Whole Building System Commissioning and Retro-Commissioning

Structured third-party commissioning delivering two specialized streams: Whole Building System Commissioning for new facilities, and Retro-Commissioning (RCx) for restoring efficiency in existing operating buildings.

Engineers commissioning an air handling unit
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Whole Building System Commissioning and Retro-Commissioning

Scope & Standards

Technical Scope of Work

Structured third-party commissioning delivering two specialized streams: Whole Building System Commissioning for new facilities, and Retro-Commissioning (RCx) for restoring efficiency in existing operating buildings.

check_circleWhole Building System Commissioning: Pre-functional checks, electrical phase rotation, and duct cleanliness auditing
check_circleRetro-Commissioning System (RCx): Operational diagnostics, sequence-of-operation recalibration, and comfort drift rectification
check_circleDynamic functional testing across design operating, emergency, and interlock modes
check_circleStart-up witnessing and manufacturer coordination during initial equipment energization
check_circleDDC/BMS control-loop verification (temperature control, freeze stat, and actuator stroke)
check_circleLife-safety matrix testing: Fire alarm shutoff, fire/smoke damper interlocks, and stairwell purge fans
check_circleComprehensive commissioning closeout dossier and consultant deficiency register tracking

Core Commissioning Streams

Whole Building System Commissioning

Total building MEP verification for new construction. Inspects installations against design criteria, verifies static pre-functional items, witnesses equipment energization, and validates fully integrated system performance before handover.

Retro-Commissioning System (RCx)

Diagnostic evaluation and performance re-tuning for existing operational facilities. Identifies operational drift, resolves sensor inaccuracies, optimizes sequence-of-operation, rectifies hot/cold spots, and restores design energy efficiency.

Functional Sequence & Safety Verification

Rigorous testing of dynamic sequences under full, partial, and emergency loads—including life-safety shutdown matrices, smoke management sequences, and automated BMS control loops.

Closeout Documentation & Handover

Compiling verified checklists, closed punch items, signed consultant witness records, and complete commissioning dossiers for owner and facility operations.

Standard Handover Deliverables

Equipment Checklists

Static pre-start verification records for each installed mechanical asset.

Functional Test Records

Documented proof of sequence-of-operation adherence under actual load conditions.

Open Items Punch Register

Itemized tracking of non-conformance points until approved by the consultant.

Commissioning Dossier

Complete bound package containing all verification sheets and vendor certifications.