Commissioning Consulting + Software
Mission-Critical Commissioning Software
Built for Real Field Work.
Better test scripts. Clearer readiness tracking. Less rework. Four Knots combines consulting expertise with CxScript Pro to bring structure and speed to mission-critical commissioning.
The commissioning problem.
Fragmented Tools
Scripts, logs, deficiencies, and reports scattered across disconnected systems. Every handoff creates risk.
Slow Script Delivery
Thousands of engineer-hours writing scripts manually. Late deliverables delay startup and erode confidence.
No Readiness Picture
Owners can't see what's actually ready. Generic percent-complete numbers don't tell the real story.
How CxScript Pro works.
From document upload to owner-ready reporting in four steps. Built for the systems and standards commissioning teams actually work with.
Upload
Upload specs, submittals, and sequences. Documents are classified automatically.
Generate
Generate project-specific test scripts for 19 system types across all 5 commissioning levels.
Execute
Run scripts in the field with digital signatures, deficiency logging, and real-time tracking.
Report
Deliver clear readiness dashboards to owners by system, by level, and project-wide.
Our Mission
Raise the standard of commissioning delivery.
Four Knots is a commissioning consulting firm first. We believe mission-critical facilities deserve better tools, cleaner documentation, and honest readiness reporting. CxScript Pro is how we deliver that at scale.
Rigor
No shortcuts. Every test step traces to a standard. Every result is documented.
Transparency
Readiness data should be clear, honest, and accessible to every stakeholder.
Practitioner-Led
Built by people who have done the work, not just the software.
Simplicity
Complex projects need simple tools. We reduce friction, not add to it.
What is mission-critical commissioning software?
Mission-critical commissioning software is a purpose-built platform that manages the full lifecycle of commissioning for high-consequence facilities — from test script generation through readiness reporting. Unlike generic construction or project management tools, it is designed around the specific workflows, standards, and procedural rigor that data centers, hospitals, and critical infrastructure demand.
Traditional commissioning relies on manually authored test scripts, disconnected spreadsheets, and fragmented email chains. On a typical mission-critical project, this approach costs thousands of engineer-hours and introduces inconsistency between team members, projects, and systems. Scripts arrive late, coverage gaps go undetected, and owners receive readiness reports that obscure more than they reveal.
CxScript Pro replaces that fragmented process with a single platform that generates project-specific test scripts, tracks execution in the field, and delivers verified readiness data to owners by system, by commissioning level, and project-wide.
Why generic tools fall short
No standards traceability
Generic platforms have no awareness of ASHRAE, NETA, NFPA, or IEEE requirements. Test steps lack the references auditors and owners expect.
No commissioning levels
Construction tools think in phases. Commissioning teams work in L1–L5 levels with gating requirements between them. General tools cannot model this.
No system-aware readiness
Readiness tracking by percent-complete ignores the reality that a chiller and a UPS have completely different test requirements. CxScript Pro tracks readiness by system type and level.
No script generation
Teams start every project from scratch or copy-paste from the last one. CxScript Pro generates project-specific scripts grounded in your actual specs and submittals.
How L1–L5 readiness tracking works
Mission-critical commissioning follows a five-level workflow. Each level must be verified before the next can begin. CxScript Pro enforces this gating and gives every stakeholder a clear picture of where readiness actually stands.
Factory Witness
Verify equipment meets specifications before it ships. Nameplate checks, protection device testing, insulation resistance.
Installation
Confirm proper delivery, mounting, terminations, and pre-energization testing. Catch issues before power is applied.
Startup
OEM startup procedures, initial energization, setpoint configuration, and BMS I/O verification.
Functional Testing
Stepped load testing, alarm verification, interlock logic, mode transitions, and redundancy failover.
Integrated Systems
Total Power Outage Tests, cascading failure chains, cross-system integration, and owner readiness sign-off.