Duct Damper

Hvac Fittings duct damper

Duct Damper


Any home or business must have proper air flow running through their ventilation system. These systems are critical in maintaining healthy air, controlling inside temperatures, and humidity levels. One particular part of the ventilation system that must be properly working for the complete system to work is the duct damper. 

In, hvac talk, duct damper’s primary purpose is to control the air flow coming from the source through the ducting inside a house or building. The damper plays a significant part in directing where the air will go, how much air will flow, and determines the comfort level inside a building. In addition, these dampers also play a role in controlling what comes into the ventilation systems. They can possibly block smoke or toxic fumes from a fire, from either inside or outside the ventilation system.

These dampers come in various forms and types, each having its own design, duct fittings, and purpose. Here are the five most common types of dampers that are used in the household and commercial buildings: Volume Control Dampers, Butterfly Dampers, Guillotine Dampers, Louver Dampers, and Diverter Dampers. 

The zone damper or in hvac talk, the Volume Control Damper, is used mainly in HVAC heating and cooling systems. The damper helps direct the air flow depending on the situation and where the user wants the air to go. The butterfly damper is used in areas where low-leakage is acceptable, but air flow control is needed. It is a lightweight and quick assembly type of damper, in addition, is relatively cheap compared to the other dampers. The Guillotine Damper is designed for places that need isolation, so that maintenance or repairs can be performed on equipment. These dampers have fewer moving parts and are usually more reliable than the other dampers. The Louver Damper can be found in power plants as they serve to control the air flow and isolation of air or gas. This damper is made of several small and adjustable blades, which means they are versatile and can fit anywhere in a ventilation system. Finally, the Diverter Damper, which is used to divert air or gas from one area to another. These dampers, with their special duct fittings, can withstand high temperatures and provide good isolation of air.

As you can see, there are many types of dampers that are used in every HVAC or ventilation systems. Each serve an important purpose in controlling the movement of air and without these dampers, many of companies would not be able to operate in a healthy environment. In addition, even you household would be impacted; because you would have no ability to control how hot or cold you want the inside of your house to be.
By: The Sheet Metal Kid