Filter-fan-units (FFU) for safe room air technology

An FFU (Filter-Fan-Unit) consists of a high-performance filter and an integrated fan. It draws in air from the environment and emits filtered air of a defined clean quality. The highly purified filtered air is therefore free of particles such as dust, bacteria, aerosols, germs and pollen. The air flows through the cleanroom via a laminar flow with a corresponding air velocity and carries airborne particles with it. The air flow rate is specified in cubic meters per hour (m³/h) and describes how many cubic meters of room air can be circulated per hour.

The FFUs from Schilling Engineering are integrated into the ceiling of cleanrooms, cleanroom tents and cleanrooms to save space. If the filters need to be serviced or replaced, they can be easily accessed from below. FFUs also ensure targeted cleanliness in our workstations and enclosures. Every FFU from Schilling Engineering is equipped with a high-performance ULPA 15 filter, which precisely filters even the smallest particles from the ambient air with a separation efficiency of 99.9995 %.

There is no generalised answer to this question. There is no general rule or regulation on how often filters need to be changed in a cleanroom operation. Our filters generally run for several years without needing to be changed.  However, the service life varies considerably depending on the application and the particle load in the ambient air.

https://schillingengineering.de/en/media-library/how-often-do-filters-need-to-be-changed-in-a-cleanroom?

You can obtain suitable replacement filters directly from us.

Yes, if the filter becomes clogged, the air output of the fan must be increased as the filter builds up a higher pressure.

A clogged filter can increase the electricity costs of an FFU by 10-20 %. Regularly checking and changing the filter saves a lot of energy.

Our energy-saving FFU SGE-EC significantly reduces maintenance costs. 
A single FFU saves approx. 1400 kWh per year compared to a standard MAC10 FFU. This means a saving of 420 euros per year (assuming electricity costs of 0.30 euros/kWh).