Return Air Grille vs Supply Diffuser
Return and supply devices look similar but function differently. Installing wrong type affects system performance.
Stop if
- Is this device a return grille or supply diffuser? And which duct run should it connect to?
Watch out
- Don't assume all ceiling devices are the same. Don't install without checking drawing labels.
Check
- What does the drawing label show - return or supply?
- Is there a damper on the supply?
Steps
- What does the drawing label show - return or supply?
- Is there a damper on the supply?
Say this to your foreman
Is this device a return grille or supply diffuser? And which duct run should it connect to?
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