Indoor Home Pollution: The 10 Main Sources and What to Do About Them

We often think of pollution inside our homes, but what are examples of indoor air pollution? The biggest sources of emissions inside people's homes can vary depending on factors such as location, living habits, and the types of appliances and technologies used. When we know the sources of air pollution in our homes, we can take action to lower these emissions.

The main sources of indoor emissions 

Most commonly, our indoor home emissions come from these places:

  • Cooking: Cooking activities, especially if using gas stoves, can release pollutants such as nitrogen dioxide, carbon monoxide, and particulate matter into the indoor air.
  • Heating: If homes are heated using fossil fuels like natural gas, oil, or coal, the combustion process can lead to the release of carbon dioxide and other pollutants.
  • Appliances: Appliances that burn fossil fuels, like gas water heaters, can emit pollutants such as carbon monoxide and volatile organic compounds.
  • Cleaning Products: Many household cleaning products contain volatile organic compounds (VOCs) that can evaporate into the air and contribute to indoor air pollution.
  • Paint and Solvents: Similar to cleaning products, paints, varnishes, and other solvents can emit VOCs into indoor air.
  • Candles and Incense: Burning candles and incense can release particulate matter and potentially harmful compounds into the air.
  • Tobacco Smoke: Smoking indoors releases a mix of pollutants, including nicotine, formaldehyde, and tar.
  • Building Materials and Furnishings: Some building materials and furniture can emit volatile organic compounds and other chemicals over time.
  • Radon Gas from the ground: Radon is a naturally occurring radioactive gas that can enter homes through the ground and accumulate indoors, potentially leading to indoor air quality issues.
  • Poor Ventilation: Inadequate ventilation can lead to a buildup of pollutants indoors, as fresh air isn't effectively exchanged with outdoor air.

How to limit indoor emissions

To mitigate indoor emissions and improve indoor air quality, consider these steps:

  • Use electric or energy-efficient appliances instead of those that burn fossil fuels.
  • Opt for low-VOC or VOC-free cleaning products, paints, and solvents.
  • Ensure proper ventilation by using exhaust fans and opening windows when weather allows.
  • Consider using air purifiers with HEPA filters to help remove indoor air pollutants.
  • Install carbon monoxide detectors and smoke alarms to monitor indoor air quality.
  • Avoid smoking indoors.
  • Test for radon and take measures to mitigate its presence if detected.

Remember that the significance of these sources can vary depending on factors like geographic location, living conditions, and personal habits.


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Commons Team
August 25, 2023
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