Selecting the best out of many air purifiers can be a confusing task. As the equipment and its working are crucial for allergy and asthma patients and in ensuring a secure atmosphere, extra care should be taken with the final choice. Going through certain reliable air purifier reviews can help the buyer in such cases. Basically the purifiers can be of different types like HEPA filters, ultraviolet, ion generating, ozone generating etc. Highly popular equipment in this aspect is the Winix PlasmaWave 5300 model. The device offers a good air flow and removes the contaminants present in the air with its three step purification technique and is thus is a best air purifier. It works at a relatively low noise level and is suitable for big rooms. The device works in automatic mode with a digital sensor adjusting the aped of the air fan. The Austin Air HealthMate is famous for its long lasting filter capacity which does not require frequent cleanings and removals. It is available in different shades too.