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IAQ Certification Scheme
Guides and Forms for Certification
Map of Certified Premises
IAQ Service Providers
Knowledge Sharing
To enhance public awareness and understanding of IAQ and useful tips on IAQ management
Common Indoor Air Pollutants
Carbon dioxide
Carbon monoxide
Respirable suspended particulates
Nitrogen dioxide
Ozone
Formaldehyde
Volatile organic compounds
Radon
Biological contaminants
Mould
Environmental tobacco smoke
Leaflets / Booklets
Mitigate Indoor Mould
IAQ Certification Scheme
IAQ & You
IAQ in Residential Buildings
IAQ in Offices and Public Places
In-Vehicle Air Quality
Healthy Renovation
New Furniture & IAQ
VOCs & You
Radon & You
Second-hand Smoke
Biological Pollutants & You
Mould & You
Improving IAQ at Home
Improving IAQ in Buildings
FAQ
Causes of indoor air pollution?
Common indoor air pollutants?
Health effects due to poor IAQ?
Sick building syndrome?
Effects of radon on health?
Effects of formaldehyde?
Effects of second-hand smoke?
Is mould harmful?
Legionnaires' disease?
How to improve IAQ in air-conditioned buildings?
...more questions
IAQ for Kids
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What’s New
2024.05.08
Over 1 000 premises commended for enhancing indoor air quality in celebration of IAQ Certification Scheme’s 20th anniversary (with photos)
2023.04.28
Extension of time for renewing IAQ certificates to cope with the COVID-19 and the corresponding arrangement (UPDATED)
2021.02.10
News supplements of Indoor Air Quality Certificate Awards was widely reported in Oriental Daily News, Headline Daily, Sky Post and The Standard.
Events and Activities
2025.11.17
Indoor Air Quality Management for Clubhouses
2025.02.14
Indoor Air Quality Service Provider Trade Fair
2024.12.17
Indoor Air Quality Management for Catering Industries
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