People do not open their windows as much as they did before air conditioning was commonly used.  In the winter, houses are shut up even more.  This is a part of the reason that the air quality in homes is generally many times worse than it is outside.  Buying good air purifiers can improve the situation. 

One thing to look for in buying air purifiers is a size that will clean the air in your room.  Some air purifiers only work well in a small room or office.  In fact, there are certain air purifiers that are meant for the very small space in your car.  Other air purifiers can easily cover a large room. 

Consider what types of indoor air pollution the air purifiers will capture.  Most will clean smoke, dust, pollen, and pet dander from the air in the room.  Some also remove dust mites from the air.  A special type of air purifiers has the capability of washing the indoor air of mold and bacteria.  A UV light does this job.  If you are concerned about germs, especially if someone in your household is prone to becoming ill easily, this is a great type of air purifiers to get.  Another feature of some air purifiers is the ability to remove volatile organic compounds, like paint and carpet fumes, from the air ? perfect for a new or remodeled home. 

Check out how easy the air purifiers will be to clean.  Some are refreshed with the simple wipe of a cloth over a blade or collection plate.  Others require new HEPA filters from time to time.  It is also important to note whether the air purifiers use little power, since you will be running them constantly. 

Air purifiers are essential to a clean home environment.  Finding the right ones may be confusing at first, because they do not look very much different from each other.  Compare the features and you will know what you are getting.