Of the three, the first approach-source control — is the most preferred & practical approach to improve indoor air quality to remove individual sources of pollution or reduce their emissions. The source control means minimizing the use of materials and products which cause indoor pollution. By employing good hygiene practices & housekeeping practices, you can minimize biological contaminants (including the control of humidity and moisture, occasional cleaning and disinfection of wet or moist surfaces) and control particles.
Another practical and commonly employed practice is — outdoor air ventilation to increase the amount of outdoor air coming indoors & lower the concentrations of indoor air pollutants in the home. This includes installing an exhaust system that increases outdoor air flows, especially when using pollutant sources. Most HVAC systems do not bring fresh air mechanically into the home. Opening doors & windows, operating attic fans when the weather and safety permits. You can either use a window air conditioner with the vent control open that can help to increase the outdoor ventilation rate in the home.
Air cleaning is the third approach that is not generally regarded as sufficient but can be used to supplement both ventilation & source control. There are many types of air cleaner available in the market with different sizes and prices. Some of them are electronic particle air cleaners, air cleaners, and ionizers used to remove airborne particles.
