Flex Duct For Cold Air Return

Most technicians are skeptical about these numbers especially on the return air side of the system.

Flex duct for cold air return.

One way to help combat this problem is to modify your cold air return ducts for better airflow. The flexible design allows for connection of a new or existing side air return on either side based on the placement of the reinforced sheet metal panel of the return air box assembly. That would then reduce the flow of conditioned air to that space. Return air ducts are necessary for just about every room.

Nail a piece of sheet metal onto the back of a stud cavity. The master flow 8 in. Plus the knock down design simplifies transporting to the job by taking up very little space. Whenever possible expand your existing ducts vertically by cutting out pieces of wallboard and installing a new cover and air filter to fit.

In addition its flexibility allows for easier installation in hard to reach areas. For the system to work you have to re circulate the air back to the furnace. Figure 10 inch or 8 inch for a return. For instance a 2 5 ton system approximately 400 cfm per ton would require 2 14 flexible return ducts or 1 very short flexible 18 duct to move the 1000 cfm required by the 2 5 ton system.

That is why you need a cold air return image 1. Flexible duct can be installed in place of galvanized pipe in many applications if allowed by your local hvac codes. All ducts whether rigid or flexible should be sealed with ul 181 rated duct mastic. Insulated flexible duct r6 silver jacket is used in standard heating and air conditioning hvac systems and some venting applications.

If you had no return air in your room you would create a positive pressure. The duct has r6 insulation which contains 33 more insulation than the standard r4 2 product. Insert the metal collar press the flower pedal shaped leaves to hold the collar in place. Yes if your house is either hot or cold i ll bet you have inferior or lacking return air ducts.

Use a circle cutter and cut out a hole in your return box. If you live in a home that has rooms that are either too hot in hot weather or are cold in cold weather you could have a return air duct issue. Duct tape has many uses but sealing ducts isn t one of them.