Provide a way to run loads and layout Ductwork and Air terminals within Revit?

When doing room definitions for load calculations there are some properties that pertain to many or all other rooms in the building like "ceiling height" and the "roof properties."

I think it would be useful to have a command like match wall properties for the room properties so I can set up the roof (which almost always applies to the whole building), ceiling height, ventilation requirements, etc. and copy from one room to any others that have the same properties.

When working at a smaller scale (ie. 1/8th"), make it so the duct center lines always appear the same size. The duct center lines are drafting tools only and do not appear on the drawing therefore having them adjust with the DIMSCALE is not neccesary. When the DIMSCALE is changed to 96 or higher, drafting in tight spaces can be difficult when the duct centerlines are large because the arrows are too large to work with and tend to overlap others.

Provide a graphic for windows/glass located on walls so you can see easily and quickly figure out which windows have been entered into the load calculation.

Additional idea: Make it a dynamic block so that when you change the width (using a grip) you can stretch the window to change the actual width. The width x height would display above this graphic.

Convert existing ductwork and piping layer to demolition.

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 a command to allow you to edit the settings on multiple rooms at a time.

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).