When your furnace is operating correctly, it should give warmth without making too much disruption. While it’s common to hear your furnace making noise as it starts up, other noises are indicating your furnace should get immediate professional help.

Here are some of the most reported furnace noises and what they could mean. If your furnace is making a strange noise, our friendly heating professionals are here to help with the best furnace repair in Phoenix, Arizona.

1. Furnace Makes a Banging Sound

You could have an urgent situation 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 turns filthy as time passes, so that’s why it’s important to schedule annual furnace maintenance with Integrity AC & Heating LLC. One of the tasks our pros complete during this appointment is clean your furnace’s burners. When this piece gets grimy, you could hear your furnace making a loud rumbling noise after ignition takes more time. The subsequent gas buildup can break your furnace’s heat exchanger, where natural gas changes into heat. Any fractures in it can emit carbon monoxide, which is ordinarily emitted outside. This dangerous gas can be fatal in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Integrity AC & Heating LLC advises turning it off and contacting us at 602-971-0567. Significant natural gas in your furnace or a fractured heat exchanger are critical problems that require fast repairs.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to move hot air throughout your home. If the ductwork wasn’t installed correctly or is getting old, it can be noisy when your furnace is heating. This can be the case if your furnace makes a banging noise when it shuts off. Call Integrity AC & Heating LLC at 602-971-0567 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 usually indicates an electrical issue, like with its transformer, blower motor or capacitor.

Your furnace relies on an internal transformer to run on the right voltage. If wires or the box is loose, you might notice a low humming noise in the furnace when off. Your furnace also works with a blower motor, which moves hot or chilly air around your residence, and a capacitor, which triggers the motor. If either of these parts are failing, they will buzz when the furnace starts.

3. Furnace Makes Rattling Sounds Like Something Is Loose

If your furnace is making a rattling noise, it could be the result of something minor, like an unfastened screw, or something major, like a broken part. In either case, we advise shutting your furnace off and contacting our heating pros at 602-971-0567 for support.

4. Furnace Squeals

If your furnace makes a high-pitched noise, like squealing, when it’s running, it’s making an effort to alert you it needs some TLC. If you’ve neglected furnace maintenance recently, belts could be worn out or a bearing may need to be lubed. We know that maintenance sometimes slips your mind, but our techs 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 likely because of an air leak in your ductwork. You might also hear whistling while the furnace is on if a floor vent isn’t secure. If you’ve checked your vents but are still sensing whistling, Integrity AC & Heating LLC can assist you. It’s important to get loose ductwork repaired without delay, since it can create comfort problems in your residence and increase your utility expenses.

6. Furnace Makes a Loud, Unpleasant Grinding Noise

It’s not a good sign if you hear your furnace making a grinding noise. This metal-on-metal sound typically means there’s an issue with your furnace’s blower. Turn off your furnace off right away and contact our professionals at 602-971-0567 for assistance.

When you’re getting a strange noise from your furnace, Integrity AC & Heating LLC is available to support you. Contact us at 602-971-0567 to request your furnace repair appointment now.