When the same diffusers are located in the same room, it would be nice if there was an option to label one diffuser and then (TYP and then the quantity it applies to) as opposed to labeling each individual grille/diffuser. This would help clean up the drawings quite a bit from unneeded notations.

In the diffuser tag, add a spot to list the diffuser neck size (so the duct runout doesn't need to be labeled and will clean the drawings up). It would be nice if one diffuser tag can be used for various diffuser neck sizes, for instance, a CD-1 is more of a description of the diffuser type and model and a pull down with diffuser neck size would be input, then the schedule can list CD-1 with a line for quantity of each diffuser size. This would make creating a master schedule much simpler.

I would like to be able to have the duct size update on the plans (like a preview) without closing the dialog box.

Allow for equipment schedules to be created by use, such as chiller, air handlers, pumps, etc. The schedule would be populated with equipment that is drawn by DM equipment command

In the diffuser definition dialog box, designate whether it is a 1W, 2W, 3W or 4W diffuser, then attach that number of arrows. When placing the diffuser, allow the user to rotate the diffuser to align the appropriate air flow direction.

When printing load calculations, have a Select All/Unselect All check box. It's a bit tedious to do manually.

Allow us to create an Equipment Database similar to the diffuser database which would include dimensions, and notes such as: electrical requirements, efficiency, performance data at design conditions, etc. The equipment should also be included in the takeoff report.

Add leader for duct text like it does when you add a grille, diffuser, or light fixture

Add a label and leader for the callout to mechanical equipment.

HVAC diffusers have air flow patterns much like light fixtures have photometric patterns.

Air Diffuser manufacturers supply the pattern shapes and provide the distances in feet for airflow velocities at 150FPM, 100FPM and 50FPM for heating and cooling.

Is there a way you can give the DM user the ability to insert their own airflow pattern (through a formatted file input) with contour lines similar to DM photo metrics?

This would be DM's start into Computational Fluid Dynamics.

It would be great if when entering the equipment you could enter system capacity; then when running the load calc, similarly to what DM offers for CFM, you could have Current BTUs and Required BTUs. This could be per zone.

Add a transfer grille option for return air so that you can use the balance report function on projects which use transfer grilles.

Display equipment information in takeoffs. (Currently the equipment blocks are graphical only, mainly for 3D drafting).

Add an option for the default "max depth" value that is used when you insert a new duct. Currently it always starts at 24 and you have to remember to change it if you want something different.

Weight of ducts in HVAC Takeoffs provide a very simple way to estimate cost of projects.

Or, add an option to calculate square feet of sheet metal ductwork.

Be able to right click or slow-double-click on a room name in the Zone Tree or Floor Tree to be able to change it

Add acoustical calculations to the ductwork.

A simple command that checks the number of volume dampers to the number of diffusers/grilles/registers in the database.