You are here: Home > Support > Knowledge Base > Connecting Ducts Between Floors

Connecting Ducts Between Floors

Wednesday, November 20th, 2013

There are two ways to connect ductwork between floors of a building, depending upon whether the floors are on the same drawing or different drawings.

Floors on the Same Drawing

If your floors are all in the same drawing, draw your vertical duct on each floor and connect them with a duct. Query the connecting duct and set the Graphics to Transparent. That will keep the air flowing between the floors, but not actually draft anything. If you use our pressure drop calculations, set the pressure drop in the section to 0.

Floors on Different Drawings

If your floors are on different drawings, use the Insert Drawing to Drawing Connection command.

Ribbon: DM HVAC->Ducts-> dm_dm-util ->Insert Drawing to Drawing Connection

Pulldown Menu: DM HVAC->Duct Centerlines->Insert Drawing to Drawing Connection

It will connect two drawings for you.

For more information, visit the Insert Drawing to Drawing Connection page in the Design Master HVAC user manual.

Related Articles

Filter by
Post Page
HVAC HVAC Drafting Diffusers Ductwork Electrical Plumbing Electrical Drafting Plumbing Drafting Installation, Licensing, and Software Management
Sort by

Duct-Mounted Diffusers

Design Master HVAC does not have a command specifically for inserting or connecting duct-mounted diffusers and grilles. However, you can approximate them by inserting the diffuser close to the duct to which it is mounted.


“Locked Layer” Error Message

Design Master typically unlocks any locked layers it needs to use to function. If it can’t, it will display an error message telling you to unlock the layers.


Stacked Fractions in CAD Labels

You can use in-line formatting to display some Design Master values as stacked fractions when they appear on the drawing.


DM Entities Insert Skewed or in the Wrong Location

If your Design Master entities come in skewed or in a different location than the one you specified, try resetting your drawing view to “Top” and reinserting.


Working Remotely With Design Master

Here are a few ways you can continue using Design Master collaboratively on projects while working remotely.


Ductwork Double Lines Are Overextended

If double lines are being drawn past where the duct centerline ends, you may need to straighten some of your ducts.



Electrical for Revit

Electrical for AutoCAD

HVAC for AutoCAD

Photometrics for AutoCAD

System Requirements


Contact Support

Install & Update Instructions

Online Training

Knowledge Base

User Manuals


Release Notes


Wish List

Remote Support



Customer Stories





Electrical for Revit

Electrical for AutoCAD

HVAC for AutoCAD

Photometrics for AutoCAD

Free Trial

Electrical for Revit

Electrical for AutoCAD

HVAC for AutoCAD

Photometrics for AutoCAD

8000 Regency Parkway, Suite 585
Cary, NC 27518
[email protected]

©2001-2023, Design Master Software, Inc