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HVAC Commissioning (Cx)

Updated Mar 26, 2026
Systematic verification that HVAC systems perform per design intent. Phases: pre-design, design review, construction observation, functional testing, seasonal testing. Required by ASHRAE 90.1 and most energy codes for commercial buildings.
TAGS
HVACcommissioningtestingverificationenergy
DETAILS
cost
1-3% of HVAC budget
phases
Pre-design, Design, Construction, Acceptance, Seasonal
category
MEP — Commissioning
required by
ASHRAE 90.1, IECC, LEED
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