When to Call a Professional for Help with Your Noisy Furnace

professional handling gas furnace

Having a noisy furnace can be an irritating and disruptive problem. Furnace noises can come in a variety of forms, from low humming to loud banging and clanking. In some cases, a noisy furnace can be a sign of a serious problem. Knowing when to call a professional for help can save you time, money, and a lot of hassle.

If your furnace is making any strange noises, it’s important to get it checked out as soon as possible. Here are a few signs that you should call a professional for help with your noisy furnace:

1. Rattling Noises

If your furnace is making rattling noises, this could be a sign of an issue with the blower fan or some other internal component. If the noise is coming from the blower fan, it’s likely that it’s not properly lubricated or has come loose. A technician can easily fix this issue, so it’s best to call for help right away.

2. Loud Humming

If your furnace is making a loud humming noise, it could be a sign that there’s a problem with the blower motor or the fan belt. It’s best to get it looked at by a professional to make sure it’s running properly.

3. Unusual Smells

If your furnace is producing an unusual smell, such as burning or smoke, it’s important to get it checked out right away. These smells could be a sign of an electrical problem or a gas leak, which can be very dangerous.

4. Banging Noises

A variety of issues, including a problem with the ductwork, the fan belt, or the blower motor, can cause banging noises. In any case, these noises can indicate a serious problem and should be addressed by a professional as soon as possible.

5. Grinding Noises

Grinding noises are usually caused by worn-out bearings in the motor. In this case, the motor needs to be replaced, which should only be done by a professional. 

6. Squealing Noises

If your furnace is making a squealing noise, it’s likely an indication of a worn fan belt. It’s important to have this issue fixed as soon as possible, as a worn fan belt can cause further damage to your furnace. 

7. Loud Buzzing

If your furnace is making a loud buzzing noise, this could mean that the furnace is having an electrical issue. This could be caused by a faulty wiring or a broken component. In this case, it’s always best to turn off the power to the furnace and call a professional HVAC technician for help. 


No matter the type of noise your furnace is making, it is always best to have a professional inspect it. The longer you wait, the more likely it is that the noise is caused by a serious problem that could lead to an expensive repair bill. If you hear any of the above noises, it is best to call a professional right away. 

A professional can determine what is causing the noise and provide you with the best solution. They will also be able to offer advice on how to maintain your furnace and keep it running efficiently. By taking the time to call a professional for help, you can save yourself time, money, and hassle in the long run.

If you’re in need of Lennox furnace repair in Toronto, there’s no better team than Lennox Dealers Toronto. We’ll get your furnace back up and running quickly and efficiently, so you can enjoy the comfort of your home once again. Contact us today to learn more!

Call Us Now For A Free Estimate 1-855-241-7171