HVAC Hygiene Audits

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Equipment and Procedures

To protect your occupied space and building occupants from contamination, the actual cleaning and decontamination process is conducted under negative air pressure. The contaminants are drawn into a large HEPA (high efficiency particulate arrestive) filtration machine that is 99.97% efficient at 0.3 microns. The source removal of contaminants without the use of negative air machines poses a risk of cross contaminating the building and increasing the risk of occupant exposures to contaminants found in the air handling system. To validate the effectiveness of cleaning and decontamination projects we follow the guidelines laid out in NADCA Standard ACR 2006 Assessment, Cleaning, and restoration of HVAC systems. We take before and after photographs of all systems cleaned and provide a comprehensive maintenance report with each project.