When your furnace is running properly, it should give heat without creating too much sound. While it’s common to catch your furnace making noise as it starts up, other noises are signaling your furnace requires immediate professional help.

Here are some of the most reported furnace noises and what they could mean. If your furnace is making an odd noise, our friendly heating professionals are here to assist with the best furnace repair in Dresden, Ontario.

1. Furnace Makes Banging or Knocking Sounds

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 may indicate there could be a couple of problems. These include gas increasing in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system gets dirty as time passes, so that’s why it’s important to set routine furnace maintenance with McFadden Heating & Cooling. One of the things our pros perform during this service is clean your furnace’s burners. When this piece gets dirty, you may hear your furnace making a loud rumbling noise when ignition is delayed. The subsequent gas buildup can break your furnace’s heat exchanger, where natural gas turns into warm air. Any cracks in it can emit carbon monoxide, which is regularly emitted outside. This hazardous gas can be fatal in large concentrations.

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

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to provide heated air throughout your home. If the ductwork wasn’t installed properly or is aging, it can make a lot of noise when your furnace is heating. This might be the problem if your furnace makes a banging noise when it shuts off. Contact McFadden Heating & Cooling at 519-683-2339 and we’ll figure out the problem.

2. Furnace Making a Buzzing Noise

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

Your furnace uses an internal transformer to work on the proper voltage. If wires or the box is loose, you may hear a low humming noise in the furnace when off. Your furnace also works with a blower motor, which moves warm or cooled air across your residence, and a capacitor, which turns on the motor. If either of these components 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 the result of something little, like an unfastened screw, or something serious, like a broken component. In either case, we advise shutting your furnace off and calling our heating professionals at 519-683-2339 for assistance.

4. Furnace Squeals

If your furnace makes a high-pitched noise, like squealing, when it’s on, it’s making an effort to get your attention it needs 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 lubricated. We are aware that maintenance often slips your mind, but our techs can get your furnace operating 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 could also hear whistling while the furnace is on if a floor vent is loose. If you’ve checked your vents but are still hearing sound, McFadden Heating & Cooling can help. It’s important to get loose ductwork fixed without delay, as it can create comfort issues in your residence and drive up your heating expenses.

6. Furnace Makes Noise that Sounds Like Scraping Metal

It’s not a good sign if you detect your furnace making a grinding noise. This metal-on-metal racket frequently means there’s trouble with your furnace’s blower. Switch off your furnace off right away and reach us at 519-683-2339 for help.

When you’re hearing an uncommon noise from your furnace, McFadden Heating & Cooling is here to provide assistance. Contact us at 519-683-2339 to request your furnace repair appointment now.