When your furnace is running correctly, it should deliver warm air without generating too much sound. While it’s expected to catch your furnace making noise as it turns on, other sounds are showing your furnace needs immediate professional assistance.

Here are some of the most common furnace noises and what they could be signaling. If your furnace is making an atypical noise, our friendly heating pros are here to fix the problem with the best furnace repair in Thedford, Ontario.

1. Furnace Making a Banging Noise

You may have a critical problem 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 several problems. These range from gas increasing in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system gets grimy over the years, so that’s why it’s critical to schedule annual furnace maintenance with Taylor's Heating & Air Conditioning. One of the jobs our techs do during this service is clean your furnace’s burners. When this part gets grimy, you may hear your furnace making a loud rumbling noise when ignition takes more time. The ensuing gas buildup can crack your furnace’s heat exchanger, where natural gas changes into warmth. Any cracks in it can emit carbon monoxide, which is normally released outdoors. This dangerous gas can be lethal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Taylor's Heating & Air Conditioning advises turning it off and reaching us at 519-296-4437. Excessive natural gas in your furnace or a cracked heat exchanger are serious problems that necessitate fast repairs.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to provide hot air throughout your residence. If the ductwork wasn’t put in correctly or is aging, it can be loud when your furnace is on. This could be the issue if your furnace makes a banging noise when it shuts off. Call Taylor's Heating & Air Conditioning at 519-296-4437 and we’ll determine the problem.

2. Furnace Makes a Buzzing Sound

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

Your furnace uses an internal transformer to run on the correct voltage. If wires or the box needs to be tightened, you might hear a low humming noise in the furnace when off. Your furnace also works with a blower motor, which moves warm or cooled air throughout your home, and a capacitor, which turns on the motor. If either of these parts are going out, they will buzz when the furnace switches on.

3. Furnace Rattles

If your furnace is making a rattling noise, it can be related to something small, like an unsecure screw, or something serious, like a broken part. In either case, we advise shutting your furnace off and getting in touch with our heating specialists at 519-296-4437 for support.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s running, it’s trying to tell you it could use some TLC. If you’ve skipped furnace maintenance the past few years, belts could be worn down or a bearing could need to be lubricated. We are aware that maintenance frequently slips your mind, but our pros can get your furnace operating quietly again fast.

5. Furnace Makes a Whistling Sound Like Air Escaping

When you’re detecting your furnace making a whistling noise, it’s typically because of an air leak in your ductwork. You may also hear whistling while the furnace is operating if a floor vent is loose. If you’ve looked at your vents but are still sensing whistling, Taylor's Heating & Air Conditioning can help. It’s important to get loose ductwork fixed without delay, because it can result in comfort troubles in your residence and inflate your utility costs.

6. Furnace Makes a Loud, Unpleasant Grinding Noise

It’s not a positive sign if you detect your furnace making a grinding noise. This metal-on-metal noise usually means there’s trouble with your furnace’s blower. Shut down your furnace off now and reach our professionals at 519-296-4437 for help.

When you’re hearing an uncommon noise from your furnace, Taylor's Heating & Air Conditioning is available to support you. Contact us at 519-296-4437 to book your furnace repair appointment today.