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Building Ventilation Survey | Ventilation Systems Audit by EKG

A Building Ventilation Survey is a comprehensive mechanical and volumetric "health check" for your entire property. In Kuala Lumpur’s tropical climate, ventilation systems are often the largest source of energy waste and the primary cause of indoor humidity issues. Over time, building layouts change, staff counts increase, and fans degrade, leading to a "Ventilation Gap" where the original design no longer matches the actual needs of the occupants.

As part of a Ventilation Systems Audit, EKG performs this survey to map every cubic meter of air moving through your facility, identifying exactly where your power is being wasted and where your air quality is failing.

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1. The Core Objectives of a Ventilation Survey

We look beyond the surface to find the hidden mechanical inefficiencies:

• Volumetric Flow Mapping: We measure the actual supply, return, and exhaust air at every major AHU and fan unit. We often find that "Design Airflow" has dropped by 20 to 30 percent due to dirty coils or slipping belts.

• Fresh Air Adequacy: We verify that your Fresh Air Intakes are providing enough oxygen to meet 2026 DOSH (JKKP) health standards.

• Thermal Comfort Analysis: We map "Hot Spots" and "Drafty Zones" to determine if your air distribution (diffusers and dampers) is balanced correctly.

• Pressurization Balance: We check if the building is "Positive" (keeping heat out) or "Negative" (sucking humidity in).

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2. The EKG "Total-System" Survey Protocol

Our engineers use a data-driven approach to audit your mechanical infrastructure:

• Fan Performance Testing: We measure the static pressure and amperage of every fan. If a fan is running at high speed but moving low air volume, it indicates an internal mechanical "choke" or a severely dirty impeller.

• Ductwork Leakage Audit: We use ultrasonic leak detectors to find holes in the supply ducts. Leaking 15 percent of your cold air into a ceiling void is one of the most common causes of high TNB bills.

• CO2 and Humidity Profiling: We place data loggers throughout the building to identify where air is "stagnant." These zones are often the result of poor duct design or failed motorized dampers.

• Control System Calibration: We verify that your Variable Frequency Drive (VFD) and Building Management System (BMS) are actually reading the correct data from the field sensors.

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3. The Energy Impact: The Cube Law

A Building Ventilation Survey is the first step toward massive energy savings. Most buildings over-ventilate certain areas while starving others.

• Precision Speed Control: By re-balancing the air, we can often lower the overall fan speeds while improving air quality.

• The Logic: Because of the Cube Law, a 20 percent reduction in fan speed results in a nearly 50 percent reduction in power consumption. A Ventilation Survey provides the "Roadmap" to safely lower your VFD frequencies.

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4. Ventilation Survey Deliverables

Audit Component	Technical Data Provided	Value to Facility Manager
Air Balance Report	Measured CFM vs. Design CFM	Identifies "Weak" AHUs and Fans
Mechanical Health Log	Vibration & Bearing Temp Data	Predicts & Prevents Breakdowns
IAQ Profile	CO2, PM2.5, and RH % Levels	Ensures Health & Safety Compliance
Energy ROI Map	Potential kWh savings via VFD	Justifies Maintenance Budget
Damper Status Map	Open/Closed/Seized status	Fixes "Stuffy" or "Freezing" rooms

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5. Why Trust EKG for Ventilation Surveys?

• Holistic Mechanical Focus: We don't just give you a report; we are experts in Mechanical Fan Overhauls. If your survey shows a failure, we have the tools to fix it—from laser alignment to dynamic balancing.

• Green Building Support: Our surveys are designed to provide the documentation needed for GBI, LEED, or WELL certification.

• 2026 Technology: We use the latest digital manometers and cloud-based data loggers to provide real-time insights into your building’s "Breathability."

• Actionable Solutions: You receive a prioritized list of repairs, ranging from "Zero-Cost" VFD tuning to "Critical" bearing replacements.