In mission-critical healthcare and pharmaceutical environments, the AHU casing serves as the primary barrier against external contaminants and internal microbial proliferation. An Antimicrobial Double-Skin Casing is a high-performance envelope engineered to meet MOH (Ministry of Health) Malaysia clinical standards and ISO 14644 cleanroom requirements.
Beyond hygiene, this casing is a core component of EECA 2024 compliance, as its thermal integrity directly influences the Building Energy Intensity (BEI) by preventing "coolth" loss and moisture-driven degradation.
The "Double-Skin" construction consists of an inner and outer metal layer with a high-density insulation core. In an antimicrobial specification, the materials are upgraded for biological resistance.
Inner Skin (SUS 304/316): The internal surface is typically medical-grade stainless steel. This non-porous material withstands aggressive chemical disinfection and provides no "foothold" for biofilm or mold.
Antimicrobial Powder Coating: The external and (optionally) internal panels are treated with silver-ion ($Ag^+$) technology. These ions actively penetrate the cell walls of bacteria and fungi, inhibiting their ability to reproduce on the unit's surface.
High-Density PU Foam Core: We utilize injected polyurethane foam ($40\text{--}50\ kg/m^3$). Unlike fiberglass, PU foam is moisture-resistant and does not "shed" fibers into the clinical air stream.
In Malaysia’s tropical humidity, a casing that "sweats" is a severe biohazard. External condensation leads to mold growth on the AHU exterior and the plant room floor.
Total Thermal Decoupling: Our TB2-rated casing utilizes non-metallic thermal breaks that physically separate the inner and outer skins. This ensures the outer panel stays above the dew point, even when the internal air is $7^\circ\text$.
Eliminating the "Sweat" Factor: By preventing condensation, we protect the antimicrobial coating's effectiveness and prevent the structural corrosion that can eventually compromise the unit's L1-class airtightness.
| Feature | Standard Commercial Casing | EKG Antimicrobial Casing |
| Inner Skin Material | Galvanized Steel (GI) | Stainless Steel (SUS 304/316) |
| Surface Activity | Passive / Porous | Active Antimicrobial ($Ag^+$) |
| Insulation Type | Fiberglass (Risk of shedding) | Injected PU Foam (Closed-Cell) |
| Thermal Rating | Standard Double-Skin | TB2 Thermal Break (Anti-Sweat) |
| Airtightness | L3 Leakage | L1 Precision Sealed (Clinical) |
| Hygiene Compliance | Industrial / LEED | MOH / ASHRAE 170 / ISO 14644 |
The interior of an antimicrobial casing is engineered to be "Flush and Smooth."
Rounded Internal Corners: We utilize coved internal corners to eliminate 90-degree "dead zones" where dust and microbes typically accumulate and evade cleaning.
Flush-Mounted Access Doors: Doors are designed with "Dual-Fin" gaskets and flush frames to maintain a perfectly smooth air-path, reducing turbulence and the Specific Fan Power (SFP).
Leakage Prevention (L1 Class): To maintain the sterile integrity of a cleanroom, the casing must be airtight. Our L1-rated construction ensures that no unconditioned, contaminated plant-room air is sucked into the unit.
Technical Integrity: We provide the Material Safety Data Sheets (MSDS) for antimicrobial coatings and TB2/L1 Certification required for clinical audits.
Cleanroom Precision: Our units are engineered for high-pressure applications ($1,500\text{--}2,500\ Pa$) typical of HEPA-filtered surgical suites.
2026 Energy Compliance: By utilizing TB2 technology, our casings minimize thermal migration, helping your facility maintain its 4-star or 5-star BEI rating under EECA 2024.
Is your AHU casing a liability for your facility's hygiene or energy goals? Contact EKG (Malaysia) SDN BHD today. We specialize in engineering antimicrobial envelopes that are silent, sterile, and ultra-efficient.
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