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Indoor Air Quality

Our professional team of experts includes a certified DOSH Indoor Air Quality Assesor (IAQ) who can provide indoor environmental assessment and consulting services. Besides conducting IAQ assessments, our specialties also include providing our clients with technology that complies with policymaker guidelines to improve ventilation and air quality


We offer expert advice and assessment of source control, filtration, and the use of ventilation to dilute contaminants with the aim of improving a building’s overall air quality.
We offer a comprehensive range of Indoor Air Quality (IAQ) assessment services, including:

  • International WELL (v1 and v2) Building Institute
  • Fundamental Air Quality
  • Smoke-free Environment
  • Ventilation Effectiveness
  • Construction Pollution Management
  • Enhanced Air Quality
  • Enhanced Ventilation
  • Operable Windows
  • Air Quality Monitoring and Awareness
  • Pollution Infiltration Management
  • Combustion Minimization
  • Source Separation
  • Air Filtration
  • Active VOC Control
  • Microbe and Mold Control
  • LEED v4.1

BREEAM Hea 02 Indoor Air Quality
  • Air Quality Action Plan (IAQP)
  • Ventilation
  • Volatile organic compound (VOC) emission levels (products)
  • Volatile organic compound (VOC) emission levels (post
  • Potential for natural ventilation
  • Testing and measurement of pollutants in accordance with
    the relevant standards
Indoor Air Quality Assessment
  • Flush-out
  • Air Testing
Enhanced Indoor Air Quality Strategies
  • Mechanically ventilated spaces
  • Naturally ventilated spaces


Monitoring important indoor air parameters helps minimize the risk of infection with viruses or bacteria and increases well-being and concentration. Correct ventilation in crowded rooms will significantly reduce the risk of infections, including coronavirus.

But when is the best time to ventilate? The carbon dioxide level (“parts per million” ppm) is the key indicator! It is vital for the CO2 level to be monitored for our general well-being and to evaluate the room air quality.



We provide an enhanced range of technical services to ensure healthier, safer and more efficient means for better air quality. As our team includes DOSH certified assessors, our solutions are not just based on sound research of your environment, but you are assured that the solutions proposed to you will be effective in improving your air quality.
We will ensure the optimal filtration, ventilation, airflow as well as controls, and develop a system which not only achieves the industry required standards, but exceeds them.

King Design


Dr. Roger Sze To, who has spent more than 14 years researching air filtration and purification technology, headed a team of scientists and researchers in the development of sustainable and pollution-free clean air solutions.
His professional team has successfully developed patented acoustic high efficiency air filtration technology (AHEAF), which improves filtration efficiency while lowering energy consumption and consumable costs, as well as developed patented Silver Ion Sterilization purifying technology in 2020, which effectively eliminates the COVID-19 virus.

King Design