What’s That Noise In The Ductwork?
If you’re hearing unusual banging or other noises in your home’s ductwork, there are a number of possible causes. Locating the source of these noises is often not difficult, and it’s the first step in taking corrective action. Some of the noises you might hear in your ductwork:
These noises can come from loose or separated duct sections. Other possible causes of noise in the ductwork include:
- Ducts too close to the framing.
- Heat rushing through cold ductwork.
- Improperly adjusted dampers.
- Restricted airflow.
- Holes in the ducts.
- Improper installation.
Ductwork expands and contracts with the temperature, and placing ductwork too close to your home’s framing can cause banging noises. Wrapping the ductwork with insulation or liners can help to reduce the noise from the expanding or contracting ducts.
Banging and pinging can also occur when hot air begins to run through cold ductwork, causing the ducts to expand quickly and creating the popping sounds. If your HVAC dampers or actuator are not properly adjusted, they can also cause noises as airflow is restricted by the buildup of dust or dirt in the ducts.
You might hear whistling sounds coming through your ductwork if there are holes or gaps in the ductwork. The rushing air that moves through your ducts, when not sealed correctly, can create the whistling sounds. Other sounds can be created when the ductwork has been installed incorrectly or the wrong sized ducts were installed. Improper sizing can not only create noises, but also prevent the HVAC from producing a uniform climate throughout the home.
If you need ductwork help, contact the home-comfort experts at Symbiont Service Corp. We proudly serve the Charlotte and Sarasota Countys.
Our goal is to help educate our customers about energy and home comfort issues (specific to HVAC systems). For more information about noise in the ductwork and other HVAC topics, download our free Home Comfort Resource guide.