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.

They are also prone to condensation as well as air leakage. There are three main types of rigid ductwork. Sheet metal air ducts. However rigid ducts cannot be easily used in tricky spaces.

There are two different rigid duct types commonly used in home hvac systems. To protect the air the interiors of these ducts are sealed so fiberglass cannot make its way into the flowing air stream. While they are inexpensive to install they are not very effective. Sheet metal ducts fiberglass lined ducts and fiberboard ducts.

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

If you do choose to use these you can make them more effective. These are the kinds of ducts you ve seen in films usually with an action hero crawling through them. Uninsulated rectangular ducts also known as sheet metal ducts are the most popular type. They have a non porous surface that s easily cleaned and the smooth metal makes an inhospitable environment for biological contaminants.

Sheet metal ducts are usually made of either galvanized steel or aluminum. Sheet metal ducts. Sheet metal round or rectangular ducts made of sheet galvanized steel or aluminum are the most durable and costly available. However because of this sealed lining these ducts can be very difficult to clean.

They may be round rectangular or in the form of a spiral oval. Lambro rigiflex 4 in x 96 in aluminum semi rigid flexible duct. Sheet metal ducts. Four common types of ducts are flexible ducts metal ducts glass wool duct boards and plastic ducts.

Item 1790033 model 1790033. These are sheet metal ducts like those described above that have internal or external fiberglass lining. They allow excess noise in your home. Fiberglass ducts are a form of sheet metal ducts lined either on the interior exterior or both with fiberglass.