Improving indoor air quality begins with identifying the best ways to reduce or eliminate sources of indoor air pollution. One effective method is the use of air purifiers equipped with HEPA filters, which can capture small particles like dust, pollen, and animal dander. These devices are particularly useful in homes with pets or in regions prone to wildfire smoke, as they help maintain a healthier living space by filtering airborne contaminants.

Proper maintenance of HVAC systems is another critical step in ensuring good indoor air quality. Regularly inspecting duct work, replacing filters, and cleaning air ducts can prevent the buildup and circulation of indoor pollutants. Additionally, improving air flow through ventilation is essential. Opening windows when weather permits, installing exhaust fans, and ensuring air intakes are not blocked can significantly enhance the ventilation rate and reduce high levels of pollutants in the air.

Addressing humidity levels is equally important in preventing damp indoor environments that encourage mold growth. Maintaining a relative humidity level between 30% and 50% helps inhibit the growth of mold and dust mites. Fixing water leaks promptly and using dehumidifiers in areas prone to high humidity can also prevent mould growth and the associated health risks. Furthermore, reducing exposure to point sources of pollution, such as radon gas and cigarette smoke, is essential for a cleaner and safer indoor environment.