• High-Efficiency Fan Filter Unit (FFU) for Cleanroom

    Energy-saving EC motor technology with customized dimensions to meet ISO/GMP cleanroom standards.
    ● Low Energy Consumption
    ● Customized Dimensions
    ● Smart Control
    ● Compatible with centralized BMS/PLC systems.

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Fan Filter Unit (FFU)

Fan Filter Unit (FFU) is a self-contained air filtration device that includes a motorized fan, a HEPA or ULPA filter, all integrated into a single lightweight housing.

  • Advanced EC /AC motor  ensures stable laminar flow ，reducing HVAC loads and energy costs.
  • Tailored dimensions, HEPA/ULPA, and BMS integration (Modbus/BACnet) to fit for any new project or retrofit.

  • 100% factory testing (PAO/Airflow), compliance with GMP standards.

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Why cleanroom Contractors &designers Choose Flair FFU?

Flair Fan Filter Units are engineered to deliver consistent, contamination-free airflow for critical cleanroom environments. Designed for reliability, efficiency, and compliance, our FFUs support a wide range of cleanroom applications across pharmaceutical, electronics, medical, and biotechnology industries.

  • Engergy-saving

    Optimized fan and motor design for reduced power consumption and operating costs.

  • Compliance & Quality Assurance

    Each unit is tested to ensure performance, safety, and reliability

  • Custom Designs

    Flexible sizing, airflow options, and mounting configurations to match project needs.

  • Easy to install

    FFUs are easy to install and update, require no retrofitting. They easily sit above workbenches, as they are easy to move.

  • Safe to maintenance

    Safety switch FFU for unit maintenance/servicing and the speed control to allow for airflow tuning.

  • Durable Construction

    Built with high-quality materials for long service life and easy maintenance

Top Features of High-Quality Flair FFU

Blower

AC centrifugal fan or EC EBM motor, according to  IEEE specification and requirements, low noise

Controller

3-step/9-step speed controller / stepless speed /control panel, easy to control

HEPA / ULPA Filter

High-efficiency particulate air (HEPA) filters meet the national and industrial standard

SUS handle

Stainless steel handle,and as long as 1.8m cable.

Strictly quality control

Inspected by third-party lab or research institute, quality guaranteed

Certification

Based on the ISO 14644–14 guidance, equipments are designed for cleanrooms

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Choose the Right FFU for Your Cleanroom Application

standard fan filter unit

Standard Fan Filter Unit

Reliable performance, energy-efficient EC motor, ideal for general cleanroom applications.

SUS FFU

Corrosion-resistant SUS304 construction, tailored for pharmaceutical and biotech labs.

Ducted ceiling Module filter

Flexible duct connection, optimized for direct integration with AHU airflow systems.

RSR FFU

High-integrity liquid seal design, ensuring superior leak-proof performance for critical zones.
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FFU centralized controller systems are available

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All FFUs can be monitored and controlled from a centralized control panel or PC, enabling easy management of airflow, speed, and operating status across the cleanroom.

  • Centralized monitoring & control with touch screen or PC

  • FFU grouping & zoning

  • Individual & group speed control

  • Real-time status & alarms

  • Energy-efficient airflow management

  • Scalable & BMS-compatible system

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Custom FFU Manufacturer& Supplier for Cleanroom Contractors& Designers

Flair ‘s Tailored  FFU service for cleanroom Contractors ,designers and Retrofit & Maintenance :

  • Dimensions: Custom sizes to fit existing or unique ceiling grids.

  • Material Choice: Aluminum-zinc plate,SUS 201/304, Galvanized Steel, or Aluminum with powder coating.

  • Motor Technology: High-efficiency EC motors (EBM-papst/Ziehl-Abegg) or  AC motors.

  • Control Systems: Standalone, control panel,stepless speed controller,Group Control with touch screen, or full BMS integration (Modbus/BACnet).

  • Filtration Grade: HEPA (H13/H14) or ULPA (U15/U16/U17) options.

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FFU 3D drawing

Flair FFU（Fan Filter Unit）Applications

Our FFUs deliver HEPA/ULPA filtration for cleanrooms, pharmaceutical labs, medical facilities, and electronics manufacturing. Ideal for ISO-class clean zones, GMP-compliant production, and modular clean booths, they provide consistent airflow, low noise operation, and effective particulate control for sensitive processes,and meet ISO and GMP standards.

clean booth

FAQs

Start Your Cleanroom Project with Confidence，Talk to our experts and get the right FFU solution for your application soon.

Step 1 Preparation

  • Tools: double ladder, scaffold
  • Workers: at least 6 persons, two persons on the ceiling, two stands on the scaffold, the other two transfer FFU
  • Tips: all workers should pay attention to  their safety, especially the persons on the ceiling

Step 2 Install FFU

  • The Workers ①&② take the FFU from the carton, and deliver it to workers ③&④
  • Then workers ①&② fetch HEPA filters
  • The workers ③&④ convey FFU casing to workers ⑤&⑥ on the ceiling sideways

Step 3  Assembly FFU

  • Workers ⑤&⑥ lift the FFU casing simultaneously
  • Workers ①&② convey the HEPA filter to workers ③&④, and repeat until all FFU finish installation；
  • Workers ③&④ pave the HEPA filter on the T-grid ceiling on the level

Step4 Assembly FFU casing

  • Workers ⑤&⑥ place FFU casing on the HEPA filter；
  • Workers ③&④ move the supports platform to install another FFU, repeat steps 1-4

Step1  Take down the old HEPA filter

  • Workers ⑤&⑥ on the ceiling stand on FFU casing, Lift the FFUcasing
  • Workers ③&④ take down the old HEPA filter and deliver it to workers ①&② on the ground
  • Workers ①&② carry the old HEPA filters to pointed place and take the new HEPA filters back

Step 2 Replace HEPA Filter

  • Workers ③&④ catch the new HEPA filter from Workers ①&②, and place it to the T-Grid on level
  • The workers⑤&⑥ place the FFU casing on the new HEPA filter

Step 3 Inspect

  • Workers ⑤&⑥ check and inspect FFU

1.FFU Construction

FFU often consists of a pre-filter, a HEPA/ ULPA filter and the motorized fan, It pulls air through the filters for distribution to cleanrooms or enclosed work stations such as hoods,Which can be installed in the grid  ceiling grid.

FFUs are typically installed in two main configurations, the first is that the FFU draws air from a common plenum. One major advantage of a common plenum FFU system converts the ceiling plenum into a negative pressure space, thereby eliminating the risk of contaminants migrating from the ceiling plenum into the clean space below. Another is The negative pressure is created as the FFU draws surrounding air from the common returns as well as fresh outside air from an AHU.

2.FFU working process in cleanroom

The FFU can be directly ducted from an AHU or terminal device.

They are widely used in pharmaceuticals, biotechnology, medical facilities, electronics, semiconductor manufacturing, food, and cosmetics production, supporting sterile processes, contamination control, and regulatory compliance. Modular and energy-efficient, FFUs allow flexible cleanroom layouts and targeted airflow, protecting sensitive products and equipment.

Yes. Many units include speed controllers or digital interfaces that allow users to adjust airflow based on cleanroom requirements.

  • If the project is cost-sensitive and simple, AC is sufficient.
    For long-term operation or energy-saving targets, EC is the better option.

Yes. High-quality FFUs are engineered to minimize noise, usually operating at 50–60 dB depending on airflow speed and design.

The number depends on:

  • Required ISO class level

  • Room size

  • Air changes per hour (ACH)

  • Ceiling coverage ratio

  • Cleanroom designers typically calculate these parameters during planning.

Yes,Of course .you can consult our technician freely .

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