Attic Ductwork Design

I am planning to build a single story home near crystal river fl.

Attic ductwork design.

9 2 central return. Duct fittings and terminal units. A raised truss would also be used. Information relating to thermal characteristics of each room as well as the local climate is utilized by the software.

The attic ductwork is flex duct work. It was new when the ac was put in 7 years ago. Return duct systems. 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.

9 1 distributed return. This involves return air unconditioned coming into the heating cooling system. 10 3 fire and smoke dampers. 6 tips for good ductwork design.

The purpose of residential ductwork design is to properly distribute the airflow produced by your heating cooling system to your house. 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. This involves return air unconditioned coming into the heating cooling system. 8 7 rules of duct design acca manual d residential duct systems 9 0.

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. The purpose of residential ductwork design is to properly distribute the airflow produced by your heating cooling system to your house. One on a concrete slab. Not providing enough returns is a common ductwork design flaw that leads to comfort complaints.

9 3 pressure balancing. Ductwork design mistake 5. 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. What goes into good ductwork design good ductwork design starts with a load calculation using manual j software the standard program produced by the air conditioning contractors of america.

10 2 volume control dampers. 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. Up against the deck may be the worst place in the attic to. Adapt the design to the type of unit.

I have found all of these discussions informative. 10 4 diffusers grilles registers. 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.