Ducts In Attic Or Crawl Space

Knowing the disadvantages of attic install and the crawl space install.

Ducts in attic or crawl space.

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. And you win big time. If you have ductwork in your crawl space the temperature of the duct will be the same as the temperature of the crawl space. While the attic install isn t ideal it beats the problems that come with ducts.

If the ducts are in an unconditioned crawl space you can encapsulate. As don peek says in the comments below it may be more cost effective in existing homes to seal and insulate the ducts as well as you can. In the winter a crawl space can be significantly colder than the living spaces of your home. Leaks from air conditioning condensate probably are not the worst moisture problem in a.

If the ducts are in an unconditioned attic you can put spray foam insulation on the roof deck. Sweating ducts in crawl spaces and attics getting mad. Strap ducts out of insulation with 3 ductstraps per specifications. See the article i linked to for more details.

I lowered soffits around room perimeters. You can get the air handler and ducts into conditioned space in several ways without needing a basement or crawl space. Iii special trusses that create space below the unconditioned attic. In addition to understanding the fundamentals of psychrometrics dewitt pointed out that hvac contractors.

Now your sealed and insulated attic and your hvac duct system is protected from extreme temperatures like your crawlspace or basement. 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. Ii lowered ceilings in hallways. The crawl space is an unconditioned space.

I vote for the attic. This means that like an attic or unfinished basement you don t heat and cool it.