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Laws & Regulations for Duct Ventilation Systems

Laws & Regulations for Duct Ventilation Systems

Check laws and regulations on ventilation systems for building types and usages.

Multi-family housing

For multi-family housing buildings accommodating 100 or more units, ventilation systems, whether natural circulation or forced circulation, shall be installed to ensure at least 0.7 ventilation per hour.

Complex facility

Complex facilities with gross area of 2,000 m2 or larger (underground commercial area) or 3,000 m2 or larger (library, welfare facility) must have forced ventilation systems with flow rate of 36 m3/h or larger, and sales and business facilities must have forced ventilation systems with flow rate of 29 m3/h or larger.

School Health Act

Forced ventilation system shall be operating on a regular basis

  • Flow rate per person: 21m3/h or above
  • CO2 concentration: 1,000 ppm/h or below

  • Fine Dust: 150 ug/m3 or below 24-hour mean

Indoor Air Quality (Recommended Standard)

  • CO : 1,000ppm/h or below
  • CO2 : 1,000ppm/h or below

  • Form Aldehyde: 210 ug/m3 or below

  • Benzene: 30 ug/m or below

Indoor Air Pollutants and effects thereof

Pollutant Source Related Disease
Dust Ambient air, body activity Respiratory disease, allergic asthma, atopic dermatitis
Cigarette smoke Smoking Asthma, lung cancer
Carbon dioxide Breathing, combustive instruments Vomiting, labored breathing
Micro-organism (Fungi) Humidifier, air conditioner, pet Allergy, atopic dermatitis, rhinitis, infectious diseases
Formaldehyde Furniture, insulation Dizziness, anxiety, memory loss, skin disease
Organic solvent Paint, spray, air freshener Dizziness, headache, vomiting, memory loss

Attached files

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