AIRAH Best Practice Guideline: HVAC hygiene
This resource establishes the criteria for evaluating the internal cleanliness of HVAC system components and clearly determines when cleaning is required, according to the building use.
It describes the components of HVAC systems to be evaluated, the types of contamination likely to be encountered, and includes for post-fire and flood damage assessments. Minimum inspection frequencies for various HVAC systems and components are specified for scheduled maintenance programs.
The Guideline also provides test methods that can be used to verify that a clean system hygiene level has been achieved following a system cleaning or restoration project. It includes recommendations for creating new access openings within HVAC systems where they are required to facilitate the inspection and cleaning of the internal surfaces of system ductwork and components.
This resource does not include hygiene inspections or recommendations for either cooking (kitchen hood exhaust) or hazardous (i.e. laboratory, fume cupboard) exhaust systems.
It does not provide instructions on how to clean or restore HVAC systems, but it does provide some guidelines on the management of cleaning and restoration projects.
Published: 2018 | Pages: 37
Please note: The HVAC Hygiene Best Practice Guideline is currently available exclusively as a hard copy order. It is under review by AIRAH’s Indoor Air Quality STG
, with the new edition expected for release in early 2022. This updated edition will be made available in both hard copy and digital formats.