Replacing Flexible Duct In Attic

But without proper support ducts can develops sags or kinks that reduce airflow 4a 4b.

Replacing flexible duct in attic.

The rigid insulation was saturated from condensation. 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. Examine the joints between spans of ductwork for deteriorating duct tape used as sealant during. A couple of years ago i even wrote an article about whether or not flex duct should be banned.

Mack explains that a typical single family home may need 6 10 duct runs. The costliest are sheet metal ducts running in enclosed walls and ceilings. This would be one time where a full duct replacement is in order along with creating a better design for proper airflow. My answer was no but that we need better quality control.

Type of ductwork system the least expensive duct system is a radial system of flexible ducts in an attic running to ceiling grates. I ve written a lot about duct problems especially those in flex duct because they re so abundant. The flex ducts were literally filled shut with ice in the low spots compressing the scant insulation layer beneath them. Ductwork running along an open ceiling in the basement of a one story home is also more affordable to replace.

Jim hoover owner of hvac2u in warrenton virginia specializes in new construction but can also install new ductwork or replace ductwork for customers in his area. In that case the ductwork could need replacing. Visually inspect the ductwork in areas where it is exposed such as attics and crawl spaces. That sounds like a horrible product and it is.

I found instead a vintage 3 ton ac unit with 1 rigid insulation taped all over it and insulated flex duct snaking all over the poorly insulated attic. First you ll need to insist that your hvac contractor performs a series of air conditioning contractors of america acca calculations called. When i updated and reposted the article recently at green building advisor jack lagershausen the executive director of the air diffusion. Sometimes the best route for a flexible duct run is up and over an obstruction.

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