Any time there is a new heating system sound, it’s cause for concern. When a furnace suddenly starts making a banging sound, there could be a few possible reasons, but it will take the expertise of a trained heating specialist to uncover the issue and find a solution.

A furnace shouldn’t make loud banging noises.
If yours is, it’s time for a service call. There are multiple reasons why this could happen internally in the furnace. Most furnaces have a main blower as well as a combustion blower which may be damaged or malfunctioning. Delayed ignition could be another reason. If it’s making unusual or loud sounds, chances are it needs to checked by a pro.

Expanding and Contracting Air Ducts
Another possible explanation of a furnace banging sound could be expanding and contracting air ducts. This usually occurs from an improper installation—undersized ductwork—so if it’s a new issue, the banging sound is likely a result of something else.

It’s never advisable for homeowners to try to investigate furnace issues or attempt home repairs. It can be dangerous and you could actually cause even more damage.

Help Prevent Furnace Noises with Annual Maintenance
During a yearly preventative service call, a trained technician performs an in-depth furnace safety inspection and performance evaluation. During this appointment, any issues that could lead to unusual furnace sounds can be identified and fixed before it turns into a problem. If you haven’t scheduled your yearly maintenance, it’s not too late.
Call Delta Air Systems to book your appointment.

If you’re concerned about your furnace or have any questions,
don’t hesitate to contact us.

Going strong for over 50 years, Delta Air Systems is proud to provide quality heating service to the Kitchener-Waterloo region. Our team of certified specialists will get your furnace operating efficiently so you can stay comfortable all winter long.

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