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What is Indoor Air Quality (IAQ)?

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Indoor air quality (IAQ) refers to the quality of the air inside buildings, homes, and other enclosed spaces that people occupy. It is important because poor IAQ can have negative effects on the health and comfort of occupants, particularly those with allergies or respiratory conditions.

IAQ can be affected by a variety of factors, including inadequate ventilation, poor air filtration, high humidity, and the presence of indoor pollutants such as dust, mold, and volatile organic compounds (VOCs).

Indoor pollutants can come from a variety of sources, including building materials, furniture, cleaning products, and cooking appliances. Outdoor pollutants such as vehicle emissions and pollen can also enter indoor spaces and affect IAQ.

There are several strategies for improving IAQ, including increasing ventilation, using air filtration systems, controlling humidity levels, and reducing or eliminating indoor pollutants. Building occupants can also take steps such as avoiding smoking indoors, cleaning air ducts, and using non-toxic cleaning products to help maintain good IAQ.

What are indoor air pollutants?

Indoor air pollutants are contaminants that can affect the quality of the air inside buildings and homes. They can come from a variety of sources, including building materials, household products, and outdoor air.

Some common indoor air pollutants include:

  1. Volatile Organic Compounds (VOCs): These are gases that are released by products such as cleaning supplies, paint, and furniture. They can cause respiratory irritation, headaches, and other health problems.
  2. Particulate Matter: This includes dust, dirt, and other small particles that can be inhaled and cause respiratory problems, especially in individuals with asthma or allergies.
  3. Mold and Mildew: These fungi can grow in damp areas and produce spores that can cause respiratory problems.
  4. Carbon Monoxide: This is a colorless, odorless gas that can be produced by gas stoves, furnaces, and other fuel-burning appliances. It can cause headaches, dizziness, and even death in high concentrations.
  5. Radon: This is a radioactive gas that can seep into buildings from the ground and cause lung cancer.
  6. Tobacco Smoke: This contains a variety of harmful chemicals that can cause respiratory problems, cancer, and other health issues.
  7. Asbestos: This is a fibrous mineral that was used in building materials until it was discovered to cause lung cancer and other health problems.

Reducing exposure to indoor air pollutants requires identifying and controlling sources of pollution, improving ventilation and air filtration, and practicing good indoor hygiene, such as regular cleaning and maintenance of appliances.