Indoor Air Pollution Sources

Indoor pollution sources that release gases or particles into the air are the primary cause of indoor air quality problems. Inadequate ventilation can increase indoor pollutant levels by not bringing in enough outdoor air to dilute emissions from indoor sources and by not carrying indoor air pollutants out of the area. High temperature and humidity levels can also increase concentrations of some pollutants.

Airborne Particles

ATTIC

  • Asbestos
  • Insulation
  • Fibreglass
  • Dust and dust mites

BEDROOM

  • Allergens
  • Dust and dust mites
  • Pet hair and dander
  • Carbon dioxide (CO2)
  • Carpet

BATHROOM

  • Excess humidity
  • Personal hygiene products
    • Aerosols, sprays, etc.
  • Mold spores

KITCHEN

  • Lingering odors
  • Bacteria
  • Cook pollutants

HOME OFFICE

  • Printers, photocopiers
    • Ozone, volatile organic compounds (VOC)
  • Melamine furniture
    • Harmful vapors, voe, formaldehyde

LIVING ROOM

  • Fireplace
  • Dust and dust mites
  • Allergens
  • Second-hand smoke
  • Humidifiers
  • Pet hair and dander
  • Carpet

BASEMENT

  • High humidity levels
  • Unpleasant odors
  • Mold
  • Carbon monoxide (CO)
  • Fireplace/smoke
  • Firewood
  • Radon
  • Solvents
  • Woodstove
  • Dust and dust mites
  • Combustion system(s)
  • Paint and chemicals
  • Household cleaners

GARAGE

  • Carbon monoxide (CO)
  • Gas
  • Solvents
  • Pesticides and herbicides
  • Dust
  • Paint and chemicals
  • Cleaning agents