In the 2026 Malaysian mechanical sector, Photocatalytic Oxidation (PCO) Integration represents the pinnacle of active Air Handling Unit (AHU) restoration. Under the DOSH (JKKP) 2026 Hygiene Codes and MS 1525:2024, PCO technology is utilized to transition an AHU from a passive enclosure into an "Active Air Purifier."
PCO technology uses ultraviolet (UV) light reacting with a titanium dioxide ($TiO_2$) catalyst to create hydroxyl radicals and super-oxide ions. These highly reactive species oxidize gaseous pollutants (VOCs) and destroy the cellular integrity of microorganisms on the fly. At EKG (Malaysia) SDN BHD, we integrate PCO modules as part of an Antimicrobial AHU Refurbishment to ensure a Pathogen-Free environment in high-traffic or clinical zones.
PCO integration is a primary technical strategy for passing the most rigorous 2026 building health audits.
VOC & MVOC Eradication (DOSH 2026): Unlike standard filters, PCO destroys volatile organic compounds (VOCs) and the metabolic gases produced by mold (MVOCs). This is critical for meeting the strict gas-phase contaminant limits in the 2026 ICOP.
Active Microbial Lysis: Per the latest hygiene codes, units must maintain total counts below 1000 CFU/m³. PCO provides 24/7 neutralization of Aspergillus, Legionella, and viruses as they pass through the AHU air stream.
Zero-Ozone Compliance: In 2026, only "Zero-Ozone" certified PCO systems are permitted for occupied spaces. EKG utilizes advanced catalysts that ensure no harmful by-products are introduced into the office or clinical environment.
Before PCO modules are integrated, the AHU Box must be biologically stabilized. PCO is an air-cleaning technology, but it cannot overcome a "Rotting Core" caused by "The Sponge Effect."
| Stage | Engineering Action | Purpose |
| I: HEPA Extraction | Industrial H13 HEPA vacuuming. | Removes the physical dust and fiber shards that would otherwise coat the PCO catalyst. |
| II: Microbial Lysis | pH-neutral enzymatic biocides. | Chemically ruptures existing bio-films in the casing. |
| III: Thermal Disinfection | Vapor treatment at 120°C. | Sanitizes panel joints to ensure the PCO system isn't fighting a "leaking" biological source. |
| IV: ATP Validation | Bioluminescence swab testing. | Provides empirical proof of a 99.9% reduction in biological activity before PCO startup. |
The EKG approach integrates PCO as a seamless component of the AHU's thermodynamic cycle.
Catalytic Grid Placement: We install PCO grids downstream of the cooling coil. This ensures the treated air is delivered directly to the ductwork while also keeping the coil face and drain pan free of bio-films.
Fiber-Free Casing Restoration: PCO works best in high-reflectivity environments. We replace legacy fiberglass with Fiber-Free Closed-Cell Insulation and apply a high-reflectance silver-ion coating to maximize UV bounce and reaction efficiency.
Specific Fan Power (SFP) Management: PCO grids are engineered for ultra-low pressure drop. This ensures the technology provides superior IAQ without pushing your IE5 EC Fan Wall beyond the statutory 1.6 kW/m³/s limit.
Every PCO component and integration material must satisfy BOMBA (JBPM) 2026 life-safety codes.
Class 0 Fire Rating: All mounting frames, gaskets, and catalyst substrates are certified Class 0 (BS 476 Part 6 & 7) for zero flame spread and smoke toxicity.
Electrical Life-Safety: PCO systems are integrated into the Automatic Fire Signal AHU Shut-off loop, ensuring all UV lamps and power modules are instantly de-energized during a fire event.
BOMBA Audit Readiness: We provide the full technical dossier—including fire certs, electrical safety logs, and UV-C leakage test results—required for your annual Fire Certificate (FC) renewal.
Technical Integrity: We are mechanical and T&C specialists, not just equipment vendors. We ensure the PCO system is sized correctly for the airflow and contaminant load of your specific building.
Audit-Ready Reporting: Following integration, we provide a Microbial & VOC Validation Report, essential for your Registered Energy Manager (REM).
GITA Sustainability: PCO integration combined with AHU refurbishment is a recognized "Green" intervention. We provide the data required for your 100% Green Investment Tax Allowance (GITA) claims.
Is your AHU a passive conduit or an active air-cleaning asset?
Contact EKG (Malaysia) SDN BHD today for a professional PCO HVAC Integration Audit & Restoration Plan.
More detail about EKG M & E SDN BHD
Malaysia
