01
Eliminate pollution sources
Use fewer products with volatile organic compounds — detergents, hair spray, adhesives and paints; choose low-VOC building materials, furniture and carpets.
Home/Know the air you breathe every day
IAQ knowledge
Know the air you breathe every day
From pollution sources to filtration technology — three decades of site experience, distilled into practical guidance.
01
What is in indoor air
Home and office air holds hundreds of millions of particles — visible dust, and invisible allergens and microorganisms. They affect health, sleep and quality of living, and reduce the efficiency of air conditioning equipment.
Ordinary filters cannot provide relief; only the right filtration technology makes a measurable difference.
02
Three steps to better indoor air
02
Increase ventilation
Maintain good ventilation with sufficient fresh air supply; install exhaust where needed. Keep 23–26°C in summer, 20–24°C in winter, relative humidity 40–70%.
03
Install the right air cleaners
Match technology to the contaminant: HEPA for particles, activated carbon for odour and VOCs, electrostatic collection for grease mist and smoke.
03
Daily practice & selection guide
Daily practice
- Avoid smoking indoors;
- Use fewer consumer products containing VOCs;
- Keep premises clean and dry;
- Maintain good ventilation with sufficient fresh air;
- Air out new furniture and dry-cleaned clothes before bringing them in;
- Install air cleaners where needed.
Selecting an air cleaner
- Identify the contaminants first, then choose the suitable technology;
- Higher filtration efficiency is better (99.97% over 90%), and smaller filtered particles are better (0.01 micron over 0.3 micron);
- Airflow must match the space — ASHRAE suggests 4 to 15 air changes per hour;
- Choose HEPA or electrostatic units with generous filter / plate area, or they will need washing or replacement frequently;
- Note that ionisers may produce significant ozone and soil nearby walls and tables;
- Consider replacement cost, filter life and energy consumption — over the long term, electronic / electrostatic cleaners are more economical and environmental-friendly.
04
True HEPA filtration
HEPA — High Efficiency Particulate Air — describes a deep-bedded, randomly positioned fibrous media recognised as the most efficient way to remove sub-micron particulates: at least 99.97% at 0.3 micron.
Why choose Honeywell Enviracaire?
- 99.97% efficiency at 0.3 micron; near 100% at 0.001 micron due to the diffusion effect;
- Tested by Singapore's standards testing authority at >99.6% for bacteria, mould and yeast removal; also tested by NUH;
- Classified by the US FDA as a Class II Medical Device (Reg #K872359);
- Meets American Standard ES-1 for the Association for the Advancement of Medical Instrumentation (AAMI).
