Where Should Duct Dampers Be Placed? A Comprehensive Guide to Proper Installation and Maintenance

Duct dampers are an essential part of any HVAC system, used to regulate the flow of air in the ducts for better air circulation and temperature control. These dampers come in three positions: closed, semi-open, and fully open. The closed position completely blocks airflow, while the semi-open one only allows partial airflow. The fully open position allows maximum airflow out of the ducts.

In some homes, shock absorbers are installed in every duct, which is great for balancing the air. Most standard shock absorbers are located a few meters from the base of the HVAC unit. When you enter the basement or the air handling unit of a closet, you will notice the main connections to the trunk of the HVAC unit. If your home has a second level, shock absorbers will likely be present in the HVAC system.

The location of a duct damper depends on the layout of your home and your HVAC system. A supply duct can move to the right or to the left of the boiler, depending on the location of the home. Usually, a shock absorber will be inserted into the supply duct that leads to the upper level. It's important to make sure that your home inspection company thoroughly checks your HVAC system during a home inspection. This will ensure that all components are working properly and that all duct dampers are in their correct positions. Knowing where duct dampers should be placed is essential for proper installation and maintenance.

Regularly checking them is key to ensuring proper air circulation and temperature control.

Michele Elbe
Michele Elbe

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