Flex Duct Vs Metal Duct

The inner liner ribs restrict airflow more than sheet metal ductwork but not significantly.

Flex duct vs metal duct.

There are two basic types of ductwork to keep in mind when deciding upon your new system. 408 422 2987. In comparison to metal duct flex duct is easier and faster to install. Rigid sheet metal and flexible ductwork.

Flexible ducts are good for air quality because you are not breathing in fiberglass insulation lined ductwork like the fiber air ducts and they are mold and rust resistant unlike galvanized. But without proper support ducts can develops sags or kinks that reduce airflow 4a 4b. 09 05 2007 10 58 am 10. Each has its advantages.

One very important aspect of duct design to consider is the differences between flexible hvac ductwork and rigid duct insulation. Flex ducts are better for existing trunk and branch heating and cooling systems. Sometimes the best route for a flexible duct run is up and over an obstruction. Semi rigid metal usually aluminum duct is flexible and similar to foil ducting but quite a bit more rigid.

Matt risinger principle of risinger homes in austin tx is surprised by how few builders use rigid metal ducting anymore. To prevent problems use saddles or straps to support at regular intervals 4c 4d follow the manufacturer s instructions but in case they get lost here is a list of best practices for. Like foil duct semi rigid is used only for transition ducting and should not be concealed in walls or floors. View profile view forum posts visit homepage view forum threads.

Metal ducts are more rigid due to the nature of steel making them ideal to build an entire hvac system. It is typically installed with clamps. Flexible ducts are also the worst type of ductwork for airflow. Sheet metal ducts vs.

But it needs to be sealed and insulated to today s standards. Made from sheet metal ducts with internal and external fiberglass lining. Because of what it s made out of it tends to last a long time especially when it is properly cared for. If your ductwork is properly sized it will be better than flex.

See how matt and his crew use both rigid metal and flex for great air distribution in the homes they build.