An air purifier is a device that removes contaminants from the air and disperses them in various particle sizes smaller than the eyes can see. It can remove smoke from the air, odors from cooking, fumes from chemicals, dust mites, pollen, bacteria, airborne viruses, germs, and much more. Air purifiers effectively remove all these harmful particles from the air we breathe.
Smaller models are often referred to as room size air purifiers and these are very popular with many consumers. You can buy them to fit into a room as small as twenty square feet. Air purifier manufacturers suggest that you should expect about four cubic feet of fresh air for every square foot of installed air purifier. These devices are designed for easy installation and can be installed by an average do-it-yourselfer without the help of a professional.
Many of the models available include HEPA filters. High efficiency air cleaners, also known as air purifiers, utilize high efficiency HEPA filters to remove particles and fumes from the air. The larger the particles the more effective the air cleaner will be. However, HEPA filters cannot filter out all the air contaminants. HEPA filters must be replaced once they become ineffective. The cost of replacement varies depending on what model you buy.
Some purifier models can remove pet dander, pollen, mite, dust mites, fungus, bacteria, airborne viruses, smoke and odors. Many of the air purifiers for smoke removal are multifunction. You can find a small or large appliance suitable for a room, depending on the size of the room. For example, the large floor standing prefilter is perfect for apartments or condominiums where you do not wish to have a large floor standing unit.
A good quality prefilter can remove larger particles and vapors such as cigarette smoke, paint fumes and chemical vapors. It is important that the filter does not produce an ozone layer above the particles it is filtering. Many of the newer air purifiers for smoke removal are designed to filter the air between two sheets of plastic. The first sheet of plastic is charged with a negatively charged electrostatic charge and the second sheet of plastic is positively charged. The negatively charged particles bind to the negatively charged sheet and are removed from the air.
Many manufacturers of home air purifiers filter both the air directly and the air through a paper plate. This provides a very effective trap larger particles and gases such as cigarette smoke, mold spores and pollen. The fine particles are bound with the electrostatic charge on the plate and are therefore removed from the home.