CASE STUDY: HVAC PTAC UNITS - PREVENTIVE MAINTENANCE EVALUATION PROJECT DESCRIPTION: MOLD, BACTERIA, LEGIONELLA, HOSPITAL PATIENT ROOMS Scope of Services: AET was contracted by a Hospital Facilities Department and Infection Control Officer to evaluate preventive maintenance/cleaning procedures utilized on PTAC units in patient rooms. Package Terminal Air Conditioning (PTAC) units are self contained, through-the-wall HVAC systems w

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