Ductwork Color Coding
Some projects require color-coded ductwork for system identification.
Green / Field Check1st yearBatch 2
What You Might Be Looking At
ductwork painted or labeled with specific colors for supply, return, exhaust, or other systems
Apprentice words: paint the duct, duct color, system color, pipe color
Trade terms: duct color coding, system identification color, painted duct
Check First
What color coding does spec require?
Is it per ASME A13.1 or project-specific?
What colors for supply, return, exhaust?
What Not To Do
Don't paint duct without checking color requirements. Don't assume standard colors.
What can go wrong: Inspector rejection, maintenance confusion, safety issues, code violation
Better Foreman Question
For this project, what duct color coding is required? And should I paint before or after installation?
Verify With
Reference type: project specs, ASME A13.1
Source to verify: ASME A13.1, project specification Section 23 05 00
Safe wording: Color coding requirements vary by project.