When your furnace is operating correctly, it should give warmth without creating too much noise. While it’s expected to catch your furnace making noise as it starts up, other sounds are signaling your furnace should get immediate professional help.

Here are some of the most common furnace noises and what they might be indicating. If your furnace is making a strange noise, our friendly heating pros are here to help with the best furnace repair in Dresden, Ontario.

1. Furnace Making a Banging Noise

You might have an urgent problem on your hands if you’re noticing your furnace making a banging noise. If your furnace is making a knocking noise, it might indicate there could be several problems. These involve gas accumulating 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 critical to schedule routine furnace maintenance with McFadden Heating & Cooling. One of the tasks our techs perform during this appointment is clean your furnace’s burners. When this part gets grimy, you may hear your furnace making a loud rumbling noise when ignition is delayed. The ensuing gas buildup may crack your furnace’s heat exchanger, where natural gas changes into warmth. Any fractures in it can leak carbon monoxide, which is regularly emitted away from your home. This dangerous gas can be lethal in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, McFadden Heating & Cooling advises turning it off and reaching us at 519-683-2339. Excessive natural gas in your furnace or a broken heat exchanger are dangerous issues that require immediate repairs.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to move warm air throughout your residence. If the ductwork wasn’t put in right or is aging, it can make a lot of noise when your furnace is on. This could be the issue if your furnace makes a banging noise when it shuts off. Call McFadden Heating & Cooling at 519-683-2339 and we’ll pinpoint the problem.

2. Furnace Makes a Buzzing Sound

If you observe your furnace making a buzzing noise, don’t wait to call us. A buzzing sound typically indicates an electrical problem, like with its transformer, blower motor or capacitor.

Your furnace depends on an internal transformer to run on the correct voltage. If wires or the box needs to be tightened, you might notice a low humming noise in the furnace when off. Your furnace also works with a blower motor, which sends heated or cooled air across your rooms, and a capacitor, which starts the motor. If either of these parts are going out, they will buzz when the furnace turns on.

3. Furnace Makes Rattling Sounds Like Something Is Loose

If your furnace is making a rattling noise, it can be the result of something minor, like an unfastened screw, or something major, like a broken component. In either case, we recommend shutting off your furnace and getting in touch with our heating professionals at 519-683-2339 for assistance.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s running, it’s attempting to alert you it requires some TLC. If you’ve neglected furnace maintenance the last couple of years, belts could be worn down or a bearing may need to be lubricated. We are aware that maintenance frequently slips your mind, but our pros can get your furnace running quietly again fast.

5. Furnace Whistles

When you’re hearing your furnace making a whistling noise, it’s frequently because of an air leak in your ductwork. You may also hear whistling while the furnace is running if a floor vent is loose. If you’ve looked at your vents but are still noticing noise, McFadden Heating & Cooling can assist you. It’s critical to get loose ductwork fixed quickly, as it can make comfort troubles in your residence and inflate your gas bills.

6. Furnace Making a Grinding Noise

It’s not a positive sign if you detect your furnace making a grinding noise. This metal-on-metal racket frequently means there’s an issue with your furnace’s blower. Switch off your furnace off immediately and contact us at 519-683-2339 for support.

When you’re hearing a weird noise from your furnace, McFadden Heating & Cooling is here to support you. Contact us at 519-683-2339 to request your furnace repair appointment right away.