Reducing mould levels through UVC lighting

By installing UVC lighting systems, Airgene reduced mould levels from 1882 to 115, with no indication of significant levels of mould growth in tested areas.

Airgene’s UVC lighting team was engaged to supply, install, and commission UV lighting on two AHUs at a highly sensitive public building.

To investigate and assess the levels mould present for the purposes of remediation, we engaged the services of IECL (a leading mould testing laboratory and indoor air quality consulting firm).

Pre-install assessments of 27 fungal structures recorded mould levels of 1882 and identified fungal hyphae (which indicates recent active mould growth) and elevated levels of Cladosporium which is known to be allergenic and produce mycotoxins.

According to the ANSI/IICRCS520 standard, at these levels the premises would be classed as Condition 3 and the detected mould may pose a hazard to the health and wellbeing of occupants.

All works were performed to meet all applicable Australian Standards:

• NADCA ACR
• AIRAH applicable AS/NZS 3666.2/6 /2002
• AS1851 – HVAC Hygiene Best Practice Guidelines

After the installation of the UVC lighting, mould levels drop from 1882 to 115, with no indication of significant levels of mould growth in tested areas.