Air Exchange Unit by EKG (Malaysia) SDN BHD

In the 2026 landscape of EECA 2024 and ASHRAE 241, the Air Exchange Unit (AEU) serves as the mechanical "lungs" of a high-performance building. Unlike a standard ventilation fan, an AEU is a sophisticated, balanced air delivery system designed to manage building pressurization, dilute indoor pollutants, and act as the primary interface for Energy Recovery Ventilation (ERV) cores.

At EKG (Malaysia) SDN BHD, we engineer AEUs to maintain precise indoor air quality (IAQ) while minimizing the Building Energy Intensity (BEI) of your facility.

1. The Core Function: Balanced Air Renewal

The AEU is defined by its ability to perform "Total Air Renewal." In Malaysia’s tropical climate, this is critical to prevent the "Stale Air Syndrome" common in tightly sealed, energy-efficient buildings.

• Dual-Path Logic: The AEU houses two distinct paths—the Supply Air (SA) path from the outside and the Exhaust Air (EA) path from the indoors.

• The Dilution Principle: By 2026 standards, the AEU is sized for the Equivalent Clean Airflow Rate (ECAi), ensuring that indoor pollutants ($CO_2$, VOCs, and aerosols) are diluted effectively.

• Neutral Pressurization: An EKG-engineered AEU ensures that $CFM_{in} \approx CFM_{out}$. This prevents "uncontrolled infiltration" (hot, humid air leaking in) or "exfiltration" (cooled air leaking out), both of which drive up chiller loads.

2. High-Performance Design Specifications (2026)

To pass the statutory energy audits of 2026, a modern AEU must incorporate the following technical features:

3. Integration with the Energy Recovery Core

The AEU acts as the delivery vehicle for the Energy Recovery Unit (ERU).

• Zero-Contact Paths: In clinical or lab AEU designs, we ensure the supply and exhaust paths are physically isolated. When paired with a Run-Around Coil, the AEU provides 100% fresh air with zero risk of cross-contamination.

• Psychrometric Optimization: By 2026, EKG-designed AEUs are modeled to ensure the air velocity across the recovery core is perfectly laminar. This maximizes the Sensible and Latent Effectiveness, reclaiming up to 75% of the cooling energy from the exhaust air.

4. IAQ Monitoring & EnMS Connectivity

Under the 2026 regulations, "invisible" ventilation is no longer acceptable. Everything must be measured.

• Continuous IAQ Sensing: Our AEUs include integrated sensors for VOCs, $CO_2$, and PM2.5. If a spike is detected, the AEU automatically increases the air exchange rate to protect occupants.

• Statutory Data Logging: All airflow and energy data is fed directly to your Energy Management System (EnMS). This provides the auditable "Proof of Savings" required for the Energy Commission’s annual reporting.

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

• Technical Integrity: We provide the Static Pressure Calculations and SFP Performance Reports needed to justify ERV investments.

• Precision BIM Coordination: We model the complex "Four-Port" ducting required for AEUs to ensure they fit within limited high-rise mechanical voids.

• BOMBA-Compliant Safety: All internal materials and seals are non-shedding and fire-rated (Class 0 or B1).

Is your facility simply recirculating stale air, or is it "breathing" with a 2026-compliant Air Exchange Unit? Contact EKG (Malaysia) SDN BHD today to optimize your ventilation strategy.