Industry Guidelines on Indoor Air Quality

Indoor Air Quality – Background

Indoor air quality has been an important part of building design and maintenance for well over 100 years. Initially the drive for indoor air quality was for people to be able to work in “healthy” buildings to prevent the spread of disease. With the invention of air conditioning this arguably led to the boom in Sick Building Syndrome in the 80s. And then towards the end of the 20th century, the environmental impact of air ventilation and conditioning became the priority with ever greener and sustainable energy initiatives becoming the focal point of how buildings supplied conditioned air. In the wake of Covid-19, it seems that disease control element is now taking the driving seat once more.

Pre-Covid IAQ Monitoring

Before the current pandemic, Indoor Air Quality testing was generally used to measure concentration levels of a number of common pollutants outlined by the WHO, such as Carbon Monoxide (a key indicator of “fresh” air exchange rate), Formaldehyde, Particulate Matter and Volatile Organic Compounds. There are a number of standards and guidelines available in the UK although they provide little information on exposure limits and concentration guidelines. Typically, indoor air quality testing would highlight whether or not the system was working correctly or not.  Whilst the design of systems would be expected to follow certain guidelines, the operational performance and air hygiene standards may not always be monitored as there are few statutory requirements (unlike for example water hygiene).

Post Covid IAQ Monitoring

Since the Covid outbreak, the risk of spreading infectious disease within buildings has a whole new emphasis.  We will look at various guidance being provided by industry bodies such as CIBSE, REHVA and ASHRAE, with a new onus on providing clean, fresh air into buildings to dilute any recirculating air. This is like to lead to new stricter recommended guidance, and possibly statutory regulation for IAQ. It is possible that all buildings with mechanical ventilation systems may move closer in practice to the standards of HTM:03-01 regulations which cover the heating and ventilation of health sector buildings.

We will consider the best monitoring techniques that may be utilised going forward and how the parameters that are monitored relate to healthy ventilation systems.


About the speaker - Robert has worked in the ventilation hygiene sector since 2003, within a technical role offering specifications, and solutions to clients for managing ventilation hygiene within buildings.  The types of solutions offered include ventilation hygiene surveys to assess the cleanliness of ductwork systems, cleaning of general ventilation/grease extract systems, indoor air quality surveys, and fire damper testing.  Robert has worked on ventilation compliance solutions to many different types of ventilation systems, within a range of different building environments and uses. His work primarily involves working to standards as defined within, BESA TR/19 – Cleanliness Guide to Good Practice – Internal Cleanliness of Ventilation Systems, BS15780 Duct Cleanliness, and HTM 03-01 - Health Technical Memorandum.


Colin joined Ductclean in April 2006 primarily to support the business in Ventilation Hygiene projects which focused on the servicing and cleaning of kitchen extraction systems. After several years of delivering contracts for clients such as the UKs largest supermarket chains, hospitality businesses and NHS, Colin began providing monitoring and ventilation system surveys as well as cleaning of systems. With the ever growing awareness around the importance of air quality in buildings, Colin started to concentrate on talking to existing clients and advising them of the best practice for ventilation systems using industry guidelines. Colin has vast operational experience of maintaining the best possible ventilation hygiene in all types of building and all sizes of systems.

Event Properties

Event Date 24-02-2021 6:00 pm
Event End Date 24-02-2021 7:00 pm
Cut off date 24-02-2021 6:00 pm
Individual Price Free
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