The Usefulness of Air Purifiers
It is a shocking fact that the air inside a home is dirtier than the air outside because of the presence of the following pollutants: mold and mold spores, which were created from the existing moisture inside the home; dust particles and bacteria coming from forced-heating and cooling systems; pet fur and dander; if there are smokers in the family, the toxins are into the air; pollen and outdoor allergens can be blown in from outside through the doors and windows and can land on the carpet and upholstery. The concentration of contaminants is, therefore, greater inside the home and can affect the health of people who are prone to allergy or have respiratory difficulties, so the homeowner must find measures to reduce the level of contaminants and one good way is to use an air purifier.
There are many types of air purifiers, such as filters, such as air cleaners and HEPA filters; ionizing purifiers; ozone generators; with adsorbents; with UV light. Air purifiers with filters are usually installed into two areas in the house: as part of the heating or cooling system of the home or they are installed between the air return duct and the furnace or placed into the air return vents in every room of the house. Filtering medium used are foam, cotton, fiberglass or synthetic fibers; also, if the filter material is more dense the advantage is that smaller size particles are caught at the filter. Another type of filter is the High Efficiency Particulate Air (HEPA) filter which is designed for filtering air particles of 0.3 micrometers in size, helpful in filtering out allergens and dust particles.
A method called corona discharge which convert air molecules into ions is the main mechanism in ionizing purifiers and since the air is neutrally charged, when it passes through the ionizing filter there will be an ionization of air molecules, such that large particles in the air, like dust and contaminants, are more prone to be ionized and will be separated from the rest of the components in the air.
22 Lessons Learned: Purifiers
Ozone generators function similarly to ionizing purifiers, but instead of ionizing air molecules it converts them into ozone, a molecule made up of three oxygen atoms, thereby eliminating some of the oxygen components in the air which may be considered as contaminants; at the same time, manufacturers claim that ozone generators deodorizes and disinfects the air.
Why People Think Purifiers Are A Good Idea
Air purifiers that install activated charcoal as an adsorbent material allow for the removal of odors, fumes and chemicals, contaminants that are present in the air, and because activated charcoal is extremely porous, it is effective in trapping passing air molecules so that large size particles of contaminants are stuck into the adsorbent pores, working effectively into two ways, filtering the contaminants and adsorbing them into the filter at the same time.