We now know that the 2025 edition of Amazonโs blockbuster Prime Day sales event will start on July 8, and itโs set to be bigger than ever as it will run for four days. But you donโt need to wait until then for tasty deals. There will be plenty in the lead up to the event, including this one for the Levoit Core 400S air purifier. At $183, the device is $37 off. Itโs not quite the lowest price weโve seen for this model. However, itโs not too far off that mark of $176.
The Levoit Core 400S is our current pick for the best air purifier overall. Sure, it might not have the prettiest design of all the options we have tested and the companion app might have a little too much going on. But the Core 400S does its job and does it well.
Levoit
The Levoit Core 400S has dropped down to $183, which is almost a record-low price.
$183 at Amazon
This smart air purifier is slated to clean the atmosphere in spaces of up to 1,733 square feet in as little as one hour. The Core 400S has a cylindrical shape with vents at the top and a touch display that shows air quality readings. Youโll be able to get a sense of the current air quality in your space at a glance with a color-changing ring that will light up in blue, green, orange or red. The 360-degree filtration system is said to be capable of capturing over 99.9 percent of pollutants as small as 0.3 microns, such as dust, pet dander and pollen.
There is an auto mode that should suffice for maintaining air quality, but the Core 400S is compatible with Alexa and Google Assistant voice controls too. The fan isnโt too loud, even when itโs operating at maximum speed โ the volume topped out at 62dB in our testing. Meanwhile, at $50 each, the air filter replacements arenโt too expensive compared with those from many of Levoitโs competitors.

