HVAC and refrigeration specialists for land and marine
RivierX Engineering offers accurate diagnostics and rapid strategic advice to secure and optimize your HVAC and refrigeration installations, on land and at sea.

Audits, onboard inspections, failure analysis and regulatory compliance for yachts and commercial vessels. Evidence-grade deliverables for owners, insurers, shipyards and counsel.
What you get
- Clear scope, fixed deliverables, documented chain of custody.
- Onboard tests: airflow, cooling/heating, leaks, controls & logging.
- Root-cause analysis with photos, measurements and references.
- Actionable plan: repair options, budget ranges, priorities & risks.
Services
Marine HVAC Audit
System health check, performance baseline and risk register for vessels in operation or before purchase.
48-Hour Vessel Diagnostic
Rapid onboard intervention to stabilise issues, capture data and provide a go/no-go decision with next steps.
Onboard Inspection & Survey
End-to-end inspection of AHUs, chillers, VRF, ducting, controls and ventilation, including IAQ spot checks.
Third-Party Expertise & Dispute Support
Independent opinion (EAC) with photos, measurements and standards. Suitable for insurers and counsel.
F-Gas Compliance & Refrigerants Traceability
Registers, leak checks, cylinder tracking and regulatory documentation aligned with EU/FR requirements.
IMO EEXI/CII & Energy Performance
Energy diagnostics, control tuning and recommendations to support compliance and fuel-saving targets.
How we work
1) Brief & Scope
We collect the facts, constraints and evidence paths; define acceptance criteria and deliverables.
2) Onboard Work
Measurements, photos, logs and interviews. We maintain a documented chain of custody throughout.
3) Report & Next Steps
Evidence-grade report with root-cause(s), quantified impact, and a prioritised remediation roadmap.
Legal & Receiving Parties
Our lead investigator (Enquêteur de droit Privé) delivers reports intended for owners, shipyards, insurers and, when relevant, counsel/regulators.
Need a clear, defensible report?
Tell us what’s happening on board; we’ll propose a focused scope, timeline and fixed-fee options.

