How to Reload Missing HVAC Ribbons & Pulldown Menus
The ribbon and/or pulldown menu tab for Design Master HVAC is missing.

Solution
Type one or both of the following commands at the command line and press ENTER to reload the missing tab(s):
- Ribbon:
DMHRIBBON - Pulldown:
DMHPULLDOWN
If you enter the above commands and the command line returns UNKNOWN COMMAND, you will need to reconfigure AutoCAD to reload your menus.