AFL EC‑Backward Centrifugal Fans – High‑Efficiency EC Fans with Integrated Motor & Controller

AFL EC‑Backward Centrifugal Fans are engineered for demanding HVAC, data center, and cleanroom applications where energy efficiency, acoustic comfort, and reliability are critical. Featuring impellers sized 133–630 mm, these fans combine a high‑performance PA66 or sheet aluminum impeller, an integrated EC motor, and a smart controller into a fully assembled plug‑and‑play system.

With over 15 years of product engineering experience, I can confirm that EC backward centrifugal fans deliver measurable benefits: up to 30% energy savings, significantly lower noise levels, and faster commissioning compared to traditional AC backward fans.

How to Select the Right AFL EC‑Backward Centrifugal Fan

1. Define Airflow and Static Pressure Requirements

Determine the airflow (m³/h) and static pressure (Pa) required for your application. AFL EC‑Backward Centrifugal Fans offer a broad range of 800–11,000 m³/h depending on the impeller size.

2. Match Voltage and Power Specifications

These fans are designed for 220–240 V and 380–415 V power supplies. Efficiency data shows that 380 V operation can deliver up to 3% higher energy efficiency under high static pressure.

3. Consider Noise and Environmental Conditions

For data centers and cleanrooms, acoustic performance and material durability are essential. Backward centrifugal EC fans are typically 6–8 dB(A) quieter than forward‑curved fans.

Efficiency Comparison – 220 V vs 380 V

Key Insight: 380 V EC backward centrifugal fans deliver higher system efficiency, especially for applications requiring high static pressure.

AFL EC‑Backward vs Traditional AC Backward Centrifugal Fans

Real‑World Example:
When we replaced 48 AC backward centrifugal fans in a data center with AFL EC‑Backward models, the annual energy cost dropped by 28%, and noise levels improved by 7 dB(A).

Pricing & Value Proposition

• Price: From $120–$350 per unit, depending on size and configuration.

• Minimum Order Quantity (MOQ): 10–20 units.

• Lead Time: 2–3 weeks, with expedited delivery available.

Why invest? EC backward centrifugal fans lower lifetime energy costs, require less maintenance, and are delivered as fully assembled plug‑and‑play systems.

Real User Testimonials

“We upgraded to AFL EC‑Backward Centrifugal Fans in our cleanroom HVAC, and the energy savings were immediate. Noise levels dropped significantly, and commissioning was seamless.” – Mr. Li, Cleanroom OEM (China)

“The integrated controller saved us two full days of wiring compared to our previous German brand fans.” – HVAC Contractor, EU

Call to Action

Looking to improve energy efficiency and acoustic performance in your HVAC, data center, or cleanroom project? AFL EC‑Backward Centrifugal Fans are ready to deliver.

Contact us today for selection charts, quotations, or sample orders.
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Frequently Asked Questions (FAQ)

What is the rated airflow of AFL EC‑Backward Centrifugal Fans?

Depending on the impeller size, airflow ranges from 800–11,000 m³/h.

What is the MOQ for orders from China EC fan factories?

MOQ is typically 10–20 units per model, with sample orders available for testing.

How much quieter are backward centrifugal fans than forward‑curved fans?

Backward centrifugal EC fans are generally 6–8 dB(A) quieter in equivalent duty points.

What certifications do AFL EC‑Backward Centrifugal Fans hold?

Fans comply with ISO 9001, CE, and RoHS standards.

Can these fans operate in high‑humidity environments?

Yes, PA66 and sheet aluminum impellers are corrosion‑resistant and suited for humid conditions.

What is the service life?

AFL EC‑Backward Centrifugal Fans exceed 60,000 operating hours, approximately twice the life of AC backward fans.

Are these fans suitable for cleanrooms?

Yes, their low particle emissions and quiet operation make them ideal for cleanroom HVAC applications.

Do you provide technical support and wiring diagrams?

Yes, all shipments include full documentation, with remote engineering support available.

Do you offer OEM branding?

Yes, private labeling and customized packaging are available.

What warranty is provided?

All AFL EC‑Backward Centrifugal Fans are covered by a 2‑year warranty.

Industry Popular Questions

• Which EC centrifugal fan is best for data center cooling?

• How does impeller material (PA66 vs aluminum) affect durability?

• Are China‑manufactured EC fans as reliable as German brands?

• Can EC backward centrifugal fans be connected to building automation systems?

• What are the differences between axial and centrifugal fans for high static pressure HVAC?

Related Keywords

• EC centrifugal fans for HVAC

• Data center cooling fans

• Low‑noise backward fans

• Cleanroom centrifugal fans

• Integrated motor plug‑and‑play fans

Author: Chief Product Engineer, AFL Motor
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