Install ductwork so that it is in direct contact with i e laying on the ceiling and or truss lower cords.
Commercial attic space over ducts.
Shown below is an example of what not to do a grille cut into pull down attic ladder and an example of the right way to add a vent a register in the ceiling of garage that connects directly to a roof vent via a metal duct viewed from the attic.
According to rightsuite the software we use the supply ducts have about 560 square feet of surface area and the return ducts 101 square feet.
The 1 800 square foot brick ranch in climate zone 4 dates from the 1960s but the previous owner installed both a furnace and ductwork in the attic just four years ago.
The unconditioned space also houses his hvac system.
If the ducting is not sealed well and insulated you will have plenty of problems because of the high attic temperatures.
Use metal flex or fiber board ducts that are insulated to code.
Part of the unit is inside and part is on the roof.
Combustion air also called make up air can also be provided by a vent through the wall.
Iv conditioned attic and more.
Your attic will probably be over 100 hotter than the crawlspace.
Additionally some of the attic space is over an outside deck while other sections are over the house s interior space.
Looking at the cooling side only the additional load would be.
My parents own a home about 40 years old and there is black mold coming from the a c ducts.
Ted has more than a few cobwebs in his attic.
The duct insulation should include a vapor barrier cover.
They live in a townhome with no attic or basement or crawlspace of any kind.
Why put the ducts there.
Iii special trusses that create space below the unconditioned attic.
I lowered soffits around room perimeters.
There can be moisture issues in the crawlspace but i would deal with that before choosing to put the ducting in the attic.
Obviously this means a lot of ripping and tearing etc.
If the ducts must be located within a vented attic one option for protecting the ducts and helping to minimize heat transfer between ducts and the unconditioned attic is to lay the ducts on the attic floor and.
You can get the air handler and ducts into conditioned space in several ways without needing a basement or crawl space.
R 8 duct insulation 5 227 btu hour.
They have been told that they need to replace all the ducts.
All the ducts are in the attic.
For homes with ducted heating and cooling systems the best place to locate the duct system from an hvac performance standpoint is within the conditioned space of the home either in dropped ceilings or between floors or in a sealed and insulated basement crawlspace or attic.
When determining how to insulate this attic space various assemblies were taken into consideration and a hybrid combination of vented and unvented attic space was planned.
Furnaces ducts and air conditioning ac equipment run throughout the attic spaces on all levels except the dormers and the space over the outside deck.
