Recirculation Air Handling Units are custom-designed and custom-made units for the conditioning of recirculated air to become suitable for the respective application in respect to temperature and cleanliness.

The following treatment steps can be performed by the re-circulation air handling units: 

• Thermal treatment (cooling, heating)
• Particulate contamination treatment (filtration of air, depending on cleanliness requirements)
• Airborne molecular contamination (AMC) treatment (treatment via air scrubbing; so called "air-washer" (solvents, bases); treatment via chemical filtration (acids, solvents, bases and dopants))
• Sound attenuation treatment 

Properties

• Solely custom made air handling units for the treatment of recirculation air to become supply air to the cleanroom 
• Air volumes from 1,000 to 200,000 cm/h 
• Excellent thermal bridging behaviour (TB1) 
• Flexible, highly reliable, long lasting and energy efficient design 
• High quality components and accessories 
• Possibility to design for outdoor rooftop applications (weatherproof) 
• Possibility for modular design; for large air volumes loose packed delivery with subsequent field assembly 
• Experienced assembly / installation & commissioning teams 
• Air volume adjustment via variable speed (VSD) driven fans 
• Broad project experience especially across Asia