Where Is Damper on Hvac

Typically in most homes, your HVAC dampers are located in the main supply trunks. The supply trunks are the parts of the ductwork that are blowing warm air or cold air depending on the season.

Is my HVAC damper open or closed?

The air control plate in a manual damper is turned by a lever on the outside of your duct. If the damper handle is in a horizontal position, the damper plate has been set to open. If the damper handle is set vertically, the damper is closed to block air flow.

How do I find dampers in my attic?

Go into your basement or attic and find the dampers. Usually, they are positioned somewhere in the “take-offs” or “branches” of the duct system. With manual-type dampers, they have either a rod that you can adjust using a screwdriver or a lever that you can turn by hand.