In the urban and industrial hubs of KL and Selangor, achieving the correct Air Change Rate (ACR) is the foundation of both occupant health and regulatory compliance. ACR is the measure of how many times the total volume of air in a space is replaced with fresh or filtered air within one hour. EKG M&E Sdn Bhd specializes in auditing, balancing, and engineering ventilation systems to meet DOSH (JKKP), Ministry of Health (MOH), and ASHRAE standards.
Different environments in Malaysia require specific ACR levels to manage pollutants, heat, or infectious particles.
For standard offices in the Klang Valley, the goal is CO2 reduction and odor control.
ASHRAE 62.1 Compliance: We ensure a minimum fresh air intake to prevent "Sick Building Syndrome," which often manifests as lethargy or headaches among staff.
Positive Pressure Maintenance: We balance the ACR so that the office remains at a slightly higher pressure than the corridor, preventing dust and humidity ingress.
Factories dealing with heat-generating machinery or chemical vapors require aggressive flushing.
Heat Load Mitigation: In non-AC warehouses, we utilize high-volume Roof Extractors to achieve the necessary ACR to keep the "Heat Index" safe for workers.
Local Exhaust Ventilation (LEV): For specialized processes, we design "source-capture" systems that exceed general ACR to meet DOSH (JKKP) chemical exposure limits.
In clinics and laboratories, ACR is a tool for infection control.
HEPA Filtration Integration: We pair high ACR with HEPA-filtered supply air to maintain "ISO Class" cleanliness.
Negative Pressure Isolation: For medical zones, we engineer the exhaust to be higher than the supply, ensuring air (and pathogens) cannot leak out to public areas.
As an HVAC & Clean Air Specialist, we use precise M&E formulas to validate your building's performance:
Where:
Q = Volumetric flow rate of air (in m^3/min or CFM)
V = Total volume of the space (in m^3 or ft^3)
Duct Traverse Testing: Using calibrated digital anemometers, we measure the actual velocity inside the main ducts to calculate Q
VFD Optimization: We program Variable Frequency Drives (VFDs) to adjust the fan speed. This allows you to maintain high ACR during peak occupancy and "Setback" the ACR during off-hours to save energy.
| Space Type | Target ACR (ACH) | Primary Regulatory Standard |
| Corporate Office | 4 – 6 | ASHRAE 62.1 / UBBL |
| Commercial Kitchen | 15 – 30 | Mechanical Exhaust (BOMBA) |
| Basement Car Park | 6 (General) / 10 (Smoke) | UBBL / BOMBA |
| Manufacturing Plant | 10 – 20 | DOSH (JKKP) Guidelines |
| Server Room | 8 – 15 | ASHRAE (Thermal Management) |
Airflow Balancing (TAB): We provide professional Testing, Adjusting, and Balancing (TAB). If one room is "stuffing" while another is a "wind tunnel," we recalibrate the dampers to ensure uniform ACR across your entire KL facility.
Energy-Efficient Fresh Air: We utilize Energy Recovery Ventilators (ERV) to ensure that increasing your ACR doesn't lead to an explosion in your TNB electricity bill.
Klang Valley Strategic Support: Based in Kuala Lumpur, we provide on-site airflow audits, IAQ testing, and system retrofits for commercial and industrial clients.
Malaysia
