If you can't open a window for whatever reason, an air purifier can help make the air in your home a bit more comfortable. One of our favorites, the Levoit Core 400S air purifier, is on sale for $187 thanks to the Amazon Spring Sale. While that's not a record low we've seen it as low as $177 last year it's still a good discount on one of the most convenient air purifiers for large spaces. Weve featured Levoit in our list of the best air purifiers for its strong performance and smart features. The Core 400S can cover rooms up to 1,980 square feet using a three-stage filtration system to capture allergens, dust, pet dander and smoke. It also includes a smart sensor that adjusts fan speed based on air quality, so youre not running it at full blast when you dont need to. One of the Levoit Core 400S biggest selling points is its low noise output, which makes it a good fit for bedrooms or home offices. If you need to knuckle down and get some work done without distraction whilst keeping your rooms air clean and fresh, even at higher speeds, it stays relatively quiet compared to bulkier purifiers. It also supports smart controls via the VeSync app, allowing you to tweak settings, set schedules or monitor air quality from your phone. If you have a smart home ecosystem in place, you can connect the purifier to third-party voice assistants like Alexa and Google Assistant an added layer of convenience that allows you to control the Core 400S with simple voice commands. Its 360-degree filtration system uses activated carbon to remove gases and odors, while an efficient middle filter captures 99.97 percent of pollutants as small as 0.3 microns. The built-in air quality sensor continuously monitors pollution levels, automatically adjusting performance as needed. You can track real-time air quality data on the LCD screen or through the VeSync app, which is handy (and interesting) to have access to at all times. At night, sleep mode keeps things extra quiet and subtle, dimming the display and operating at the lowest settings or you can turn off the display completely for total darkness. If youve been looking for an air purifier that can handle larger spaces without taking up too much room, this deal is worth considering, saving you over $30 on its usual price thanks to the Amazon Spring Sale.This article originally appeared on Engadget at https://www.engadget.com/deals/levoits-core-400s-air-purifier-is-33-off-for-the-amazon-spring-sale-133052543.html?src=rss