I. Preamble 
In case your family doctor or a friend of yours tells you that you or your kid needs an air purifier, you will immediately start looking for a cost efficient unit. And only then you will see the huge range of types and models of air purifiers and diversity of cleaning technologies. The reason for this is that every unit performs its own function and has different operational characteristics. Nobody may say that this or that unit is either the best or the worst one, but there are models that can absolutely fit your individual application and cost efficiently. Very often people say they want a model with washable filters not to purchase the new ones. However, the truth is that air purifiers requiring replacement filters may cost much more within a long period of time. Another very important fact is that if you don’t purchase the greatest air purifiers that will tackle your problems and keep on doing so, on an ongoing basis, you may consider that you’ve wasted your money and still have some troubles.
II. The Best Air Purifiers at the Best Price
Air purifiers with washable filters are considered to be better for soaking up larger particles, for example, dust. They are not very good at soaking up minute blossom dust, mold spores, chemical agents, smells, bacteria or viruses. Such contaminants are better absorbed by HEPA technology. Moreover, the absorption capacity of true HEPA air purifiers is advised by almost all asthma and allergy medical experts.
However, the best air purifier at the best price is that one, which will eliminate your problem and will require such a maintenance that you can manage.
III. Other Considerations in Choosing the Best Air Purifiers
Look at your living space and make your mind where you spend the most of your time. Your sleeping area is very important in the process of purifying your house. It is recommended to primarily consider the greatest air purifiers for the bedroom. The human respiratory system decelerates during being asleep and in some cases cannot handle the inside contamination at night that it is able to handle at day time. Due to a bedroom air purifier your body will breathe pure airflow for a few hours and you will get up less congested and more invigorated. If you can afford to purchase only one unit and you want it to be sufficient to clean a bigger room, you may always roll it into the bedroom for night.
| 
