If you have a custom office library, you can link it for quick access within Revit: File Locations Green "+" (Add)
A link is only as good as the data at the end of it. Here are five non-negotiable rules for maintaining your Revit MEP library link: revit mep library link
Go to Manage Tab > Revit Links > Manage Families (or File > Manage > Purge Unused ). Look for families listed in italic red —these are broken links. If you have a custom office library, you
Example: