Hvac Ductwork Attic Ductwork Layout

Make sure your hvac contractor follows these duct design best practices and principles using manual d.

Hvac ductwork attic ductwork layout.

This equal friction method of duct sizing should be adequate for normal residential furnace heating and air conditioning applications. Remodeled home attic mounted hvac unit return box mounted approx 18 from side of ahu end has 20 flex duct attached and run in a big loop 10 15ft around to the end of the ahu. Includes a full worked example as well as usin. We have over 50000 hvac parts available to us.

Contractors can make the mistake of failing to consider the type of air conditioning system you have load requirements of different rooms where ducts and equipment are located and the materials used. Route ducts between joists in a basement if possible or over them if necessary. Place ducts on top of joists in a ceiling or attic. With newer foundation systems involving embedded rebar or tension cables making in slab hvac ductwork nearly impossible there s little other option but to move it to the attic.

As i have been researching it seems that placing the ductwork within a conditioned space is more energy efficient than having it run through an attic area. This allows us to get rid of useless unconditioned attic space at the same time. Here are some of the common ductwork design mistakes that impede the function of your air conditioning. Ductwork design mistake 1.

Hvac layout design. Situate the air handler close to the center of the layout to minimize the length of ductwork spans. The layout and installation of the duct system will incorporate these basic principles of good ductwork design. Ductwork diy heating and cooling product sales for the do it yourself home owner.

Make the layout as symmetrical as possible with branch ducts spaced evenly along the trunk duct and each branch of similar length. In this video we ll be learning how to size and design a ductwork for efficiency. The following duct sizes are based on a fraction drop of 10 inches per 100 feet of lineal duct. Larger volumes or higher static pressures should be dealt with on an individual job basis.

Wouldn t it be better to just have the duct run directly 18 to the ahu. 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. How to design a duct system.