When your furnace is working properly, it should give warm air without making too much noise. While it’s normal to catch your furnace making noise as it starts up, other sounds are showing your furnace needs immediate professional support.

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

1. Furnace Makes a Banging Sound

You may have a critical problem 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 a couple of problems. These include gas accumulating in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system turns dirty over the years, so that’s why it’s essential to schedule yearly furnace maintenance with Point Heating & Cooling. One of the jobs our techs do during this appointment is clean your furnace’s burners. When this part gets grimy, you may hear your furnace making a loud rumbling noise after ignition is delayed. The ensuing gas buildup may break your furnace’s heat exchanger, where natural gas transforms into warm air. Any cracks in it can discharge carbon monoxide, which is normally vented away from your home. This toxic gas can be lethal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Point Heating & Cooling advises turning it off and contacting us at 715-504-0533. Too much natural gas in your furnace or a cracked heat exchanger are dangerous troubles that require prompt attention.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to move hot air across your house. If the ductwork wasn’t put in right or is getting old, it can be loud when your furnace is on. This might be the issue if your furnace makes a banging noise when it shuts off. Contact Point Heating & Cooling at 715-504-0533 and we’ll pinpoint 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 usually is telling you there’s an electrical issue, like with its transformer, blower motor or capacitor.

Your furnace uses an internal transformer to run on the proper voltage. If wires or the box isn’t tight enough, you might notice a low humming noise in the furnace when off. Your furnace also works with a blower motor, which sends heated or cold air throughout your space, and a capacitor, which turns on the motor. If either of these pieces are going out, they will buzz when the furnace turns on.

3. Furnace Rattles

If your furnace is making a rattling noise, it may be due to something little, like an unfastened screw, or something major, like a broken part. In either case, we recommend shutting off your furnace and contacting our heating pros at 715-504-0533 for support.

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 tell you it requires 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 lubricated. We are aware that maintenance often slips your mind, but our professionals can get your furnace operating quietly again quickly.

5. Furnace Makes a Whistling Sound Like Air Escaping

When you’re detecting your furnace making a whistling noise, it’s typically due to an air leak in your ductwork. You might also notice whistling while the furnace is working if a floor vent isn’t tight. If you’ve looked at your vents but are still noticing noise, Point Heating & Cooling can assist you. It’s essential to get loose ductwork repaired quickly, as it can result in comfort troubles in your residence and increase your utility expenses.

6. Furnace Making a Grinding Noise

It’s not an encouraging sign if you notice your furnace making a grinding noise. This metal-on-metal sound usually means there’s an issue with your furnace’s blower. Turn off your furnace off instantly and contact our pros at 715-504-0533 for assistance.

When you’re getting an atypical noise from your furnace, Point Heating & Cooling is ready to support you. Contact us at 715-504-0533 to book your furnace repair appointment now.