Low-Leakage ERV Ductwork Sealing

Low-Leakage ERV Ductwork Sealing by EKG M&E Sdn Bhd

In the 2026 regulatory landscape of Kuala Lumpur and Selangor, air leakage in Energy Recovery Ventilation (ERV) systems is treated as both a financial and a health penalty. Under the Energy Efficiency and Conservation Act (EECA) 2024, air that escapes into a hot 33°C Malaysian ceiling void is "paid-for" cooling that never reaches the occupant, directly inflating your Building Energy Index (BEI). Furthermore, the DOSH ICOP IAQ 2026 update now mandates hermetic sealing to prevent the "aspiration" of contaminated plenum air into the fresh air supply.

EKG M&E Sdn Bhd utilizes a "Zero-Loss" sealing protocol, ensuring your ERV ductwork meets the highest international airtightness standards.

The 2026 Sealing Standard: ATC 6 (Class C)

As of 2026, standard "Class A" sealing is no longer sufficient for high-performance commercial buildings.

• Airtightness Class 6 (ATC 6): Following DW/144 and SMACNA guidelines, we target ATC 6 (equivalent to European Class C). This standard allows for less than 1% air leakage at typical operating pressures, ensuring that the pre-cooled, pre-dried air from your ERV enthalpy core is delivered exactly where it's needed.

• The EECA 2024 Mandate: Achieving this class is often a prerequisite for obtaining a 4-Star or 5-Star Energy Intensity Label from the Energy Commission (ST).

Our Hermetic Sealing Protocol

We treat every joint as a potential energy leak, utilizing a multi-layered approach to duct integrity.

1. Liquid-Applied Gaskets & Mastic Sealants

• Joint Integrity: We use high-velocity, fiber-reinforced mastic sealants on all transverse joints. Unlike traditional tapes that can degrade in the high humidity of the Klang Valley, liquid-applied gaskets create a permanent, flexible bond that withstands thermal expansion.

• Low-VOC Compliance: All sealants used are low-VOC and antimicrobial, satisfying the DOSH 2026 requirements for biological purity in the air path.

2. Transverse Duct Flanges (TDF/TDC)

• Precision Fit: For larger ERV risers, we utilize TDF or TDC flanging with specialized butyl rubber gaskets. This "metal-to-metal" mechanical lock ensures the highest level of structural rigidity and airtightness, preventing the "whistling" noises common in poorly sealed high-pressure systems.

3. Zero-Bypass Filter Framing

• Health Defense: An ERV is only as good as its filters. We seal the filter frames within the duct transitions using high-memory neoprene gaskets. This ensures that 100% of the air passes through the MERV-13/14 filters, with zero bypass of urban pollutants or PM2.5.

Validation: Duct Leakage Testing (DLT)

In 2026, "visual inspection" is not enough for compliance. EKG provides documented verification for every installation.

• Pressure Testing (DW/143): We conduct a physical pressure test on a subset of the ductwork (or the whole system for critical environments). By isolating a section and measuring the airflow required to maintain test pressure, we calculate the exact leakage rate.

   

• Ultrasonic Leak Detection: For retrofits in existing office buildings, we use ultrasonic sensors to pinpoint "silent leaks" in hard-to-reach ceiling voids, allowing for targeted repairs without major demolition.

Performance Matrix: Standard vs. Low-Leakage Sealing

Why Choose EKG M&E Sdn Bhd?

• 34 Years of Technical Depth: We understand the unique challenges of sealing ductwork in Malaysia’s extreme humidity.

• 3D BIM Coordination: We model every joint and flange in 3D to ensure there is physical space for proper manual sealing during installation, avoiding the "impossible reaches" that lead to leaks.

• Turnkey Documentation: We provide the Testing, Adjusting, and Balancing (TAB) and DLT reports required by your Registered Energy Manager (REM) for official ST submissions.

Is your ventilation system leaking your energy budget? Contact EKG M&E Sdn Bhd today for a professional ductwork sealing audit and secure the efficiency and air purity of your facility.