In the high-performance mechanical landscape of KL and Selangor, air leakage is a direct drain on profitability. EKG M&E Sdn Bhd provides ducting solutions engineered to SMACNA Leakage Class A, the most stringent commercial airtightness standard. By adhering to Class A requirements, we ensure that every joint, seam, and penetration is sealed to prevent air loss, allowing your HVAC system to deliver maximum cooling capacity while maintaining the static pressure required for optimal building performance.
We apply SMACNA Class A sealing protocols to all ductwork categories, including supply, return, and exhaust, to ensure total system integrity.
1. High-Pressure Primary Risers (Energy Conservation)
In large-scale commercial towers, the vertical risers handle the highest static pressures and are most prone to "whistling" and energy loss.
Transverse Joint Sealing: We utilize TDF/TDC Flange systems with high-memory neoprene gaskets. These joints are mechanically fastened to withstand high internal pressures without breaching the airtight seal.
Longitudinal Seam Treatment: Every longitudinal seam (Pittsburgh or Snap-lock) is treated with a specialized non-hardening polymer sealant during the fabrication process to ensure zero leakage along the duct length.
2. Cleanrooms and Laboratories (Pressure Integrity)
For facilities requiring precise pressure differentials, a Class A leakage rating is a mechanical necessity.
Sealant Compatibility: We utilize low-VOC, anti-fungal sealants that meet 2026 IAQ Standards, ensuring the airtight barrier does not off-gas or harbor microbial growth in sterile environments.
Zero-Bypass Integration: Our Class A ductwork is engineered to integrate seamlessly with HEPA filter modules and MERV-13 modules, ensuring the pressure required for filtration is maintained throughout the circuit.
3. Concealed Ceiling Plenums (Condensation Prevention)
Leaky ducts in humid Klang Valley ceiling voids cause cold air to hit warm, moist air, leading to "sweating" and mold.
Thermal Integrity: By eliminating leaks, we prevent the localized cooling of the ceiling plenum. This protects your architectural finishes and ensures that the 70% RH Moisture-Shield insulation performs at its full R-value.
Acoustic Silence: SMACNA Class A sealing eliminates the "hissing" sounds caused by air escaping through small gaps, providing a silent air delivery system for executive offices and boardrooms.
As a specialist M&E contractor, EKG ensures the Class A standard is verified through rigorous testing:
Multi-Point Sealing Strategy:
We don't just seal the flanges. Our Class A protocol involves sealing all transverse joints, longitudinal seams, and even the smallest duct wall penetrations (such as damper rods and sensor ports). This "Total-Seal" approach is what differentiates Class A from standard ventilation grade.
Duct Leakage Testing (DW/143 & SMACNA):
To prove compliance, we perform a Duct Leakage Test (DLT). We isolate a section of the ductwork, pressurize it to its working limit, and measure the exact leakage rate. This data is compiled into a certified report for your M&E consultant, validating that the system meets the allowable leakage limit for its surface area.
Advanced Gasketing Technology:
We move beyond standard foam tapes. We utilize 4-bolt flange systems combined with closed-cell gaskets that maintain their elasticity over a 15-year lifecycle. This ensures the ductwork remains Class A compliant even as the building settles and undergoes thermal expansion.
| Feature | SMACNA Class C (Baseline) | EKG SMACNA Class A |
| Sealing Level | Transverse joints only | All joints, seams, & penetrations |
| Leakage Allowance | Moderate (Energy loss) | Minimal (Maximum Efficiency) |
| Static Pressure | Low to Medium | High (Up to 2500 Pa) |
| Energy Impact | 10% - 15% wasted cooling | Near 100% Cooling Delivery |
| Audit Readiness | Variable | EECA 2024 & GBI Ready |
Engineering Discipline: We treat SMACNA standards as a minimum baseline. Our internal quality control ensures that every fabrication and installation team adheres to the highest airtightness protocols.
Verified Performance: We provide the technical documentation—pressure test logs and leakage calculations—needed to support your building’s energy audits and GBI certifications.
Strategic KL Support: Based in Kuala Lumpur, we provide professional site audits for existing systems, identifying leakage "hotspots" and providing Class A retrofitting to reclaim your lost cooling capacity.
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