose, you might detect a low humming noise in the furnace when off. Your furnace also works with a blower motor, which distributes heated or chilly air throughout your rooms, 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 Makes Rattling Sounds Like Something Is Loose

If your furnace is making a rattling noise, it could be related to something minor, like an unsecure screw, or something critical, like a broken component. In either case, we urge you to shut your furnace off and getting in touch with our heating professionals at 715-318-6728 for support.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s on, it’s making an effort to alert you it could use some TLC. If you’ve skipped furnace maintenance the last couple of years, belts could be worn down or a bearing may need to be greased. We know that maintenance frequently slips your mind, but our techs can get your furnace operating quietly again fast.

5. Furnace Makes a Whistling Sound Like Air Escaping

When you’re detecting your furnace making a whistling noise, it’s typically because of an air leak in your ductwork. You could also notice whistling while the furnace is on if a floor vent isn’t tight. If you’ve looked at your vents but are still hearing sound, Walter's-Eaton's Electric, Plumbing, Heating & AC can help. It’s critical to get loose ductwork taken care of quickly, since it can make comfort issues in your home and drive up your energy bills.

6. Furnace Making a Grinding Noise

It’s not an encouraging sign if you hear your furnace making a grinding noise. This metal-on-metal sound often means there’s a problem with your furnace’s blower. Shut down your furnace off promptly and reach our professionals at 715-318-6728 for assistance.

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