
HRAI Duct Calculation and Sizing Made Easy
Overview.
Wrightsoft is pleased to offer Right-Duct™ for HRAI’s new high-speed duct calculation and sizing method. Right-Duct requires room-by-room loads, the friction loss rate for the longest run in the system, and very little else. When combined with Right-F280™ and Right-Draw™, your ducts are automatically sized and layout is drawn as the load is entered. Right-Duct requires at least one load calculation module in order to operate (Right-J®, Right-CommLoad™, Right-N® or Right-F280™.)
Bottom Line.
Developed with HRAI with fully automatic features for branch splitting, trunk reductions, velocity limiting, and standard duct sizes, Right-Duct is the fastest and most accurate way to produces a duct system design.
Wrightsoft gives me more than just a number, it tells me what size
–Bill Buffington,
WA Buffington Co.
With Right-Duct, the ducts are automatically sized based on the airflow and static pressure.

The Right-F280 worksheet is a computerized version of CSA's F280-12 load method.
Use the libraries to select your building materials and rapidly calculate your load!
We Highly Encourage Using Right-Duct with Right-Draw. To have visual duct design, as shown above, you must own Right-Draw.

Set your preferences, draw your floorplan, and your duct design is practically done for you!