Attic Ductwork Design

Remember that article i wrote about ducts installed against the roof deck and how i said it was probably the absolute worst single location for installing ducts.

Attic ductwork design.

Ductwork design mistake 5. Well in the comments dave roberts a senior engineer at the national renewable energy lab nrel wrote about a paper he co authored last year and included a link to it. The purpose of residential ductwork design is to properly distribute the airflow produced by your heating cooling system to your house. Ductwork design to promote balanced air circulation through the supply ducts home and return ducts the ductwork should be simple in layout accurately sized sealed insulated in unconditioned spaces and installed in the right places.

One on a concrete slab. 10 1 duct fittings and transitions. Then by heating cooling that air delivering the newly conditioned air to your home. Adapt the design to the type of unit.

Return duct systems. 9 2 central return. A raised truss would also be used. 9 1 distributed return.

This involves return air unconditioned coming into the heating cooling system. Up against the deck may be the worst place in the attic to. Sketch a rough design using a central supply duct from the unit to the opposite end of the house with branches forking to each outlet. 10 2 volume control dampers.

Not providing enough returns is a common ductwork design flaw that leads to comfort complaints. Duct fittings and terminal units. This involves return air unconditioned coming into the heating cooling system. 10 4 diffusers grilles registers.

I have found all of these discussions informative. The purpose of residential ductwork design is to properly distribute the airflow produced by your heating cooling system to your house. It was new when the ac was put in 7 years ago. 10 3 fire and smoke dampers.

9 3 pressure balancing. I am planning to build a single story home near crystal river fl. Recently i had another hvac company come out and put in a new bathroom vent and they told me they believed the duct work was full of water. The attic ductwork is flex duct work.

Information relating to thermal characteristics of each room as well as the local climate is utilized by the software. And am thinking on laying the duct work on the attic floor covering the floor and ducts with 2 3 inches of cc foam and then blow insulation over all. To maintain balanced air pressure and air movement your duct system needs return vents for air in the room to be pulled back into the hvac system.