Get a Levoit Core 300 $99 $84.99 Our top pick for most people in need of an air purifier. If you want it a little bit cheaper, you can also get the Levoit Core 300 directly from the Levoit website for $84.99. An air purifier is best viewed as one part of a broader toolkit for your living space. For people with allergies, asthma, or other respiratory issues, the difference can be noticeable quickly.​Are air purifiers good for smoke and mold? Air purifiers can’t eliminate all smoke within your home, but air purifiers do a great job of mitigating the effects of wildfire smoke within a sealed home environment.