Ductwork In Attic Or Crawlspace

While the attic install isn t ideal it beats the problems that come with ducts.

Ductwork in attic or crawlspace.

If the ducts are in an unconditioned attic you can put spray foam insulation on the roof deck. Your home s supply and return ducts may or. Installing ductwork in the crawl space beneath a home limits movement and poses a lighting challenge. Think about it condensation on ductwork probably isn t a big problem in phoenix arizona but why.

Knowing the disadvantages of attic install and the crawl space install. Ceiling diffusers can help route vents to alternative locations avoiding lengths of ductwork. 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. How to insulate furnace ductwork in a crawlspace 1.

There can be moisture issues in the crawlspace but i would deal with that before choosing to put the ducting in the attic. Iii special trusses that create space below the unconditioned attic. 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.

I vote for the attic. Just like when you have too little insulation if you have an excessive amount of humidity near your ductwork either in your attic or crawlspaces then you increase the likelihood of condensation forming. If there is a dirt or gravel floor put down a vapor barrier then seal it off with concrete slurry. Ii lowered ceilings in hallways.

Seal supply boxes with mastic. The accessibility of a home s ductwork is a key factor in estimating the cost to replace it. You can get the air handler and ducts into conditioned space in several ways without needing a basement or crawl space. Finding space for ductwork in the.

Measure the circumference of the ducts running through your crawlspace. 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. If you have ductwork in your crawl space the temperature of the duct will be the same as the temperature of the crawl space. This means that like an attic or unfinished basement you don t heat and cool it.

Cut the insulation with the utility knife in sections 2 inches larger than the circumference of the duct. If the ducts are in an unconditioned crawl space you can encapsulate. If the ducting is not sealed well and insulated you will have plenty of problems because of the high attic temperatures. I lowered soffits around room perimeters.

Ductwork located in an attic crawl space may be difficult to get to and creates a hot and potentially hazardous environment for the crew. Ductwork can eat into living space so innovative space saving features like squeeze elbows are in demand.