Aug 12, 2026
How to Number and Label RTUs, Condensing Units & Refrigeration Equipment
A contractor's guide to equipment ID labels for rooftop units, condensing units, and air handlers — numbering conventions, materials that survive the roof, and code notes.
#RTU labels
#HVAC labels
#condensing unit
#equipment ID
#rooftop unit
#refrigeration
#mechanical contractor
#equipment numbering
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