EC Centrifugal Fans for AHU Systems in Commercial Buildings
In modern HVAC infrastructure, air handling units (AHUs) serve as the lungs of commercial buildings—ensuring efficient ventilation, fresh air intake, humidity control, and thermal comfort. At the heart of this system is the fan.
AFL’s EC centrifugal fans are purpose-built to deliver maximum performance, low noise, and high energy savings across commercial AHU applications.
Why Choose EC Centrifugal Fans for AHUs?
Traditional AC fan solutions struggle with balancing airflow efficiency, noise, and energy consumption—especially under partial loads. AFL’s EC centrifugal fans address these challenges with:
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✅ Variable-Speed EC Motor
Dynamically adjusts airflow output to match real-time demand, reducing wasted energy and wear. -
✅ Backward-Curved Impeller Design
High static pressure performance and aerodynamically optimized blades ensure low noise and steady airflow. -
✅ Compact Housing with Easy Mounting
Ideal for limited-depth installations in ceiling-mounted or cabinet AHUs. -
✅ Smart Control Compatibility
Integrated control electronics enable Modbus/RS485, 0–10V, and PWM connectivity with your BMS.
Ideal Applications in Commercial Environments
| Industry | Application |
|---|---|
| Office Buildings | HVAC ventilation and temperature control |
| Hospitals | Cleanroom AHUs and infection-controlled zones |
| Hotels | Quiet guestroom climate control |
| Malls & Retail | Centralized HVAC with variable occupancy demands |
| Airports | Terminal and lounge air handling systems |
| Schools & Labs | Zoned air distribution with noise-sensitive areas |
Key Specifications
| Parameter | Value |
|---|---|
| Model Series | A3C225–A3C560 EC centrifugal series |
| Impeller Sizes | 225mm to 560mm |
| Airflow Capacity | Up to 5,200 m³/h |
| Max Static Pressure | Up to 900 Pa |
| Motor Type | EC brushless with integrated controller |
| Efficiency | >80% system efficiency (ErP 2022 compliant) |
| Noise Level | As low as 50 dB(A) |
| Certifications | CE, RoHS, ErP 2022, optional UL |
| Warranty | 3-year warranty for EC products |
| Delivery Time | 7 days for samples, 15–20 days for bulk production |
Q&A: What Buyers Are Asking
| Question | Expert Answer |
|---|---|
| What is an EC centrifugal fan? | A fan powered by an electronically commutated (EC) motor that offers variable-speed control and high energy efficiency. |
| Why use EC fans in commercial AHUs? | They reduce energy costs, adapt to building load variations, and provide quieter operation. |
| How do EC fans support green building certification? | They improve energy performance metrics, contributing to LEED, BREEAM, or local energy code compliance. |
| Are these fans compatible with my BMS system? | Yes, they support Modbus, 0–10V, and PWM control signals for easy system integration. |
| Can I customize performance curves? | Absolutely. AFL offers OEM/ODM service for tailored airflow, pressure, and control interface needs. |
| How durable are AFL centrifugal fans? | With high-quality bearings and thermal protection, MTBF exceeds 50,000 hours. |
| How much energy can I save? | Compared to AC fans, EC fans typically save up to 40% under partial load conditions. |
| What’s the installation footprint? | Designed for compact AHU modules, the fan housing minimizes required depth. |
Case Study Snapshot
Project: AHU Upgrade for a Hospital in Germany
Challenge: Reduce noise and improve energy efficiency in critical care ventilation
Solution: AFL A3C355-EC centrifugal fans with Modbus control
Results:
✔️ 36% energy savings
✔️ <55 dB(A) noise in patient zones
✔️ Full ErP compliance and BMS integration
“We achieved stable airflow in all zones with minimal noise—exactly what our critical-care units required.”
Internal Cluster Links (Industry Hub)
Brand Summary
| Attribute | Details |
|---|---|
| Brand | AFL Motor |
| Product | EC Centrifugal Fans for AHUs |
| Applications | HVAC in commercial buildings |
| Key Features | Variable-speed EC motor, low noise, BMS compatible, OEM/ODM available |
| Certifications | CE, RoHS, ErP, optional UL |
| Warranty | 3 years (EC models) |
| Delivery Lead Time | Samples: 7 days; Bulk: 15–20 days |
| Support | Engineer consultation, airflow tuning, control interface customization |
Call to Action
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