Flex Duct For Cold Air Return

Use a circle cutter and cut out a hole in your return box.

Flex duct for cold air return.

Insert the metal collar press the flower pedal shaped leaves to hold the collar in place. The duct has r6 insulation which contains 33 more insulation than the standard r4 2 product. Menards offers a wide range of ductwork pipe and fittings to help your ductwork systems run efficiently these products are used for warm air return supply and exhaust systems. All ducts whether rigid or flexible should be sealed with ul 181 rated duct mastic.

The master flow 8 in. Figure 10 inch or 8 inch for a return. That would then reduce the flow of conditioned air to that space. 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. Unbalanced air flow can increase air leakage from outdoors as well as force heated air outside of your house. Return air ducts are necessary for just about every room. That is why you need a cold air return image 1.

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. 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. When ducts are located outside the conditioned space they should be sealed to prevent loss of conditioned air and also insulated to prevent thermal loss or gain from the ambient air. Insulated flexible duct r6 silver jacket is used in standard heating and air conditioning hvac systems and some venting applications.

Most technicians are skeptical about these numbers especially on the return air side of the system. Flexible duct can be installed in place of galvanized pipe in many applications if allowed by your local hvac codes. 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. Yes if your house is either hot or cold i ll bet you have inferior or lacking return air ducts.

One way to help combat this problem is to modify your cold air return ducts for better airflow. Duct tape has many uses but sealing ducts isn t one of them. Plus the knock down design simplifies transporting to the job by taking up very little space.