Common IAQ Contaminants Found in Homes

There are many invisible pollutants that can quietly build up in a home, especially when ventilation is poor or products and appliances aren’t well-maintained. Here are some of the most common:

  • Particulate Matter (PM2.5 and PM10): Tiny particles from dust, cooking, smoke, and outdoor air.
  • Volatile Organic Compounds (VOCs): Gases released from cleaners, paints, furniture, and personal care products.
  • Carbon Dioxide (CO₂): Builds up in crowded or poorly ventilated spaces.
  • Carbon Monoxide (CO): A dangerous gas from faulty fuel-burning appliances.
  • Radon: A naturally occurring radioactive gas that can enter from the soil beneath your home.
  • Ozone: Can come from outdoor air or be produced by certain air purifiers and electronics.
  • Humidity and Mold Spores: Excess moisture can lead to mold growth, dust mites, and bacteria.

Understanding what’s in your air is the first step to cleaning it up.