Replacing Flexible Duct In Attic

Sometimes the best route for a flexible duct run is up and over an obstruction.

Replacing flexible duct in attic. Thanks airman and grady. I had forgotten that a couple years ago i had an a c technician replace some flex duct to another room and there is a 5 5 foot section of 7 flex duct just sitting up there ready to be used. Type of ductwork system the least expensive duct system is a radial system of flexible ducts in an attic running to ceiling grates. Save up to 30 when you sign up with this link to housecall pro.

The costliest are sheet metal ducts running in enclosed walls and ceilings. 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. When i updated and reposted the article recently at green building advisor jack lagershausen the executive director of the air diffusion. I ve written a lot about duct problems especially those in flex duct because they re so abundant.

Installing attic insulation costs 1 700 to 2 100 and may be a good project to do at the same time. My answer was no but that we need better quality control. Flexible ductwork is a very popular because it is easy to install and has great insulation potential flexible ductwork is often made from flexible metals such as tin or aluminum also metal fiberglass or plastic. Flexible non metallic ducting is the most affordable at 1 2 per linear foot on average.

But without proper support ducts can develops sags or kinks that reduce airflow 4a 4b. The price to replace ductwork in an attic ranges from 500 to 2 000 depending on the size of the home and your existing system. Flex duct replacement costs range from 39 95 to 170 00 for 25 feet of r 4 2 insulated material with a 4 inch to 18 inch inside diameter. Some kinds of flexible ductwork can also be made from vinyl insulation which is extremely easy to fit on your own.

Duct board replacement costs for 60 linear feet for a home located in zip code 33624 using r6 8 inch diameter flexible polyester material ranges from 7 03 to 10 10 per linear foot. In this video i use mastic and air duct sealant t. Ductwork located in an attic crawl space may be difficult to get to and creates a hot and potentially hazardous environment for the crew. Ductwork running along an open ceiling in the basement of a one story home is also more affordable to replace.

I just went up in my attic and refreshed my memory as to what exactly is up there. The accessibility of a home s ductwork is a key factor in estimating the cost to replace it.