Flex Ductwork In Attic

The really bad news is that with old metal duct systems the only option is replacement of the ducts to stop the rain in the attic.

Flex ductwork in attic.

Hard ducts without proper mooring will be unbalanced and unbalanced ductwork might be to blame for a number of hvac problems. A couple of years ago i even wrote an article about whether or not flex duct should be banned. I called out the original hvac company and they took a look and said they saw no water. I ve written a lot about duct problems especially those in flex duct because they re so abundant.

How much do flexible ductwork cost. Flex duct requires the correct support to ensure it does not restrict air as it flows from the air conditioning unit to the registers distributing air throughout. Ductwork running along an open. When i updated and reposted the article recently at green building advisor jack lagershausen the executive director of the air diffusion.

It was new when the ac was put in 7 years ago. The next most typical type of duct systems is made of flexible duct. The house is single story and has a 3 5 ft crawlspace underneath. Ductwork replacement costs of less than 1 000 to more than 6 000 covers a lot of ground.

Flex ducts themselves do not sweat however if the. How to hang flex duct in an attic. But without proper support ducts can develops sags or kinks that reduce airflow 4a 4b. When hvac ducts are installed in a vented attic in a dry climate bury the ducts in attic insulation to protect them from temperature extremes in the unconditioned attic space.

Give your ducts the proper support. Sometimes the best route for a flexible duct run is up and over an obstruction. Flexible duct is a plastic tube that is reinforced with wire and then insulated on the outside. 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.

The prior owner just had a new ac system installed in which they switched from the equipment and metal ducts in the crawlspace to flex ductwork equipment in the attic where temps have regularly been in the 130 150 degrees this summer. The top selling flexible ductwork product is the master flow 6 in. Recently i had another hvac company come out and put in a new bathroom vent and they told me they believed the duct work was full of water. Insulated flexible duct r6 silver jacket.

This is an especially relevant tip for flex ducts more on that in a minute but you need to make sure any ducts in your attic have proper support. Improperly supported flex. Use metal flex or fiber board ducts that are insulated to. Here are the factors that will determine where on that range your project will fall.

Type of ductwork system the least expensive duct system is a radial system of flexible ducts in an attic running to ceiling grates. Install ductwork so that it is in direct contact with i e laying on the ceiling and or truss lower cords.