Factors Affecting Indoor Air Quality

On average people spend 90% of their time indoors so it’s important to know that indoor air can be more polluted than outdoor air. Primary causes are sources that release gases or particles into the air, inadequate ventilation and high temperature & humidity levels. Some examples are: oil, gas, tobacco, asbestos containing insulation, wet or damp carpet, household cleaning products, central heating & cooling systems & outdoor sources such as radon & pesticides.