Why do I hear knocking in my vents?

Banging Noises Coming from Your Vents? Here’s What You Should Know.

If you’ve ever heard a banging noise coming from your vents, you might be curious as to what’s causing it. Most of the time, the reason is innocuous and quickly remedied. But if you are concerned about the noise, you should always contact a professional to have your ducts checked. In this blog post, we’ll explain some of the most common reasons for banging noises coming from vents so that you can have peace of mind the next time you hear a noise. 

Most noise is created by pressure variations between the supply and return ducts. When the pressure in the ducts is uneven, air might flow back and forth, resulting in banging sounds. Another typical cause of banging sounds is thermal expansion and contraction. The metal in the ducts expands and contracts as the temperature changes, causing banging or popping noises. 

There’s no need to be concerned if you hear banging noises coming from your vents. In most situations, the reason is innocuous and quickly remedied. If you are concerned about the noise, you should always contact a professional to have your ducts checked.

Contact Duct Cleaning Sudbury for all your air duct and dryer vent cleaning services in the Greater Sudbury area at 705-996-4553