Air purifiers are devices used to remove contaminants from the air. The device is marketed as being very useful for allergy and asthmatic sufferers. It is also very handy to have around when there is a smoker in the house because it helps to eliminate second hand smoke.

Air purifiers have both residential and commercial usages. Air purifiers are highly used for medical, industrial and various commercial industries.

By using HEPA (high efficiency particulate air) filters, air purifiers eliminate dust particles and pollutants from the air and purify the air circulated around us. The HEPA filter can remove about 99.9% of the contaminants bigger than 0.3 microns (the standard measure for microns). HEPA filters are capable of removing pet dander, smoke, pollen, dust and majority of impurities present in the air.

The positive side to using air purifiers

It is possible for air purifiers to clean the air making it up to 99.9% pure and hygienic. Even microns of 0.3 and bigger can be removed.

Some purifiers are specially designed to benefit asthma patients as they work to remove all allergy causing particles and dust leaving the air cleaner and purer to breathe.

When you are about to buy an air purifier ensure that your appliance is in sync with the Room Air Cleaner Certification Program standards listed. There is a standard set for air purifier appliances. Clean air delivery rate or CADR is a measure that evaluates the percentage of dirt free air in cubic feet.

These devices are very useful in helping to absorb second hand smoke and clear the air to the point of getting rid of the smell as well.

Iconic purifiers are of great aid to people who have health issues as they help in cleaning the tiniest particles in the air.

There are ozone purifiers which help to remove bad odors that linger in the air like cigarette smoke, heavy cooking smells, medicinal odors, etc.

Air purifiers help to reduce fire hazards from heating equipments; protect furnishings and preserve room dcor and reduce housekeeping and maintenance work.

However, air purifiers also have certain drawbacks. They need to be cleaned and maintained constantly and they might generate ions and ozone. The other point being some air purifiers are capable of getting rid of the contaminants but are not effective in eliminating odors, whereas others are good at removing odors but do not remove dust particles very well.

It has been researched that though air purifiers can purify the air to a great extent it is not easy to eliminate odors and gases from the air around us. Like in case of tobacco smoke, air purifier might eliminate the particles from tobacco smoke but it will not be able to get rid of the gas compounds in it. As a matter of fact, air purifiers could help to remove the smoke, yet the smell lingers in the air.

Everyone who considers purchasing an air purifier must know that such appliances come with their own limitations. A general rule as such for air purifiers does not exist. You must be fully aware of your requirement before you choose on the suitable device.

There are many reasons to use air purifiers in your home, from helping those with allergies breath easier, to fresh, clean smelling air: http://www.airpurifiers2day.info