Axial and Centrifugal Fan Manufacturer: AC, DC and EC
OEM supply to HVAC manufacturers and system integrators in 25+ countries. Fan sizes from 20mm to 900mm across our axial and centrifugal ranges. Standard models ship in 15–20 days. Standard samples ready in 3–7 days.

Browse Our Product Range
Where Our Fans Work
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Axial Fan · AC / DC / EC

HVAC Systems
Large-diameter axial fans for fresh air intake, exhaust and recirculation in air handling units. AC external rotor fans from 200mm to 900mm, with DC and EC options in smaller frames.
View External Rotor Motor Fans → -
Axial Fan · AC / DC / EC

Data Centers & Server Rooms
Server racks and precision cooling units both need reliable airflow in tight spaces. Axial fans in AC, DC and EC are available across multiple frame sizes, from 20mm to 630mm, for server equipment and precision cooling systems.
View Axial Fans → -
Centrifugal Fan · AC / DC / EC

Clean Rooms & FFU
Centrifugal fans for fan filter units in semiconductor fabs, pharma and food processing clean rooms. EC speed control lets airflow be adjusted as filters load.
View Centrifugal Fans → -
Fan Filter · Plastic / Metal

Electrical Enclosures
Heat is a key consideration in electrical enclosure design. Fan filter units from 106.5mm to 323mm provide filtered airflow to help manage enclosure temperature. Plastic and metal housing options available.
View Fan Filters → -
Centrifugal Blower · DC

Medical & Lab Equipment
Compact DC centrifugal blowers for medical and lab OEM equipment. Frames from 97mm to 225mm.
View Centrifugal Blowers →
Switch to EC. Lower Energy Use at Part Load.
The speed controller is built into the motor housing. No external VFD, no extra panel space. Connect a 0–10V or PWM signal from your BMS (Modbus RS-485 on selected larger EC models) and the motor adjusts speed on its own. Frame sizes from 133mm to 560mm are available for common centrifugal fan applications. Confirm mounting dimensions when replacing an existing AC fan.
Estimate your own savings → EC Fan Energy Savings Calculator
What You Get From Proventofan
OEM Capability
Standard models start from 10 units; OEM custom builds and private-label orders start from 50 units. White-label packaging and NDA support are available for OEM projects. Sample first, then confirm production volumes. We supply HVAC manufacturers and system integrators across 25+ countries.
EC Technology
EC motors hold their efficiency across a wide speed range. The speed controller is built into the motor housing. 0–10V and PWM as standard, with Modbus RS-485 on selected larger EC models. No separate VFD required. Centrifugal range from 133mm to 560mm.
Fast Delivery
Standard samples ship within 3 to 7 days. We respond to inquiries within 1 business day. OEM custom samples take 5–10 days; volume orders run 15–20 days for standard models and 18–25 days for OEM builds.
Technical Support
Our engineers review your application before quoting. Fan selection, BMS wiring and static pressure matching are all covered. If your specification changes, we review the revision and reconfirm feasibility, lead time and cost before proceeding.
Spec It. We Build It.
Custom axial, centrifugal and EC fans to your voltage, frame size, IP rating and control interface. White-label packaging and NDA support are available for OEM projects. OEM custom builds start from 50 units.
Built in Our Own Factory
We own the factory. We wind our own motors, cast our own aluminum housings and own our impeller molds. Every unit goes through 100% QC before it ships.
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Watch the Factory Video →

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Production Line

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Components & Assembly

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Warehouse & Delivery

- Motor Winding, In-House
- Aluminum Housing Die-Casting, In-House
- Impeller Molds, Self-Owned
- 100% QC Before Shipment
Ready to Source Your Next Fan?
Send us your specs. Frame size, voltage, airflow and IP rating. We reply within 1 business day, and standard samples are ready in 3 to 7 days.
- Fan type and frame size — or the model of the fan you’re replacing
- Voltage and motor type (AC, DC or EC)
- Airflow requirement and static pressure
- Quantity
- IP rating and operating temperature
- Drawing or datasheet of the fan you’re replacing (if any)
Prefer email or WhatsApp?
Email: andy@proventofan.com · WhatsApp: +86 15057523756
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