When it comes to buy an air purifier, you need to consider several features to find the best air purifier for your room. The latest air purifiers come with a variety of filters, remote controls, digital panels, Wi-Fi function and more.
Even if you choose all the right features and buy one of the more expensive models, it can be completely useless if you do not consider the cover. Some manufacturers sell several models in different room sizes, while others offer popular models in medium rooms.

How to choose an air purifier?
There are several features to consider when choosing an air purifier for dust.
Clean Air Delivery Rate (CADR): Refers to the amount of suspended particles that a unit can filter in a given period of time and must match the size of the room in which the person is using.

Target applications: Some air purifiers work on particle removal, while others focus on gas. Those looking for an air purifier to control dust should look for a filter that is specifically designed to remove dust.

Filters - Some devices have multiple filters, so you need to know when to replace them.

Fan speed: There are fan devices that adjust the speed according to the amount of pollutants. It also slows down at night to prevent people from sleeping.

Winix 5500-2 has the highest overall performance with high scores for the removal of particles and chemicals, ease of use and low cost of filter replacement.

High scores for filtration performance are obtained by combining several filter steps. The washable pre-filter prevents larger items such as pet hair from clogging quickly with other filters. Carbon filters absorb chemical contaminants such as VOCs from paints and cleaners, making them washable and extending their service life. Below is a real HEPA filter that has been tested for fine particle adsorption. Finally, the Plasmawave phase produces reactive ions that decompose chemical contaminants.

I love automatic functions. The air sensor adjusts the performance with the air quality, the light sensor darkens the control and when the room is dark, it lowers the fan from sleep mode. Washable filter stage and relatively long filter life also reduce the cost of annual filter replacement like for winix a231 air purifier.