Clanging, Screeching and Rattling: What Six Familiar Furnace Sounds Mean

When your furnace is running properly, it should give warmth without making too much disruption. While it’s expected to catch your furnace making noise as it begins running, other noises are signaling your furnace should get immediate professional assistance.

Here are some of the most reported furnace noises and what they can be indicating. If your furnace is making a strange noise, our friendly heating specialists are here to fix the problem with the best furnace repair in Winnipeg, Manitoba.

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 signal there could be a couple of problems. These range from gas increasing in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system turns dirty over the years, so that’s why it’s important to book yearly furnace maintenance with Kirkfield Heating & Air Conditioning. One of the things our technicians do during this service is clean your furnace’s burners. When this component gets dirty, you may hear your furnace making a loud rumbling noise if ignition takes longer than normal. The following gas buildup can break your furnace’s heat exchanger, where natural gas transforms into warm air. Any fractures in it can emit carbon monoxide, which is normally emitted away from your home. This dangerous gas can be fatal in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, Kirkfield Heating & Air Conditioning recommends turning it off and reaching us at 204-272-8128. Significant natural gas in your furnace or a broken heat exchanger are critical issues that necessitate fast attention.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to deliver warm air across your residence. If the ductwork wasn’t installed right or is aging, it can make a lot of noise when your furnace is on. This might be the problem if your furnace makes a banging noise when it shuts off. Call Kirkfield Heating & Air Conditioning at 204-272-8128 and we’ll determine the problem.

2. Furnace Buzzes Constantly

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

Your furnace depends on an internal transformer to work on the proper voltage. If wires or the box needs to be tightened, you could hear a low humming noise in the furnace when off. Your furnace also works with a blower motor, which distributes heated or cold air across your residence, and a capacitor, which turns on the motor. If either of these parts are failing, 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 can be related to something little, like a loose screw, or something critical, like a broken part. In either case, we advise shutting your furnace off and calling our heating pros at 204-272-8128 for help.

4. Furnace Squeals

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s attempting to alert you it could use some TLC. If you’ve skipped furnace maintenance the last couple of years, belts could be worn out or a bearing may need to be greased. We are aware that maintenance sometimes slips your mind, but our technicians 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 due to an air leak in your ductwork. You could also notice whistling while the furnace is on if a floor vent isn’t secure. If you’ve looked at your vents but are still hearing noise, Kirkfield Heating & Air Conditioning can help. It’s critical to get loose ductwork repaired without delay, because it can result in comfort issues in your home and inflate your utility costs.

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 noise often means there’s a problem with your furnace’s blower. Switch off your furnace off right away and contact our pros at 204-272-8128 for assistance.

When you’re hearing an uncommon noise from your furnace, Kirkfield Heating & Air Conditioning is available to support you. Contact us at 204-272-8128 to schedule your furnace repair appointment right away.