With increasing sensitivity to allergens and rising pollution levels, air purifiers have become essential appliances. According to Bloomberg, the air purifier market will likely exceed $7 billion by 2032. This is not surprising at all, given how polluted the indoor environment can be, with the principal sources being dust, fires, car emissions, and cooking. Today you can find all kinds of purifiers, so here is all you need to know before buying one:  Top air purifiers Here are some of the best options for your home: Levoit LV-H132 One of the top-rated purifiers, the LV H132 by Levoit, is compact and small, with a capacity for filtering up to 129 square feet. It has a HEPA filter (or high-efficiency particulate air filter) capable of eliminating 99.97% of pollen, dust, odor, smoke, pet dander, and mold spores. It promises an outstanding performance backed by features like a three-stage filtration arrangement consisting of a HEPA filter, an activated carbon filter, and a pre-filter. Additionally, it comes with three fan settings, allowing you to control the purifier’s volume and speed. Furthermore, it is so tiny that you can easily place it on your desk. Levoit VeSync Core 400S Smart air purifier While most top purifiers on this list effectively eliminate pollutants from the air, the VeSync Core 400S by Levoit goes one step further and allows you to check the air quality indoors as well as outdoors.