SASO Mandates Dual Safety Certification for Stainless Steel Ducts

Saudi Arabia’s Standards, Metrology and Quality Organization (SASO) issued an urgent update to its HVAC Equipment Mandatory Certification List on May 12, 2026. The revision introduces stainless steel air duct systems as a newly mandated certified product category — a move directly tied to heightened safety requirements for mega-projects such as NEOM and Qiddiya, where HVAC integrity impacts occupant safety, fire resilience, and long-term system reliability.

Event Overview

On May 12, 2026, SASO updated its Mandatory Certification Directory for Heating, Ventilation, and Air Conditioning Equipment. Stainless steel ductwork is now included as a compulsory certified item. Compliance requires successful testing against both IEC 60335-1 (General Requirements for Household and Similar Electrical Appliances) and IEC 60335-2-40 (Particular Requirements for Heat Pumps, Air-Conditioners and Dehumidifiers). Test reports must be issued exclusively by SASO-recognized laboratories. The regulation takes effect on August 1, 2026, and applies to all stainless steel duct supply contracts for active construction phases of NEOM, Qiddiya, and other designated national mega-projects.

Industries Affected

Direct Exporters and Trading Firms: Companies exporting stainless steel duct systems to Saudi Arabia will face immediate certification gatekeeping. Pre-clearance under the dual-standard regime is now mandatory before customs release or site delivery — meaning longer lead times, higher pre-shipment compliance costs, and potential contract renegotiation if existing agreements lack certification clauses.

Raw Material Suppliers: Producers of stainless steel coils, sheets, and fabricated duct components must now ensure traceability and material documentation align with IEC 60335-2-40’s thermal and electrical insulation requirements — even though ducts themselves are non-powered. This implies tighter controls on surface treatments, jointing methods, and grounding provisions that may affect material specifications previously considered sufficient for mechanical-only applications.

Manufacturers and Fabricators: Local and regional duct fabricators supplying into Saudi projects must revalidate their production processes — especially welding, seam sealing, and flange assembly — against electrical safety criteria (e.g., creepage/clearance distances, enclosure integrity under fault conditions). Unlike prior mechanical performance standards, this shift introduces electrical hazard assessment into traditionally non-electrical products.

Supply Chain Service Providers: Third-party certification consultants, lab coordination agents, and conformity assessment bodies must now expand technical capacity to interpret and apply IEC 60335-2-40 in the context of passive duct systems. Their service scope must include gap analysis between current fabrication QA protocols and the new dual-test requirement — not just test execution.

Key Focus Areas and Recommended Actions

Verify laboratory recognition status ahead of submission

SASO only accepts test reports from labs explicitly listed in its latest recognition database (updated May 2026). Firms should confirm lab accreditation scope covers both IEC 60335-1 and IEC 60335-2-40 for duct assemblies — not just individual components.

Review and revise technical documentation packages

Technical files must now include risk assessments addressing electrical hazards (e.g., induced currents, grounding continuity, proximity to refrigerant lines), even for non-powered ducts — per Clause 20.102 of IEC 60335-2-40. Existing mechanical submittals are insufficient.

Assess impact on project timelines and contractual obligations

Testing cycles for dual-standard compliance typically require 6–8 weeks. Contractors and suppliers engaged in NEOM/Qiddiya phase deliveries must audit upcoming milestones against this new timeline buffer — particularly for ductwork scheduled for installation between August and December 2026.

Editorial Perspective / Industry Observation

Observably, SASO’s inclusion of stainless steel ducts under IEC 60335-2-40 reflects a broader regulatory trend: the convergence of mechanical infrastructure standards with electrical safety frameworks in integrated building systems. Analysis shows this is less about inherent electrical risk in ducts and more about system-level safety assurance — especially where ducts interface with heat pump condensers, variable refrigerant flow (VRF) units, or electrically heated air handling sections. From an industry perspective, this signals a de facto expansion of ‘electrical vicinity’ definitions in HVAC design standards across GCC markets. Current more relevant interpretation is not that ducts are becoming appliances, but that HVAC systems are being treated as unified safety-critical assemblies — with implications likely to extend beyond Saudi borders in coming years.

Conclusion

This regulatory update marks a structural shift in how passive HVAC components are governed in high-profile infrastructure programs. It underscores that compliance is no longer segmented by component type but increasingly driven by system integration logic. For global suppliers, the lesson is clear: upstream alignment with evolving safety architectures — not just mechanical specs — is now central to market access in strategic Gulf projects.

Source Attribution

Official notice published by SASO on May 12, 2026, via the SASO e-Regulatory Portal (Notice No. SASO/REG/HVAC/2026/008). Full text of updated mandatory list and lab recognition annex available under ‘Mandatory Conformity Assessment Programs’. Note: SASO has indicated that implementation guidance documents and FAQs are pending publication; stakeholders are advised to monitor the portal for updates through July 2026.