When your furnace is running like it should, it should provide warm air without creating too much noise. While it’s normal to hear your furnace making noise as it begins running, other noises are signaling your furnace should get immediate professional help.

Here are some of the most reported furnace noises and what they might be indicating. If your furnace is making a weird noise, our friendly heating pros are here to assist with the best furnace repair in Streamwood, Illinois.

1. Furnace Making a Banging Noise

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 a couple of problems. These include gas building up in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system turns grimy over the years, so that’s why it’s essential to book seasonal furnace maintenance with Pure Comfort Heating and Air Conditioning. One of the tasks our techs do during this work is clean your furnace’s burners. When this component gets grimy, you could hear your furnace making a loud rumbling noise when ignition takes more time. The subsequent gas buildup may break your furnace’s heat exchanger, where natural gas changes into warm air. Any breaks in it can leak carbon monoxide, which is ordinarily released away from your home. This hazardous gas can be lethal in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, Pure Comfort Heating and Air Conditioning recommends turning it off and calling us at 630-313-2509. Excessive natural gas in your furnace or a ruptured heat exchanger are serious issues that necessitate prompt service.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to provide hot air throughout your residence. If the ductwork wasn’t designed right or is getting dated, it can be loud when your furnace is on. This may be the case if your furnace makes a banging noise when it shuts off. Contact Pure Comfort Heating and Air Conditioning at 630-313-2509 and we’ll determine the problem.

2. Furnace Making a Buzzing Noise

If you hear your furnace making a buzzing noise, don’t delay calling us. A buzzing sound often indicates 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 is loose, you may notice a low humming noise in the furnace when off. Your furnace also uses a blower motor, which distributes warm or chilly air across your house, and a capacitor, which triggers the motor. If either of these components are fading, 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 may be the result of something small, like a loose screw, or something serious, like a broken component. In either case, we advise shutting your furnace off and contacting our heating professionals at 630-313-2509 for assistance.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s attempting to get your attention it needs some TLC. If you’ve forgotten furnace maintenance the past few years, belts could be worn out or a bearing might need to be lubricated. We are aware that maintenance often slips your mind, but our technicians can get your furnace operating quietly again rapidly.

5. Furnace Makes a Whistling Sound Like Air Escaping

When you’re hearing your furnace making a whistling noise, it’s likely because of an air leak in your ductwork. You might also notice whistling while the furnace is running if a floor vent isn’t tight. If you’ve looked at your vents but are still sensing sound, Pure Comfort Heating and Air Conditioning can help. It’s critical to get loose ductwork repaired without delay, as it can create comfort issues in your house and inflate your gas bills.

6. Furnace Makes a Loud, Unpleasant Grinding Noise

It’s not a positive sign if you notice your furnace making a grinding noise. This metal-on-metal racket frequently means there’s an issue with your furnace’s blower. Shut down your furnace off instantly and contact us at 630-313-2509 for support.

When you’re getting a weird noise from your furnace, Pure Comfort Heating and Air Conditioning is available to support you. Contact us at 630-313-2509 to book your furnace repair appointment today.