What Is a Manual Damper

Manual dampers are turned by a handle on the outside of a duct. … In a chimney flue, a damper closes off the flue to keep the weather (and birds and other animals) out and warm or cool air in. This is usually done in the summer, but also sometimes in the winter between uses.

How does a manual damper work?

Manual dampers work by the homeowner twisting a screw to regulate the airflow that goes into a certain zone. … Motorized dampers are more convenient for homeowners with a programmed HVAC zoning system, as they work in concert with the whole HVAC system and follow the home’s heating and cooling regime set by the owner.

How many types of dampers are there in HVAC?

There are two common types of HVAC dampers: manual and automatic. Each system brings unique benefits to HVAC applications.