Replacing Flexible Duct In Attic

He charges 5 000 6 000 for a typical new construction ductwork installation job which takes 2 3 days and.

Replacing flexible duct in attic.

In the 1970s homes were built without good attic ventilation and with a horrible duct product that actually deteriorates becomes brittle and cracks open. Type of ductwork system the least expensive duct system is a radial system of flexible ducts in an attic running to ceiling grates. First you ll need to insist that your hvac contractor performs a series of air conditioning contractors of america acca calculations called. I ve written a lot about duct problems especially those in flex duct because they re so abundant.

When i updated and reposted the article recently at green building advisor jack lagershausen the executive director of the air diffusion. 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. 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.

But without proper support ducts can develops sags or kinks that reduce airflow 4a 4b. The costliest are sheet metal ducts running in enclosed walls and ceilings. The flex ducts were literally filled shut with ice in the low spots compressing the scant insulation layer beneath them. The rigid insulation was saturated from condensation.

This would be one time where a full duct replacement is in order along with creating a better design for proper airflow. Lastly the main reason you might need to replace old duct work is if you are replacing your 30 year old hvac system with a new high efficiency unit. Examine the joints between spans of ductwork for deteriorating duct tape used as sealant during. Save up to 30 when you sign up with this link to housecall pro.

My answer was no but that we need better quality control. A couple of years ago i even wrote an article about whether or not flex duct should be banned. In that case the ductwork could need replacing. Mack explains that a typical single family home may need 6 10 duct runs.

Visually inspect the ductwork in areas where it is exposed such as attics and crawl spaces.