Flexible Ac Duct Installation

Roll back the plastic or foil jacket and the fiberglass lining approximately 8 to 12 inches from the inner core.

Flexible ac duct installation.

Flexible ductwork is often made from flexible metals such as tin or aluminum also metal fiberglass or plastic. Do not install in the compressed state or use excess length as this will noticeably increase friction losses. 4 4 installation and usage install ducts fully extended. Measure the distance between the plenums or collars where the flexible duct installs.

The straps that hold up the flex duct need to be no less than 1 5 wide. Some kinds of flexible ductwork can also be made from vinyl insulation which is extremely easy to fit on your own. There s no question that flexible duct is easier to install than metal ductwork but consider this. Minimum 1 duct diameter bend radius reduces pressure drop and improves air flow.

Flexible duct performance in stallation standards 5th edition figure 8 correct. Space supports no more than 4 feet apart a connection to a rigid duct or to equipment counts as a support point. Spread a thin layer of mastic. The duct has r6 insulation which contains 33 more insulation than the standard r4 2 product.

The supports need to be at the manufacturer s recommended spacing but no longer than 4 maximum. Average do it yourself cost 1 25 linear foot average contractor installed cost. How to install insulated flex duct 1. Insulated flexible duct r6 silver jacket is used in standard heating and air conditioning hvac systems and some venting applications.

Flexible duct can degrade over time. Installation of flexible ducts shall be listed and labeled to standard ul 181b closuresystemsforusewithflexibleairductsandairconnectors non metallic fastenersarelimitedto6inchw g maximumpositivepressure. The adc standards give a lot of other details about installation including one of the most important aspects the connections. It collects dust and is almost impossible to clean.

Supports should be at least 1 inches wide. The master flow 4 in. Flexible ductwork is a very popular because it is easy to install and has great insulation potential. Follow the manufacturer s instructions but in case they get lost here is a list of best practices for supporting ducts.