The Importance of Good Air Quality

Indoor air pollution has a significant impact on our health, and we spend an average of 80% of our daily life in the indoor environment. How to deal with the pollutants such as the PM2.5 micron particles, dust mites, formaldehyde, VOCs, bacteria and allergens are becoming a major concern for the public health. Indoor air pollution impact on children, the elderlies, and patients with respiratory diseases or heart diseases are more at risk. Therefore, maintaining a good quality of indoor air helps to ensure good personal health.

Indoor Air Quality (IAQ) Test

IAQ test is a indicator that base on several elements which affects human's health. Those elements include temperature, humidity, and the hazardous substances. Our IAQ consultants have many years of experience and we use high precision measuring instruments to give accurate reading for your indoor air quality.

IAQ Test Service

Our IAQ test is divided into two categories: "Integrated" and "Formaldehyde/TVOC" which suit for the newly renovated units, residential buildings, commercial buildings, hospitals, clinics, schools, hotels, and restaurants. Base on test results, we will suggest appropriate solutions.
IAQ Test (General)
  • Coverage

    1. PM10

    2. PM2.5

    3. PM0.3

    4. Formaldehyde (HCHO)

    5. Total Volatile Organic Compounds (TVOC)

    6. Carbon Dioxide (CO2)

    7. ​Nitrogen Dioxide (NO2)

    8. Ozone

    9. Temperature

    10. Humidity

  • On-site report

  • On-site consultation

  • Detailed written report and recommendations (for corporate clients)

IAQ Test (Gas & Odor)
  • Coverage

    1. Formaldehyde (HCHO)

    2. Total Volatile Organic Compounds (TVOC)

  • On-site report

  • On-site consultation

  • Detailed written report and recommendations (for corporate clients)

IAQ Certification Scheme

In 2003, EPD launched the Indoor Air Quality (IAQ) Certification Scheme to promote good IAQ management practice. The two-level IAQ objectives (Excellent Class and Good Class) are used as the benchmark for IAQ of premises/buildings.
In light of the IAQ guidelines published by the World Health Organization in 2009 and 2010 respectively on dampness and mould, and selected pollutants (viz. HCHO, radon, CO, NO2, benzene, naphthalene, polycyclic aromatic hydrocarbons (PAHs), trichloroethylene and tetrachloroethylene), EPD has completed a review of the prevailing IAQ objectives adopted since 2003 (Old IAQ Objectives) under the IAQ Certification Scheme to update the IAQ objectives.  The New IAQ Objectives, including a new parameter of mould, were launched on 1 July 2019.

Better IAQ, Better Health

Clean Air and You - Indoor Air Quality

Assistance in applying for IAQ Certificate

We provide consulting service to assist organizations to apply for IAQ certificates, in which to maintain a healthy indoor environment.

IAQ labels for certification against the Old IAQ Objectives

IAQ labels for certification against the New IAQ Objectives