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H14 FFU Filter Unit Fan

HEPA Fan Filter Units (FFUs) are important components installed in ceiling areas of cleanrooms and other controlled environments. They are designed to remove particles and contaminants from the air, ensuring air quality meets stringent clean air standards. FFUs play a key role in HVAC systems in facilities where air purity is critical.

Product Detail

Product Overview

The H14 FFU filter unit fan from Guangzhou LJF combines a stainless steel case, built-in fan, and H14 HEPA filtration in one modular ceiling unit. The fan circulates air through the filter with controllable airflow, while the graduated-density multilayer structure ensures high dust holding capacity, maximizing filter life and performance.

Engineered for low noise and low energy consumption, the unit features a lightweight design for easy installation, access, and cleaning — making it an ideal choice for cleanrooms, medical facilities, electronic manufacturing, and food processing where strict air quality control is required.

Available in standard 2×2 ft, 2×4 ft, and 3×3 ft sizes with custom dimensions on request, the LJF FFU adapts to flexible cleanroom layouts and can be configured to your design static pressure and room classification.

Key Features

• Stainless steel case — durable and corrosion-resistant, ensuring longevity and reliability in a variety of environments

• Built-in fan — circulates air through the filter, enhancing airflow and filtration efficiency

• High efficiency particle capture — effectively captures a wide range of airborne particles, ensuring a clean, safe environment

• Airflow control — provides adjustable airflow for customization to specific application needs

• Graduated density multi-layer — ensures high dust holding capacity, maximizing filter life and performance

• Low noise and energy consumption — designed for quiet operation and energy efficiency to reduce operating costs

• Lightweight design — easy installation, access, and cleaning, making maintenance simple

Technical Specifications

Parameter	FFU-LY-01	FFU-LY-02	FFU-LY-03
Box Size (mm)	575×575×320	1175×575×320	1175×1175×320
HEPA Filter (mm)	570×570×69	1170×570×69	1170×1170×69
Air Volume (m³/h)	600	1200	2000
Rated Power	130 W	80 W	185 W
Noise (dB)	<54	<60	<62
Weight (kg)	≈15	≈30	≈45
Filtration Efficiency	HEPA 99.99% @0.3μm / ULPA 99.99% @0.12μm	HEPA 99.99% @0.3μm / ULPA 99.99% @0.12μm	HEPA 99.99% @0.3μm / ULPA 99.99% @0.12μm
Average Wind Speed	0.45 m/s ±20%	0.45 m/s ±20%	0.45 m/s ±20%
Wiring	Power cord / terminal block / male & female connector	Power cord / terminal block / male & female connector	Power cord / terminal block / male & female connector
Speed Function	Single-stage / three-stage / five-stage / voltage stepless speed regulation	Single-stage / three-stage / five-stage / voltage stepless speed regulation	Single-stage / three-stage / five-stage / voltage stepless speed regulation
Power	AC single phase 110V / 220V, 50 / 60 Hz	AC single phase 110V / 220V, 50 / 60 Hz	AC single phase 110V / 220V, 50 / 60 Hz

All sizes and styles can be customized.

Applications

• Cleanrooms — semiconductor manufacturing, pharmaceuticals, biotechnology, and laboratories where particle-free air is critical

• Medical facilities — maintain sterile conditions to minimize infection risks and ensure patient safety

• Electronic manufacturing — microelectronics and precision components where air quality directly affects product quality

• Food processing facilities — maintain air quality standards and prevent pollution, ensuring food safety

Maintenance & Service Life

• Monitor unit face velocity and room particle counts; replace the HEPA filter when pressure drop reaches final resistance or leakage is detected.

• Clean the pre-filter (if fitted) regularly to protect the HEPA and maintain airflow.

• Periodically check fan balance and fastening; keep spare filters on hand for planned changeovers.

Product FAQ

Q1. What is an FFU and how does it work?

A Fan Filter Unit (FFU) combines a fan and a HEPA/ULPA filter in one modular ceiling unit. It draws room or plenum air, filters it to HEPA cleanliness, and supplies it downward, creating a clean zone without long duct runs.
Q2. FFU or centralized AHU — which should I choose?

FFUs are modular, flexible, and energy-efficient for localized or upgradable clean zones. Centralized AHUs suit large uniform areas with central maintenance. Many facilities combine both: AHU for general supply, FFUs for critical zones.
Q3. What cleanliness class can H14 FFUs achieve?

With proper room design and airflow, H14 FFUs support ISO Class 5–7 cleanrooms. The final class depends on room layout, air changes, and particle generation control.
Q4. Can you provide custom FFU sizes?

Yes. In addition to standard 2×2 ft, 2×4 ft, and 3×3 ft sizes, we produce custom dimensions and airflow configurations to match your cleanroom layout.

Why Choose Guangzhou LJF

• Complete cleanroom solution — FFUs, HEPA filters, and pre-filtration from one manufacturer

• Verified H14 performance with individual filter testing

• Factory-direct pricing for cleanroom projects and bulk supply

• Technical support for cleanroom design and sizing

Request a Free Quote — tell us your cleanroom size, target ISO class, and layout, and our engineers will size the FFU configuration and provide pricing.

Request a Quote

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H14 FFU Filter Unit Fan

Product Overview

Key Features

Technical Specifications

Applications

Maintenance & Service Life

Product FAQ

Q1. What is an FFU and how does it work?

Q2. FFU or centralized AHU — which should I choose?

Q3. What cleanliness class can H14 FFUs achieve?

Q4. Can you provide custom FFU sizes?

Why Choose Guangzhou LJF

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