In the old days, the HVAC industry just accepted the Ductulator's biggest limitation which was its inability to change the friction rate setting. The Ductulator might have been a great tool to use as part of the Manual D process before Right-Suite® Universal was launched, but as technology has evolved, so has the need for HVAC Professionals to be more precise with all their design choices - including ductwork.
Right-Suite® Universal’s Right-D® capabilities altered the status quo by allowing users to factor in changes to the friction rate setting. With RSU®, the math is done for you, and every small nuance is taken into consideration. In fact, computers have basically eliminated the kind of careless mathematical mistakes humans are prone to make. The software also won’t allow contractors to leave out important pieces to the pie like friction rate. Once all the correct data has been input, and the calculations have been completed, the software automatically chooses the right duct sizes to remove one more layer of potential human error.
Additionally, RSU®’s Right-D® inspires users to remember every situation is unique. Just because a home is single-story, built between 1980-1990 and located in Miami, FL, built with similar building materials, similar sq. footage, etc. does not mean every home fitting this profile will require the same sized ducts.
A Delicate Balancing Act
Since duct design is not a one size fits all scenario, part of your job is to create a balanced situation where all the HVAC components work in harmony. As you know, many different equipment combinations can be used to solve the specific HVAC requirements for any given home. RSU® is great for “what if” scenarios. You can change the static pressure, change fittings, move the system to a new location to accommodate an open concept, and a myriad of other potential changes. All the calculations will be automatically updated behind the scenes as you try different configurations. This makes Manual D the easiest, fastest and most accurate way to decide which design will be the best one for each customer. In terms of duct sizes, every time you make a change, the software will potentially change the duct sizes you need for each configuration. Just as you can use different systems and fans to accommodate a home’s needs, the duct sizes are just as likely to change with the different configurations. (Please see Example #1 and Example #2.)