Banging, Screeching and Rattling: What 6 Typical Furnace Noises Indicate

October 13, 2020

When your furnace is operating like it should, it should deliver warmth without creating too much sound. While it’s common to hear your furnace making noise as it starts up, other sounds are signaling your furnace requires immediate professional assistance.

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 professionals are here to fix the problem with the best furnace repair in Wyandotte.

1. Furnace Making a Banging Noise

You might have a serious issue on your hands if you’re hearing your furnace making a banging noise. If your furnace is making a knocking noise, it can signal there could be several problems. These involve gas accumulating in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system becomes dirty as time passes, so that’s why it’s essential to schedule yearly furnace maintenance with Gee & Missler Heating & Air Conditioning. One of the tasks our technicians do during this appointment is clean your furnace’s burners. When this piece gets dirty, you could hear your furnace making a loud rumbling noise when ignition is delayed. The ensuing gas buildup may break your furnace’s heat exchanger, where natural gas turns into warmth. Any breaks in it can discharge carbon monoxide, which is ordinarily released away from your home. This hazardous gas can be deadly in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Gee & Missler Heating & Air Conditioning advises turning it off and calling us at 734-363-8907. Excessive natural gas in your furnace or a broken heat exchanger are serious troubles that require fast attention.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to provide hot air around your residence. If the ductwork wasn’t installed right or is aging, it can make a lot of noise when your furnace runs. This might be the issue if your furnace makes a banging noise when it shuts off. Call Gee & Missler Heating & Air Conditioning at 734-363-8907 and we’ll determine the problem.

2. Furnace Making a Buzzing Noise

If you hear your furnace making a buzzing noise, don’t hesitate to call us. A buzzing sound frequently is telling you there’s an electrical situation, like with its transformer, blower motor or capacitor.

Your furnace uses an internal transformer to work on the correct voltage. If wires or the box is loose, you could detect a low humming noise in the furnace when off. Your furnace also uses a blower motor, which sends warm or cooled air across your rooms, and a capacitor, which turns on the motor. If either of these pieces are fading, 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 due to something small, like an unfastened screw, or something critical, like a broken part. In either case, we advise shutting your furnace off and contacting our heating professionals at 734-363-8907 for help.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s on, it’s attempting to get your attention it needs some TLC. If you’ve forgotten furnace maintenance the last couple of years, belts could be dilapidated or a bearing may need to be lubed. We know that maintenance often slips your mind, but our technicians can get your furnace heating quietly again fast.

5. Furnace Making a Whistling Noise

When you’re hearing your furnace making a whistling noise, it’s frequently the result of an air leak in your ductwork. You could also be aware of whistling while the furnace is operating if a floor vent isn’t secure. If you’ve looked at your vents but are still hearing noise, Gee & Missler Heating & Air Conditioning can provide support. It’s critical to get loose ductwork taken care of without delay, since it can result in comfort issues in your house and drive up your heating bills.

6. Furnace Making a Grinding Noise

It’s not a positive sign if you notice your furnace making a grinding noise. This metal-on-metal sound frequently means there’s an issue with your furnace’s blower. Switch off your furnace off now and call our pros at 734-363-8907 for support.

When you’re hearing a strange noise from your furnace, Gee & Missler Heating & Air Conditioning is available to help. Contact us at 734-363-8907 to book your furnace repair appointment now.