It's normal to hear some noise coming from the air vents connected to your home's duct system when its fan is running. However, if the sounds become too loud and irritating, that could be indicating potential problems with your system. Let's have a look at what those noises could be a sign of and what you can do to quiet down those noisy air vents.
High-Pitched, Tuning-Fork Noises
A high pitched noise that resembles that of a ringing tuning fork is usually a sign of inadequate return airflow. The pressure problem that results increases the sound levels. You'll need to add more return air to solve the problem.
There are several factors that can block return airflow. A clogged air filter is a common culprit. You'll need to
change the filter. Closed supply vents or duct dampers may also be to blame. Ensure your vents and dampers are correctly open.
Furniture can also block return vents. Make sure there's no furniture on top of or too close to your return vents. Improper ductwork design can also impede return airflow. This can be corrected by following the
best practices in ductwork design when replacing your existing duct system.
Rattling Sounds
Rattling sounds are usually caused by debris in your ductwork such as plastic, screws, and nails, or a broken supply register. You'll need to call in an
HVAC technician to inspect or clean your ducts.
The best way of fixing and preventing annoying HVAC noises is by scheduling regular maintenance. You'll enjoy improved energy efficiency and extended equipment life in addition to keeping those unwanted sounds at bay. For more helpful tips on silencing noisy air vents, please contact us at
Russell's Heating & Cooling. We've been proudly serving the Hampton Roads area of Southeast Virginia for nearly 40 years.
Our goal is to help educate our customers in Chesapeake, Virginia and surrounding areas about energy and home comfort issues (specific to HVAC systems). For more information about noisy air vents and other HVAC topics, download our free Home Comfort Guide or call us at 757-750-1831.
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