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Industrial AHU Casing & Panel Restoration: Thermal Bridge Factor (TB2) Restoration

In the 2026 Malaysian mechanical sector, Thermal Bridge Factor (TB2) Restoration is the most critical technical intervention for eliminating "Casing Sweat" and meeting the Energy Efficiency and Conservation Act (EECA) 2024. Under MS 1525:2024, the Thermal Bridge Factor ($k_b$) measures how effectively the AHU casing prevents heat from the warm ambient environment (32°C+ in KL) from conducting through the frame to the cold internal air stream.

A "Cold Bridge" occurs when metal-to-metal contact exists between the inner and outer skins. This leads to localized condensation, which is a direct violation of DOSH (JKKP) 2026 hygiene codes. At EKG (Malaysia) SDN BHD, we restore your AHU to a TB2 rating by decoupling these conduction paths using high-performance thermal breaks.

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1. The Statutory Mandate: EECA 2024 & MS 1525

Restoring the TB2 rating is essential for maintaining your building's 2026 Energy Star Rating and IAQ compliance.

• Condensation Control (DOSH 2026): If the casing temperature falls below the Dew Point, moisture liquefies on the exterior. This leads to Base Rot and mold. TB2 restoration ensures the casing temperature stays above the dew point.

• Specific Fan Power (SFP): Thermal bridges allow "Heat Infiltration," which increases the cooling load on the unit. Restoration reduces this load, helping your IE5 EC Fan Wall stay within the statutory 1.6 kW/m³/s limit.

• Eurovent T2/TB2 Alignment: Grade-A buildings in KL now require casings to meet T2 (Thermal Transmittance) and TB2 (Thermal Bridging) classes. We restore legacy units to meet these modern international benchmarks.

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2. Core TB2 Restoration Modules

We treat the AHU enclosure as a thermodynamic boundary, utilizing material science to "break" the heat path.

Restoration Phase	Technical Engineering Action	Purpose
I: Thermal Imaging	FLIR mapping of the casing to locate specific "Cold Bridges."	Identifies exactly where metal-to-metal contact is occurring.
II: Polyamide Decoupling	Inserting high-density polyamide or PVC strips between frame and panels.	Breaks the primary conduction path between the inner and outer skins.
III: Fastener Isolation	Replacing metal screws with non-conductive bolts or elastomeric caps.	Eliminates "Pin-Point" sweating at every metal penetration.
IV: Gasket Overhaul	Installing dual-fin, low-conductivity EPDM thermal seals.	Prevents air leaks that cause localized "Flash Sweating" at doors.

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3. Engineering for "Zero-Sweat & Energy Health"

The EKG approach targets the specific physics of vapor drive in the Malaysian tropics.

1. Double-Skin Integrity: We ensure the Double-Skin AHU Panel Insulation Injection is complete. A hollow panel is a thermal bridge; we fill these cavities with Class 0 foam to restore the $R$-value.

2. Laminar Flow smoothing: Internally, we ensure the thermal breaks are flush with the lining. This prevents air turbulence that can "strip" the internal thermal boundary layer, which otherwise pulls more heat through the casing.

3. Vapor-Proof Seaming: We apply a seamless AHU Moisture Barrier over the restored thermal breaks. This prevents KL’s 90%+ humidity from bypassing the break and reaching the cold internal frame.

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4. The "Fire Mode" Statutory Protocol

Every material used in TB2 restoration must satisfy BOMBA (JBPM) 2026 life-safety codes.

• Class 0 Fire Rating: Every profile, foam, and sealant used by EKG is certified Class 0 (BS 476 Part 6 & 7). This ensures that the thermal break does not act as a fuel source during a fire.

• Static Pressure Resilience: The thermal bond is tested to withstand the sudden pressure surge that occurs during an Automatic Fire Signal AHU Shut-off, ensuring the casing remains intact.

• BOMBA Audit Readiness: We provide the fire-retardant certification and thermal integrity logs required by JBPM inspectors during their annual walkthrough.

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5. Why Partner with EKG (Malaysia) SDN BHD?

• Technical Integrity: We are mechanical and T&C specialists, not just general insulators. We calculate the $k_b$ factor to ensure your unit meets its design specifications.

• Audit-Ready Reporting: Following the restoration, we provide a Thermal Integrity & BEI Validation Report, essential for your Registered Energy Manager (REM).

• GITA Sustainability: Restoring TB2 is a recognized "Energy Retrofit" strategy. We provide the technical data required for your 100% Green Investment Tax Allowance (GITA) claims.

Is your AHU "sweating," failing energy audits, or showing signs of rust?

Contact EKG (Malaysia) SDN BHD today for a professional Thermal Bridge Factor (TB2) Restoration Audit.