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OSA-CM Series

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The OSA series is a 100% outside air unit.

The OSA series uses 100% outside air.  This constant stream of fresh air helps reduce the amount of germs circulating in the area while still dehumidifying the air it pulls in.


  • Available in sizes from 10 tons to 200 tons
  • Optional heat pump models
  • Galvanized, stainless steel or aluminum construction
  • Standard models configured as 100% outside air, 100% recirculating air or with optional mixing box
  • Optional low ambient control packages include hot gas bypass, condenser fan cycling and compressor unloading
  • Air cooled or water cooled condensing units available


  • Industrial Process Dehumidification
  • Pharmaceutical Manufacturing
  • Active Storage
  • Munitions Storage
  • Automated Ingredient Handling Systems
  • Supermarkets
  • Hotels
  • Schools
  • Office Buildings
  • Restaurants
  • Laboratories

Confidentiality Notice

This drawing and information contained herein are the exclusive property of Scientific System LLC and shall be returned upon demand and shall not be reproduced in whole or in part, disclosed to anyone else or used, without written consent of Scientific Systems LLC.

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