In the 2026 Malaysian mechanical sector, the "No Belt" AC Fan refers to the industry-wide transition to Direct-Drive technology, typically utilizing IE5-rated Electronically Commutated (EC) motors.
Under the Energy Efficiency and Conservation Act (EECA) 2024, legacy belt-driven fans are now considered energy and maintenance liabilities. Removing the belt system is the most effective way to lower your Building Energy Intensity (BEI) and satisfy a statutory Registered Energy Manager (REM) audit.
A "No Belt" or Direct-Drive fan has the impeller (blades) mounted directly onto the motor shaft. This architectural shift solves three major mechanical issues inherent in legacy AHUs:
Zero Transmission Loss: Belts and pulleys typically lose 2–5% of energy through friction and slippage. Direct-drive fans operate at near 100% transmission efficiency, ensuring every watt of electricity is used to move air.
Sterile Airflow (DOSH 2026): Belts shed "black dust" (rubber particulate matter) as they wear. This dust fouls cooling coils and contaminates indoor air. A beltless system is sterile, making it essential for meeting the <1000 CFU/m³ microbial limits in modern health audits.
Maintenance Elimination: Monthly belt tensioning and annual belt replacements are eliminated. Modern IE5 motors use sealed-for-life bearings, drastically reducing the O&M (Operation & Maintenance) budget.
To pass a 2026 energy audit in Malaysia, AHU fans must meet specific Specific Fan Power (SFP) targets. Belt-driven fans rarely hit these targets consistently.
| Performance Metric | Legacy Belt-Drive Fan | Modern No-Belt EC Fan |
| SFP Performance | 1.4 – 1.8 kW/m³/s | 0.6 – 1.0 kW/m³/s |
| Motor Standard | IE1 / IE2 | IE5 Ultra-Premium |
| Efficiency Profile | Drops at partial speeds | High efficiency at all speeds |
| Control Logic | External VFD required | Integrated Digital Controls |
At EKG (Malaysia) SDN BHD, we utilize two primary "No Belt" configurations for AHU modernizations:
EC Plug Fans: These "free-wheeling" impellers are ideal for compact AHU boxes. They are easy to install and offer high static pressure capabilities.
FanWall (Array) Technology: We replace one large legacy blower with a modular matrix of smaller direct-drive fans. This provides N+1 redundancy; if one fan fails, the others ramp up, ensuring zero downtime for your facility.
100% GITA Sustainability: Upgrading to high-efficiency, beltless technology is a recognized "Green" intervention. This qualifies for the 100% Green Investment Tax Allowance (GITA), allowing you to offset the project cost against your statutory tax liability.
Penalty Protection: Achieving a lower SFP protects building owners from statutory fines (up to RM100,000) associated with non-compliance with the EECA 2024.
Acoustic Optimization: Beltless fans operate at higher frequencies that are easier to dampen using Fiber-Free Closed-Cell Insulation, helping your mechanical room achieve NC 35 standards.
Is your facility currently running on legacy belt-driven technology, or are you ready to transition to a high-performance 2026 "No Belt" platform?
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