EC Centrifugal Fan Manufacturers

EC Centrifugal Fan manufacturer and engineering partner

As an EC Centrifugal Fan manufacturer, Hangzhou Beron Motor Co., Ltd. integrates AC mains input, a brushless DC motor and drive electronics into one compact fan assembly. We design and build the complete unit — impeller, external rotor motor and speed control — so the fan reaches the customer as a single tested component rather than as a collection of separately sourced parts.

Beron Motor has 16 years of fan and micro-motor experience, with production and R&D bases in Hangzhou and Huzhou, a 6,000 m² factory area and an annual output of 60,000 units. Our EC centrifugal fans are used in HVAC equipment, refrigeration and heat pumps, clean air and FFU systems, power electronics, IT communications and new energy storage, and are exported to global OEM and distributor customers.

For project teams, the value of the EC platform is straightforward: variable speed without a separate frequency converter, reduced power consumption and heat generation, network communication when required, and mounting geometry that often allows a direct AC fan replacement. New product development and retrofit projects follow the same path at Beron Motor — we confirm the operating point and control interface first, then fit the fan into the available envelope.

How we build EC centrifugal fans

The mechanical and electrical design is decided together because an EC fan is a motor-drive-fan system, not a motor added to an impeller. This influences the impeller profile, motor length, electronic drive layout and the mounting envelope we can offer.

• Integrated EC drive: AC input is converted and controlled by the integrated electronics, which commutate the brushless motor and regulate speed. This is the basis of the energy saving and controllability of the range.
• External rotor construction: the motor rotor is integrated into the impeller hub, which shortens the axial length and suits equipment enclosures with limited depth.
• Backward curved impeller options: stable pressure characteristics over a useful airflow range, well suited to ducted systems, intake filters and heat exchanger coils that create system resistance.
• Flat replacement geometry: selected models use standard mounting dimensions so an existing AC centrifugal fan can be replaced without redesigning the plenum or intake housing.

EC centrifugal fan range and application fit

Our current EC centrifugal fan line is organized around six recurring platforms. Each addresses a different priority, from energy retrofit to clean-air static pressure to compact variable speed.

The same scroll and impeller family is also manufactured with AC and DC drive technology in our AC Centrifugal Fan and DC Centrifugal Fan lines. For the full mechanical range, start with Centrifugal Fan.

Critical specifications and selection inputs

Before proposing a model, we translate the application into a duty point. The fan curve, motor power and drive settings are then selected against that point.

• Required airflow at the operating point (m³/h or CFM)
• Total static or external static pressure at that airflow
• Air density, temperature and altitude at the installation site
• Ambient temperature and enclosure heat load
• AC supply voltage, frequency and available power
• Speed reference type: fixed speed, analog command or Modbus RTU
• Mounting dimensions, inlet and outlet orientation, and available space
• Noise limit, IP protection and target market certification

Because a centrifugal fan’s power changes with air density and speed, we calculate the duty point at the actual installation altitude rather than using standard air density. This matters for heat pumps in cold regions and electronic cooling in high-temperature cabinets. For retrofit projects, the existing fan’s mounting holes, impeller diameter and terminal arrangement are the most direct starting point.

With this input we provide a fan selection, dimensional drawing, motor-drive configuration and proposal.

Controls, networking and automation integration

EC centrifugal fans are usually specified because the equipment maker wants to adjust airflow in response to temperature, pressure or demand. Our integrated EC drive supports project-defined speed reference wiring, and optional Modbus RTU communication provides centralized system management and fault diagnosis.

The EC drive controls motor speed without the slip of an AC induction motor, giving a more stable speed-to-airflow relationship under load. In multi-fan equipment this improves balanced output across production units. We define the wiring interface, communication addresses and startup behavior in the customer documentation so the fan can be connected directly to the HVAC controller, PLC or building management system.

Quality assurance and factory acceptance

Beron Motor is a National High-tech Enterprise and a Zhejiang Innovative SME. We test the EC centrifugal fan as a working assembly, not only as a motor, using wind tunnel laboratories, noise laboratories, comprehensive motor performance laboratories and aging laboratories at our Hangzhou and Huzhou centers.

• ISO9001:2015 quality management system across production
• CCC and CE certification for the fan products; RoHS and UL test compliance
• IP55 rating tests on selected enclosures
• In-process inspection and pre-shipment checks covering appearance, nameplates, assembly, accessories and packaging
• Factory acceptance tests and third-party inspection support when a project requires it

Our engineering team can also coordinate documentation aligned with regional standards such as GOST, IEC and CE, depending on the destination market and the customer specification.

Configuration, customization and OEM/ODM support

Customization is part of our normal workflow. We supply non-standard voltage, changed power ratings, special duty requirements and mechanical adaptations. Inlet rings, flanges and mounting brackets are included in the configuration when the enclosure design requires them. OEM and ODM projects can include custom drawings, nameplates, connectors, lead lengths and packaging.

For new designs, our team evaluates the customer’s drawings or samples, confirms technical feasibility and then releases a solution drawing and quotation. Standard samples are available within 3-5 days, and regular production typically takes 25-30 days after confirmation. Standard product MOQ is typically 100 pieces; custom product MOQ depends on the process.

Installation, logistics and after-sales support

Each shipment includes the technical documentation needed for installation and commissioning: wiring diagrams, fan curves, dimensional drawings and installation instructions. We provide online installation guidance and can arrange on-site technical support for large orders. Our products carry a 12-month warranty against material and manufacturing defects, and we support spare parts, root-cause analysis and follow-up improvements after delivery.

The brushless motor has no carbon brushes to replace, which simplifies maintenance in continuous-duty applications. For international projects, we organize professional packaging, logistics and customs coordination, and quotations can be prepared on FOB, DAP or DDP terms.

With these details, Beron Motor will prepare a proposal that includes the fan curve, drawing, certification evidence and a confirmed production schedule.

FAQs

Can I use an EC centrifugal fan as a drop-in replacement for an AC fan?

Many of our EC centrifugal fans are designed with standard installation dimensions for flat replacement of AC fans. Send the existing fan’s mounting hole pattern, impeller diameter, outlet orientation and voltage; we will verify the mechanical interface and select the closest EC variant.

Which control interfaces are available on your EC centrifugal fans?

We configure the EC drive to the control method used by your equipment. The fans support project-defined speed reference wiring, and optional Modbus RTU communication enables centralized management and fault diagnosis.

What energy savings can be expected compared with a traditional AC fan?

Beron Motor quotes energy savings of more than 70% versus comparable traditional AC fan operation. The EC drive also reduces heat generation and provides variable-speed control, which supports partial-load efficiency in HVAC and heat pump applications.

Can Beron Motor manufacture a custom EC centrifugal fan for our product?

Yes. We provide OEM and ODM services for EC centrifugal fans. Provide drawings, samples or detailed specifications, and our engineering team will evaluate the changes, confirm feasibility and provide a solution drawing and quotation.

What certifications and inspection support do you offer?

Our factory is managed under ISO9001:2015. The EC centrifugal fans carry CCC and CE certification, have passed RoHS and UL tests, and have completed IP55 rating tests. We can also coordinate factory acceptance and third-party inspection before shipment.