Replacing Flexible Duct In Attic

Examine the joints between spans of ductwork for deteriorating duct tape used as sealant during.

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. Save up to 30 when you sign up with this link to housecall pro. Sometimes the best route for a flexible duct run is up and over an obstruction. Mack explains that a typical single family home may need 6 10 duct runs.

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. When i updated and reposted the article recently at green building advisor jack lagershausen the executive director of the air diffusion. The rigid insulation was saturated from condensation. In that case the ductwork could need replacing.

Visually inspect the ductwork in areas where it is exposed such as attics and crawl spaces. 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. A couple of years ago i even wrote an article about whether or not flex duct should be banned. Ductwork running along an open ceiling in the basement of a one story home is also more affordable to replace.

That sounds like a horrible product and it is. I ve written a lot about duct problems especially those in flex duct because they re so abundant. My answer was no but that we need better quality control. First you ll need to insist that your hvac contractor performs a series of air conditioning contractors of america acca calculations called.

This would be one time where a full duct replacement is in order along with creating a better design for proper airflow. 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. The costliest are sheet metal ducts running in enclosed walls and ceilings.

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.