Aleternate Care Facility St. Croix
This image shows a dedicated outdoor air system (DOAS) installed for this project. The new system supplies 100% outside air to the patient rooms. Typical HVAC systems use supply and return ductwork which is not ideal when dealing with infectious diseases. So the DOAS supplies all the fresh clean air to the rooms. The new roof top exhaust fans installed along with the HEPA filters units in the patient rooms create the negative pressure. -U.S. Army photo by Alex Cubbage

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Photo by: Alex Cubbage |  VIRIN: 200508-A-CE999-001.JPG