Ducts In Attic Or Crawl Space

Ceiling diffusers can help route vents to alternative locations avoiding lengths of ductwork.

Ducts in attic or crawl space. Insulate and air seal the floor with open cell foam put ductwork and mechanicals in the attic install a radiant barrier and mastic seal the ducts. Ductwork can eat into living space so innovative space saving features like squeeze elbows are in demand. See the article i linked to for more details. Ii lowered ceilings in hallways.

Ducts in your attic and crawl space can become disconnected due to rodent infestations flooding or just ordinary house settling. Large gaps between duct sections provide an exit point for the heated and cooled air before it has a chance to reach the vents in your rooms. Knowing the disadvantages of attic install and the crawl space install. If you have ductwork in your crawl space the temperature of the duct will be the same as the temperature of the crawl space.

Now your sealed and insulated attic and your hvac duct system is protected from extreme temperatures like your crawlspace or basement. Seal supply boxes with mastic. The crawl space is an unconditioned space. The majority of ducts are installed in unconditioned attic spaces and crawl spaces where they are out of sight.

While the attic install isn t ideal it beats the problems that come with ducts. That same ac system that could never cool your bedrooms now with a sealed and insulated attic is providing supply airflow temperatures on par with the same unit located under a house. The hot air leaves your furnace at the desired temperature. This means that like an attic or unfinished basement you don t heat and cool it.

In the winter a crawl space can be significantly colder than the living spaces of your home. Iv conditioned attic and more. Strap ducts out of insulation with 3 ductstraps per specifications. Iii special trusses that create space below the unconditioned attic.

I lowered soffits around room perimeters.