Ducts In Attic Or Crawl Space

See the article i linked to for more details.

Ducts in attic or crawl space.

Seal supply boxes with mastic. Now your sealed and insulated attic and your hvac duct system is protected from extreme temperatures like your crawlspace or basement. And you win big time. Knowing the disadvantages of attic install and the crawl space install.

Ceiling diffusers can help route vents to alternative locations avoiding lengths of ductwork. 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. Strap ducts out of insulation with 3 ductstraps per specifications. Ii lowered ceilings in hallways.

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 majority of ducts are installed in unconditioned attic spaces and crawl spaces where they are out of sight. I lowered soffits around room perimeters. 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. The crawl space is an unconditioned 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. While the attic install isn t ideal it beats the problems that come with ducts.

Iii special trusses that create space below the unconditioned attic. Ductwork can eat into living space so innovative space saving features like squeeze elbows are in demand. I vote for the attic. Iv conditioned attic and more.

You can get the air handler and ducts into conditioned space in several ways without needing a basement or crawl space.