Ducts In Attic

I lowered soffits around room perimeters.

Ducts in attic. The costliest are sheet metal ducts running in enclosed walls and ceilings. But in my last article i also showed you some preliminary results from a research study on buried ducts in a hot humid climate. Apply a generous amount of sealant mastic over the thermal leak. Ii lowered ceilings in hallways.

Use zip ties to secure any loose ducts to the attic floor. Ductwork running along an open ceiling in the basement of a one story home is also more affordable to replace. Steps to sealing attic air ducts locate the source of the thermal leaks by inspecting the ductwork while the air conditioner is running. You can get the air handler and ducts into conditioned space in several ways without needing a basement or crawl space.

Unblock any ducts that are restricting air flow and have them cleaned regularly. Iii special trusses that create space below the unconditioned attic. Type of ductwork system the least expensive duct system is a radial system of flexible ducts in an attic running to ceiling grates. When hvac ducts are installed in a vented attic in any climate encapsulate the hvac ducts in attic insulation to protect them from temperature extremes in the unconditioned attic space.

According to nrel researchers david roberts and jon winkler moving the ducts from a vented attic to a new location inside the conditioned space will reduce electricity used for cooling by 15 to 20 and will reduce the size of the needed air conditioning equipment by 0 5 to 1 ton. 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. As most gba readers know ducts belong inside a home s thermal envelope not in an environment that s cold in the winter. Burying ducts in attic insulation.

Install ductwork so that it is in direct contact with i e laying on the ceiling and or truss lower cords. The duct insulation should include a vapor barrier cover. Install ductwork so that it is in direct contact with i e laying on the ceiling and or truss lower cords. If you live in a consistently humid climate a dehumidifier can help keep the air around your ductwork dry.

When air cannot circulate freely throughout your a c system it will become colder inside certain ducts increasing the likelihood of ductwork sweating. Iv conditioned attic and more. The air ducts for a central hvac systems are typically located above a home in the attic or upper crawl space or underneath a home in the space between the foundation and the floor so you don t see them unless you have cause to replace them. Use metal flex or fiber board ducts that are insulated to code.

You shouldn t install ducts in a vented unconditioned attic.