Furnace Noises and What They Mean

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Furnace Noises and What They Mean

Posted On: December 22, 2019

Furnace Noises and What They Mean

Has your furnace ever made a strange noise? There could be several reasons why your furnace is making noises. If you hear a whistling noise coming from your return air duct, that could be because of a dirty air filter. If your furnace is experiencing vibrations, squealing, and grinding noises, this can be a sign of a motor bearing issue. If popping or banging noises are coming from your furnace, this may be a sign of high heat rise.


Heat rise can lead to cracks and expansion within the heat exchangers, which can lead to a leak of CO in your home. If you are experiencing any of these furnace-related issues, make sure to call a technician to source and fix the problem.


Another potential cause of strange noises is running your furnace without a filter. Air filters prevent dust, hair, and lint from building up in the evaporator coil. A dirty coil restricts airflow in the system and can also lead to high heat rise if you’re not regularly cleaning it.


Often when the furnace fan begins to make noise, it’s because dirt has built up around the blower wheels. These wheels will need to be removed and cleaned to prevent overheating, and if left unattended, this could lead to the fan breaking down. Sometimes, selecting the wrong furnace fan speed can also be the source of strange noises.


It’s best practice to schedule a regular maintenance routine of your furnace to stop strange noises and ensure it is running smoothly.


At Twintech, we specialize in heating and cooling units. If there is a problem with your furnace or air conditioner, you can rely on us to fix it. Our experienced technicians can help locate the source of the problem and find a solution. We can also schedule a maintenance session if needed.


So when your furnace starts to make strange noises, do not hesitate to give us a call at 1-844-894-6832. For more information about heating and cooling units and the services that we offer, visit our website.




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See What Our Customers Are Saying:

by Nancy H. from Oshawa on Twintech Heating and Cooling

Work was performed in a clean and timely manner. The furnace and metal work was performed by the Twintech team (did not require separate contractor to do the metal work). Energy audit was arranged and promised rebates were received. The overall price was very competitive. We have recommended Twintech to several of our friends and family. Awesome job.

by Syd from Whitby on Twintech Heating and Cooling

Grant and Greg installed a heating and AC system in our new Linwood post and beam home. Post and beam can be challenging structures for running ductwork and their high ceilings and open concept frequently frustrate efforts at balancing air flow and controlling temperatures. But these guys did it and did it right the first time. Even the building inspector was impressed with what he saw. More importantly, the boys brought a high degree of trust and integrity to the job. Something in short supply these days.

by jenner iksmom from Oshawa on Twintech Heating and Cooling

Very polite and professional. They removed my o
ld furnace and A/C and installed my new ones. They were efficient and thoroughly cleaned up when they were done! I would highly recommend them!

by Rob from Toronto on Twintech Heating and Cooling

Pro from start to finish. They were able to fix my gas fireplace at very little cost as well.

by murray mcmichael from Ajax on Twintech Heating and Cooling

Excellent installation very knowledgeable gentlemen! Would highly recommend them to all my friends for any hvac work !

by Private User from Private User on Twintech Heating and Cooling

I have used Twintech many times over the years. They always arrive quickly and get the issue fixed. The most recent incident was when my air conditioner broke last week I called Greg at 11:30am and he was at my home by 2:30pm he had the unit fixed by 3:30pm. Twintech are very reliable and honest and they are experts in the field. I have already recommended them to many of my friends. I would not use anyone but them for my heating and air conditioning issues.

by Kate A in Pickering on Twintech Heating and Cooling

I would highly recommend these guys, professional, fast and competitive pricing. I moved into this place with no working AC unit with a 8 month baby, he was able to come with in a week to fix even in the busy summer days. He really values his customers , I am already recommending to my neighbors.

by Private User in Whitby on Twintech Heating and Cooling

Very impressed they arrive to quote even though I had forgotten to call them back to confirm date & time. They showed the day before installation to deliver the unit. Returned the next day as promised at 9am. Project was completed in a professional manner. They even fixed a few things that they noticed were not installed correctly, or to code by previous heating & air contractors we had at our residence before. Would recommend this company to everyone!

by Private User from Bowmanville on Twintech Heating and Cooling

Greg removed old oil furnace and oil tank from basement relocated new Napoleon propane furnace to allow duct work to be rerouted to a much more suitable location. Moved air conditioner to the new furnace. Dave recommended two available grants to assist with cost. They kept to their original quoted price which was substantially lower than a competitors for the same furnace and work. They completed the work as stated when stated and left the area clean and tidy. We are very pleased with the outcome.

by astephenson in Oshawa on Twintech Heating and Cooling

Twintech installed a Goodman furnace and ac init. Very professional install, both units are working well.

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