Data Centre Temperature Control by EKG M&E Sdn Bhd
In the tropical climate of Kuala Lumpur, temperature control is the single most critical factor for data centre uptime. While legacy facilities often over-cooled their rooms to a "meat locker" 18°C, modern 2026 standards from ASHRAE TC 9.9 and JKKP (DOSH) emphasize a wider, more energy-efficient "Thermal Envelope."
EKG M&E Sdn Bhd specializes in precision thermal management that balances hardware longevity with aggressive PUE (Power Usage Effectiveness) goals.
1. The 2026 Thermal Standards (ASHRAE TC 9.9)
We design systems to adhere to the latest international and local Malaysian guidelines, moving away from room-level cooling toward Inlet-Air Management:
| Metric | Recommended (Class A1) | Allowable (Class A1) |
| Server Inlet Temp | 18°C – 27°C | 15°C – 32°C |
| Relative Humidity | 8% to 60% RH | 8% to 80% RH |
| Dew Point | -9°C to 15°C | Max 17°C DP |
| Max Rate of Change | 5°C per 20 mins | To prevent thermal shock |
Pro Tip: For high-density AI/GPU clusters (Class H1), ASHRAE now recommends a tighter band of 18°C to 22°C due to the extreme heat generated at the chip level.
2. Strategic Airflow: Eliminating "Hot Spots"
In KL, simply lowering the AC temperature won't fix a "Hot Spot" if the airflow is blocked. As an HVAC Specialist, we implement:
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Cold Aisle Containment (CAC): We enclose the supply aisle to create a pressurized reservoir of cold air. This ensures that even the servers at the very top of the rack receive air at 22°C, rather than sucking in hot exhaust from the room.
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Hot Aisle Containment (HAC): We capture the 35°C+ exhaust and duct it directly back to the cooling units. This allows the CRAC/CRAH to operate at higher return-air temperatures, which significantly increases their cooling capacity and efficiency.
3. VFD and "Smart" Temperature Logic
Fixed-speed cooling is obsolete. We utilize Variable Frequency Drives (VFDs) to create a "demand-based" temperature loop:
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Pressure-Linked Speed: The VFDs on your blowers adjust in real-time based on underfloor pressure. If a server ramps up and pulls more air, the VFD instantly increases the fan RPM to maintain the set temperature.
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The "One Degree" Rule: By using VFDs and containment to safely raise the room temperature by just 1°C, we can reduce your chiller energy consumption by 2% to 3%—a massive saving on your monthly TNB bill in Malaysia.
4. Monitoring and Fail-Safe Redundancy
In a 2026 data centre, a 15-minute loss of temperature control can lead to a facility-wide crash. Our maintenance includes:
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Thermal Mapping: We place NIST-traceable sensors at the bottom, middle, and top of the racks to provide a real-time "heat map" of your facility.
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Vibration Health Analysis: We perform FFT Spectrum Analysis on cooling unit fans and pumps. We detect bearing wear early, ensuring your "N+1" redundancy is actually ready to take over during a failure.
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JKKP (DOSH) Compliance: We ensure your facility meets the Indoor Air Quality (IAQ) standards required for staff working in these environments, balancing technical cooling with human occupational safety.
Why Choose EKG M&E Sdn Bhd?
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Turnkey MEP Capability: We manage the entire loop—from the Raised Access Floors and BMS Software to the Fire Suppression (Novec 1230) interlocks.
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34-Year Legacy in KL: We have designed and maintained stable thermal environments for some of Malaysia's largest banks, telcos, and government agencies.
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Sustainability Driven: We focus on optimizing your PUE and WUE (Water Usage Effectiveness) to meet the 2026 ESG mandates.
