4 Elements of Air Conditioning are:
- Temperature: 20-24 degree C in summer. 24-27 degree C in winter.
- Relative Humidity: 40-60%.
- Airflow: Max.12m/min. This is air velocity is in occupant space.
- Air cleanness + Indoor Air Quality (IAQ)
Indoor Air Quality (IAQ) in 4 Elements of Air Conditioning
- PM2.5 = 10 µg/m3
- CO2: Max. 700 PPM above outdoor level