It’s always a good time to invest in an air purifier, but in the summer, when seasonal allergies can force sufferers to keep the windows closed, they’re especially useful. And right now our favorite overall air purifier can be picked up for 17 percent off when purchased from Amazon. Down to $183 from its usual price of $220 (the same deal that was running during Prime Day), the Levoit Core 400S Smart Air Purifier reigns supreme in our guide thanks to its easy on-board controls, relatively quiet fan and, crucially, solid performance. This smart air purifier can clean the atmosphere in spaces of up to 1,733 square feet in no more than an hour. It’s also fairly cheap and easy to replace the filter if needed. There’s an auto mode that ensures the air quality is maintained, but it plays nice with Alexa and Google Assistant too. All that said, don’t buy Levoit’s air purifier if, for whatever reason, you’re fashion-conscious about your household appliances. This barebones white cylinder is as un-fancy as it gets. Amazon is also running a deal on Levoit’s Core 300S, which is our top choice for small rooms. It’s basically a smaller version of the aforementioned 400S, and has a lot of the same things in its favour. This model is 10 percent off right now, down to $135 from its usual list price of $150. This is the best price we’ve seen for this model all year. If you only need an air purifier for even smaller rooms (like a bedroom), the Levoit Core 200S is $10 off with Amazon right now. We haven’t tested this model, but given the strength of the rest of the range, you can be confident it’ll likely be up to the job. Follow @EngadgetDeals on X for the latest tech deals and buying advice.This article originally appeared on Engadget at https://www.engadget.com/deals/our-favorite-smart-air-purifier-is-currently-17-percent-off-154251338.html?src=rss