Banging, Screeching and Rattling: What 6 Common Furnace Noises Signify

October 13, 2020

When your furnace is working properly, it should provide warm air without generating too much sound. While it’s common to hear your furnace making noise as it starts up, other noises are indicating your furnace requires immediate professional help.

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

1. Furnace Making a Banging Noise

You could have a critical situation on your hands if you’re noticing your furnace making a banging noise. If your furnace is making a knocking noise, it might mean there could be a couple of problems. These include gas increasing in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system becomes grimy over the years, so that’s why it’s critical to set routine furnace maintenance with West Michigan Heating & Air Conditioning Services. One of the jobs our pros do during this appointment 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 following gas buildup may break your furnace’s heat exchanger, where natural gas changes into warm air. Any breaks in it can discharge carbon monoxide, which is ordinarily released away from your home. This toxic gas can be fatal in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, West Michigan Heating & Air Conditioning Services advises turning it off and contacting us at (616) 669-3961. Too much natural gas in your furnace or a ruptured heat exchanger are hazardous troubles that should get prompt attention.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to deliver hot air across your home. If the ductwork wasn’t installed properly or is getting dated, it can be noisy when your furnace is on. This can be the problem if your furnace makes a banging noise when it shuts off. Get in touch with West Michigan Heating & Air Conditioning Services at (616) 669-3961 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 frequently is telling you there’s an electrical issue, 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 might notice a low humming noise in the furnace when off. Your furnace also uses a blower motor, which moves warm or cooled air around your house, and a capacitor, which turns on the motor. If either of these pieces are going out, they will buzz when the furnace switches on.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it can be related to something minor, like a loose screw, or something critical, like a broken component. In either case, we advise shutting your furnace off and getting in touch with our heating professionals at (616) 669-3961 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 tell you it needs some TLC. If you’ve neglected furnace maintenance the past few years, belts could be dilapidated or a bearing could need to be lubricated. We realize that maintenance sometimes slips your mind, but our professionals can get your furnace operating quietly again quickly.

5. Furnace Making a Whistling Noise

When you’re detecting your furnace making a whistling noise, it’s frequently due to an air leak in your ductwork. You might also be aware of whistling while the furnace is working if a floor vent is loose. If you’ve looked at your vents but are still sensing whistling, West Michigan Heating & Air Conditioning Services can assist you. It’s essential to get loose ductwork repaired quickly, since it can create comfort troubles in your residence and inflate your utility expenses.

6. Furnace Making a Grinding Noise

It’s not a good sign if you detect your furnace making a grinding noise. This metal-on-metal racket often means there’s a problem with your furnace’s blower. Turn off your furnace off instantly and call our professionals at (616) 669-3961 for help.

When you’re hearing a weird noise from your furnace, West Michigan Heating & Air Conditioning Services is here to support you. Contact us at (616) 669-3961 to schedule your furnace repair appointment right away.