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Common Misconception

Air conditioners, while helpful for cooling, do not necessarily clean the air unless they are equipped with high-quality filters and are regularly maintained. In some cases, they can even circulate pollutants if filters are dirty or if the system draws in outdoor air from polluted environments.

Myths :

Indoor air is always cleaner than outdoor air.

Facts :

Indoor air can be more polluted than outdoor air due to factors like inadequate ventilation, indoor pollutants and lack of fresh air.

Scenarios

Indoor air pollution affects everyone — whether you're at home, commuting, or spending time in public spaces. Below are common settings where IAQ issues arise and the pollutants you may encounter

Places & Pollutants

Places & Pollutants

Impacts-Health and Beyond

Impacts-Health and Beyond

Advice & Solutions

For Individuals 01
  • Increase Airflow: Open windows and doors regularly to allow fresh air to circulate. Use exhaust fans in kitchens and bathrooms to remove pollutants.
  • Use Dehumidifiers: Maintain indoor humidity levels between 30% and 50% to prevent mold growth. Address any leaks or water damage promptly.
  • Select Eco-Friendly Materials: Use paints, finishes, and cleaning products that are low in volatile organic compounds (VOCs) to reduce harmful emissions.
  • Dust and Vacuum: Clean surfaces frequently to reduce dust, allergens, and pet dander. Use a vacuum with a HEPA filter for better particle capture.
  • Wash Bedding: Regularly wash bed linens and curtains to eliminate dust mites and allergens.
  • Use Air Purifiers: Invest in air purifiers with HEPA filters to help remove airborne particles and pollutants.
  • No Smoking Indoor.
  • Limit Harsh Chemicals: Reduce the use of strong cleaning agents and personal care products that can emit harmful chemicals.
  • Incorporate Plants: Use indoor plants that can help improve air quality by absorbing toxins and producing oxygen.
  • Service HVAC Systems: Ensure that heating, ventilation, and air conditioning systems are regularly maintained and cleaned to ensure efficient operation.
  • Use Air Quality Sensors: Consider using indoor air quality monitors to keep track of pollutant levels and humidity.
  • Avoid unnecessary acceleration and deceleration, because it increases fuel/electricity consumption.
  • Switch off when idling.
  • Close windows when travelling at high speed – this will decrease aerodynamic drag and lower fuel/electricity consumption.
  • Avoid carrying unnecessary things or installing unnecessary car fittings as extra weight will result in fuel/electricity wastage and extra pollution.
  • Only use air-conditioning when you have to – flow-through ventilation or open windows at lower speeds can be just as effective without the extra fuel/electricity consumption.
For Government & Public Transport Operators 02
  • Inform the Public: Make air quality pledges and policies known to the public and employees. Create awareness about the importance of IAQ and the measures being implemented.
  • Minimize Congestion: Schedule operations to avoid congestion, especially in enclosed spaces like tunnels, to reduce pollutant buildup.
  • Use of Plants: Integrate greenery within transport stations to naturally improve air quality and provide aesthetic benefits.
  • Enhance Ventilation Systems: Ensure that air-conditioning and ventilation systems are designed to provide adequate fresh air supply. Maintain outdoor air intake to dilute indoor pollutants effectively.
  • Regular Maintenance: Conduct routine maintenance of HVAC systems, including cleaning and replacing air filters, to ensure optimal performance and air circulation.
  • Materials Selection: Use low-emission materials for interior finishes, such as low-VOC paints and furnishings, to minimize air pollution.
  • Passenger Compartment Design: Design compartments to facilitate airflow and reduce the risk of pollutants accumulating. Ensure that air outlets are positioned for optimal distribution.
  • Implement Monitoring Protocols: Regularly monitor air quality indicators, such as carbon dioxide (CO2) levels, to assess ventilation effectiveness. Establish a schedule for compliance checks, especially during peak hours.
  • Use Surrogate Indicators: Rely on CO2 as a surrogate indicator for ventilation adequacy, ensuring levels remain below specified guidelines (2,500 ppm for good quality).
  • Report air pollution nuisance from outside sources to EPD
  • Develop guidelines for maintaining IAQ in public facilities and ensure compliance.
  • Raise awareness about the importance of IAQ in public spaces and encourage community involvement in maintenance efforts.

Information Hub

For further reading on all aspects of air quality, we have curated a section of government reports, academic and industry studies and papers, and other in-depth materials.

Explore our information hub

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