Filter Fan Unit (FFU) Installation, Replacement & Maintenance

Flexible and affordable filter fan unit provide a versatile, energy-efficient alternative to traditional HVAC systems, offering the portability and advanced control needed to maintain precise cleanliness in any cleanroom configuration.


Cost-effective and portable filtration

Versatile and Efficient Filter Fan Unit Solutions

Filter Fan Unit (FFU’s) are a cost-effective alternative to pressurized plenums and ducted air-handler filter networks.

These units can be deployed in a wide variety of configurations including Low profile, 2’x2’ through 4’x4’ sizes and a variety of filtration and communication strategies/protocols.

Because these units provide lower energy consumption and offer extreme portability and retrofit ability, many end users are replacing their larger, inefficient HVAC equipment configurations with this option.

One Source Environmental offers our own branded Filter Fan Unit but have worked with a wide variety of competitive units. We are happy to discuss Commissioning, Control, installation, replacement or maintenance regardless of the Manufacturer or Model.

Two technicians wearing full blue protective cleanroom suits, hoods, and gloves perform maintenance in a sterile white room. One worker stands on a ladder reaching up into an open square panel in the ceiling to install or inspect a circular component, while the second worker stands below looking up and assisting.

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Integrated control and maintenance

Filter Fan Unit (FFU) PLC Control Systems, Commissioning & Control System Integration

Through our partnership with Global Cleanroom Solutions (GCS) we offer PLC (Programmable Logic Controller) based FFU Control Systems that allow Clients to visualize and control the FFU’s providing Filtered Supply Air to their Cleanrooms.


FAQs

Have questions? We can help!

Here are some answers to common questions about this service. Still have questions? Get in touch and let’s talk through them together.

We recommend performing filter bench testing upon receipt of new filters and prior to installation to document initial integrity and performance.

Testing filters before installation helps identify manufacturing or shipping damage early and provides documentation to support responsibility if issues arise later.

Yes. If filter damage, leaks, or performance issues are identified, OSE can support repair or replacement to restore proper operation.

After repair or replacement, equipment is tested under controlled conditions to confirm restored performance and integrity before returning to service.

Yes. OSE provides documented test results, asset labeling, and field reports to support compliance and maintenance tracking.

Check out a few related projects

Explore recent projects where OSE supported filter testing, cleanroom certification, and performance verification efforts.

Reliable HEPA filter qualification, year after year

For more than six years, Danny has relied on OSE for cleanroom and laboratory HEPA filter qualifications, valuing efficiency, communication, and minimal disruption to operations. See why he chooses OSE for HEPA testing.

  • One Source Environmental is our go to for our yearly Cleanroom and Laboratory HEPA filter qualifications.  They are always cordial and efficient when performing their duties.  The OSETS team is very accommodating and works hard to make sure that the work is completed in a timely manner, without disrupting our ongoing manufacturing processes. . .The website is also very convenient for pulling up previous reports and for general informational purposes.  We would recommend OSETS to anyone looking for Cleanroom/Laboratory HEPA filter qualifications.
    Danny
    Director of Technical Services, Medical Device, Ma

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Two technicians wearing full blue protective cleanroom suits, hoods, and gloves perform maintenance in a sterile white room. One worker stands on a ladder reaching up into an open square panel in the ceiling to install or inspect a circular component, while the second worker stands below looking up and assisting.

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Related Industries

OSE supports filter installation, repairs and maintenance across a range of regulated industries where cleanroom performance is critical. Here are just a few industries where you can see our work in action.

Unsure of next steps?

Let’s talk about your cleanroom requirements. We know the questions to ask!

Whether you’re planning a new space, preparing for certification, or addressing performance challenges, OSE is here to help. Our team is ready to support your next step.