Types Of Residential Air Ducts

The most common type of rigid air duct is constructed of galvanized steel or aluminum.

Types of residential air ducts.

The most common type of ridged air duct is constructed of galvanized steel or aluminum. Sheet metal ducts. However because of this sealed lining these ducts can be very difficult to clean. Since the early 1970 s a significant increase in the use of flexible duct which generally is internally lined with plastic or some other type of material has occurred.

Lambro rigiflex 4 in x 96 in aluminum semi rigid flexible duct. Aluminum in particular is relatively light and easy to install but needs to be thick enough to avoid getting crushed if someone walks on it. To protect the air the interiors of these ducts are sealed so fiberglass cannot make its way into the flowing air stream. However many modern residential air duct systems are constructed of fiber glass duct board or sheet metal ducts that are lined on the inside with fiber glass duct liner.

While they are inexpensive to install they are not very effective. They have a non porous surface that s easily cleaned and the smooth metal makes an inhospitable environment for biological contaminants. There are three main types of rigid ductwork. However rigid ducts cannot be easily used in tricky spaces.

They may be round rectangular or in the form of a spiral oval. Item 1790033 model 1790033. Sheet metal round or rectangular ducts made of sheet galvanized steel or aluminum are the most durable and costly available. They are also prone to condensation as well as air leakage.

Sheet metal ducts. Some sheet metal air ducts air ducts are lined with an external or internal fiberglass duct. If you do choose to use these you can make them more effective. Types of air ducts sheet metal air ducts.

These are the kinds of ducts you ve seen in films usually with an action hero crawling through them. Sheet metal ducts fiberglass lined ducts and fiberboard ducts. These are sheet metal ducts like those described above that have internal or external fiberglass lining. Fiberglass ducts are a form of sheet metal ducts lined either on the interior exterior or both with fiberglass.

They allow excess noise in your home. Uninsulated rectangular ducts also known as sheet metal ducts are the most popular type. Fiberglass lined air ducts. Sheet metal air ducts.