Heating, Ventilation, and Air Conditioning System IC Sampling

The Centers for Disease Control and Prevention (CDC) states that heating, ventilation, and air conditioning (HVAC) systems in health-care facilities are designed to maintain the indoor air temperature and humidity at comfortable levels for staff, patients, and visitors; maintain control odors; remove contaminated air; facilitate air-handling requirements to protect  susceptible staff / patients from airborne health care associated pathogens; and minimize the risk for transmission of airborne pathogens from infected patients.  Decreased performance of these systems, filter inefficiencies, improper installation, and poor maintenance can contribute to the spread of health-care–associated airborne infections.  System performance monitoring should include: determining pressure differentials across filters, regular inspection of system filters, testing of HEPA filters, and manometer tests for positive and negative pressure areas in accordance with nationally recognized standards, guidelines, and manufacturers’ recommendations.

Higgins can supply the following services:

  • Assist in determining the differential pressures in critical areas
  • Inspection and oversight during filter replacements in operating theaters and pharmacies
  • Testing of HEPA and ULPA filters using IEST and ISO guidelines
  • Review of environmental infection control aspects of facilities preventative / predictive maintenance procedures, testing protocols, etc.
  • Monitor areas with special ventilation requirements
  • Inspection and testing of HVAC condensate trays and engineered humidification systems
  • Environmental infection control air sampling during air handling unit (AHU) duct cleaning or filter replacement