Levoit Core 400S Air Purifier: Trusted Review & Specs

The Levoit Core 400S doesn’t pack anything game-changing right now, but it’s the start of something bigger. Yes, it is. As the latest model of the most successful series of Levoit, the Levoit Core 400S is a brave step into the mid-range, which was accomplished by the Levoit LV-H133 in the past. But this time, Levoit is the top-selling brand, and I believe it will consolidate the position of the new Core 400S. Ready for the most trusted Levoit Core 400S Review?

Levoit Core 400S ranks A- in our air purifier ranking list. We give the biggest and most thorough database of air purifier reviews in the world.

Update: The new Levoit Core 600S is out, which is the current flagship of Levoit. Also, it seems there has been a new air purifier called Levoit PlasmaPro 400S, which features a totally different air filtration system from Levoit tradition. There is a new release of the Levoit Vital 200S, which we hope to review as soon as possible.

In Breathe Quality, we have reviewed all air purifiers under these sections. Also, we guarantee that:

  • We provide honest reviews (both pros and cons) so that everyone can make the best decisions.
  • We do not (and never will) exaggerate one product just to let you click the links and buy that product blindly.


levoit core 400s review

  • Solid performance
  • Future-proofed with Smart features
  • Better CADR rating
  • Upgraded laser sensor

  • High annual filter cost

Levoit is confidently the #1 selling air purifier brand in the US right now, after many rewards and recommendations for the famous Levoit Core 300 (of which Breathe Quality was proud to be the first to mark it as “the best budget air purifier” up until now). The Core Series of the Levoit family completely overshadows the original Levoit LV-H132 and Levoit LV-PUR131S, and that’s the sign of a big change. In this Levoit Core 400S Review, we will find out whether the Levoit Core 400S will be the best “under $200” air purifier or not.

Levoit Core 400S Price

It’s easy to dismiss the Levoit Core 400S if you’re a hardcore fan of the Levoit brand, especially when you consider it as a smaller Levoit LV-H133 with more smart features, or you just look at the mini Levoit Core 200S as an option for the bedroom.

The smart features, on the other hand, are rapidly spreading across the low-end, with the entry-level Blue Pure 411 Auto and Blue Pure 311 Auto topping every list of the best air purifiers. Also, the Winix AM90 is groundbreaking for offering high-end features at just a fraction of the price. Certainly, neither the old LV-H133 nor the Levoit LV-PUR131S are adequate competitors.

So, meet the new Levoit Core 400S, an air purifier that combines everything you want in a more expensive device while remaining powerful and affordable. How much does it cost? Levoit Core 400S starts at $219, but I assure you that you will get a better deal from us as usual, dropping the price to only $189.

At this price point, the Levoit Core 400S is certainly a good option to consider over the Winix AM90 and/or Coway AP-1512HH. Check out all the reviews before you buy.

Top Levoit Core 400S deals right now

Levoit Air Purifier for Home, Large Room, Smart Wi-Fi and Alexa Control. Core 400S, White.

Utilizing powerful VortexAir 3.0 and QuietKEAP technologies to ensure a powerful yet quiet air cleaning. Comes with Laser dust sensor. CARB, and FCC certified, as well as ETL listed and CA Prop 65 compliant.

Related post: Best air purifier 2023.

Levoit Core 400S Design and Size

The Levoit Core 400S’s design hasn’t radically changed from the last few versions of the Core Series, and it’s only bigger. However, with the dimensions of 20.5 x 10.8 x 10.8 inches, this air purifier is indeed smaller than both the LV-H133 and LV-H135.

As mentioned, the Levoit Core 400S has Core’s signature cylindrical shape and a real 360-degree air inlet, something that you’ll miss from the LV-H133. Its bottom-to-top airflow system concept is popular, and it will utilize so-called VortexAir 3.0 Technology for more effective air circulation. As a result, it can maximize fan power in a more compact form than the old Levoit devices.

At the moment, Levoit Core 400S has only one version in white, but I believe that Levoit will quickly add the black version after this review. It happened with the famous Levoit Core 300 in the past. Okay, here is the black version of the Levoit Core 400S.

levoit core 400s review

There is even a new red version for the Levoit Core 400S, with a slightly different logo. It seems Levoit is emphasizing this more and more in the design of its new air purifiers.

The top of the air purifier is identical to the LV-H133, with a (in my opinion) more sleek control panel at the center. It also has a premium feel, and I must admit that I prefer using the control panel over a smartphone app for management.

Just like other Levoit Core air purifiers, you need to flip the device over and remove the filter cover to replace the air filter. Luckily, the Levoit Core 400S is on the light side, as it weighs only 11 lbs. There is a handle behind the air purifier to help you lift the device easier.

Related post: Best air purifiers for bedroom.

Levoit Core 400S Filters

The most important criteria for determining the power of an air purifier are its air filters. We will basically look at how many filters it has and what types of air filters are used. The Levoit Core 400S follows Levoit’s “only mechanical filter” motto, so I am not surprised to see (again) the 3-stage air cleaning system.

  1. Pre-filter – Using the fine preliminary filter, Levoit Core 400S is able to capture most of the large objects at the first stage of its air filtration process. In addition, the pre-filter is vacuumable and can be reused for a long time.
  2. True HEPA filter – Levoit Core 400S uses a H13 True HEPA Filter to reduce 99.97% of as small as 0.3 microns of allergens, virus particles, pollen, and bacteria particles.
  3. Activated Carbon Filter – This Activated Carbon filter captures and neutralizes smoke and odors from the kitchen, your pets, or even the outdoors. Levoit ARC formula for high-density activated carbon filter.

For everyone who knows Levoit air purifiers, the 3-stage air filtration system is the rudimentary method of air cleaning from this US company. It is the quickest way to get the certification of the CARB (California Air Resources Board) for air purifiers that meet an ozone emission concentration limit of 0.050 parts per million (ppm).

Levoit calls their new HEPA filter “HEPASmart technology,” which is kind of a gimmick like the HEPASilent technology of Blueair. However, HEPASmart is first named in the new Levoit Core 400S, and despite the specs, I believe the core H13 True HEPA filter of this air purifier is just the same as any other old Levoit devices.

levoit core 400s review

Source: Amazon.com

And the Levoit Core 400S did really well for the stress test, as it can clean 99.92% of all airborne particles down to 0.3 microns in a space of 200 square feet after 1 hour. Yes, you may argue that it is still behind competitors like the Coway AP-1512HH, Winix AM90, Blue Pure 311 Auto, or Honeywell HPA300, but you need to see that the difference is really, really small. Given its more affordable price tag, I can say the performance-to-value ratio is quite similar.

levoit core 400s review

The new Core 400S-RF is the filter replacement to use. Thanks to the VeSync app, you can keep track of when to replace the air filter, typically every 6 months.

Related post: Best air purifiers for allergies.

Levoit Core 400S Room Coverage

Levoit Core 400S is a low-range air purifier with large room capability. As you can see, the suggested room coverage of this air purifier is up to 403 square feet, which is suitable for the living room of many large houses in the US.

levoit core 400s review

Source: Amazon.com

The ACH of Levoit Core 400S is 5X. Thanks to its new VortexAir technology, the air purifier can purify the recommended space up to five times per hour.

The CADR of Levoit Core 400S is 247 Dust/ 244 Smoke/ 269 Pollen (cfm). Such high fan power is very competitive in low-range segment, rivaling the best Coway AP-1512HH and Winix AM90.

Related post: Best large room air purifiers.

Levoit Core 400S Sound

The new QuietKEAP technology of Levoit is what makes this device significantly more exciting than older models from this company. Using rubber pads to absorb sounds made by the fan, Levoit Core 400S can trim the noise level lower, even with higher fan power. Yes, at the lowest speed, the noise level is measured at just 24 decibels (dB).

The highest noise level of this air purifier is just 52 decibels. Levoit Core 400S has a much lower noise level than a household refrigerator, so I believe you won’t notice the noise anyway.

Related post: Best air purifiers for baby.

Levoit Core 400S Power Consumption

A good air purifier is designed to run for a long time to be more efficient, making the high-priority question in Breathe Quality: “Do air purifiers use a lot of energy?” To know the answer, we will need to check the power consumption of this air purifier.

Levoit Core 400S has a rated power of 38 watts, which is the average of LV-H133 and LV-H135. Such energy savings are on top compared with the best competitors; they only lose by a portion of the best Blue Pure 311 Auto.

If you already own a Levoit Core 400S, you can be sure that it will cost you just $14 to run the air purifier at least for 8 hours per day.

Related post: Best air purifiers for pets.

Levoit Core 400S Additional Features

The top reason to buy the Levoit Core 400S above any other air purifiers at this moment is its smooth and intuitive Smart Control. Thanks to the VeSync app, you can control the device and monitor the indoor air quality. Developed since the Core 200S, the Levoit Core 400S is the smartest air purifier from this company up until now. You can also use voice control to command the device with Alexa or Google Assistant.

levoit core 400s review

Source: Amazon.com

Welcome back the laser air sensor from the flagship Levoit LV-H134; however, this time the air sensor can only detect dust particles. With the Smart Sensor (named Airsight Plus) on, the Levoit Core 400S can scan your air for airborne particles and automatically adjust the fan speed to clean them out.

Other than that, the Levoit Core 400S still has any additional features you could have had from its predecessors, like a timer, child lock, or a simple yet necessary LED indicator for filter replacement.

Related posts:

1, Best air purifiers for smoke.

2, Best air purifiers for dust.

3, Best air purifiers for mold.

Levoit Core 400S Customer Service

Levoit is a brand that strongly focuses on its customers and community. If you buy one of its products, you will receive everything you need to set it up and run it. Negative customer service reviews are almost nonexistent.

There is only one thing: it gives a basic 1-year warranty. To get an additional 1-year warranty, you need to have some free registration. It is easy, and everyone is willing to sign up for another year of warranty. It seems newer products are getting a 2-year warranty by default, including the new Levoit Core 400S.

You can contact Levoit freely from Monday to Friday via phone at 888-726-8520 or via email at support@levoit.com.

Top Levoit Core 400S deals right now

Levoit Air Purifier for Home, Large Room, Smart Wi-Fi and Alexa Control. Core 400S, White.

Utilizing powerful VortexAir 3.0 and QuietKEAP technologies to ensure a powerful yet quiet air cleaning. Comes with Laser dust sensor. CARB, and FCC certified, as well as ETL listed and CA Prop 65 compliant.

Our verdict

The Levoit Core 400S is clearly a good candidate for the list of the Best Air Purifiers. However, it is quite tough to decide between this air purifier versus both Coway AP-1512HH and Winix AM90. The Levoit Core 400S may have better smart control than the Coway and a more stable connection with its app than the Winix, but it has lower performance than both of these devices. It also doesn’t have the gas sensor that the Winix AM90 has.

Still, it is an amazing air purifier. And when I say  perhaps I will consider it one of the best air purifiers. Let’s wait another 3 months. We still consider the Blue Pure 311 Auto as the best air purifier for a reason: it’s more suitable for a bedroom than the Levoit Core 400S.

Levoit Core 400S Air Purifier: Trusted Review in 2024
Levoit Core 400S Air Purifier: Trusted Review & Specs

Levoit Core 400S Reviews and Specs (Air Purifier Trusted Reviews in 2024). ✓ Cleaning Power: True HEPA ✓ Smart Control ✓ Value: 4.3/5 ✓ Certified Review

Product Brand: Levoit

Product Currency: USD

Product Price: 219

Product In-Stock: InStock

Editor's Rating:
  • Performance
  • Features
  • Annual Cost
  • Design
  • Price


An excellent air purifier from Levoit, and again, a blind purchase won’t disappoint you.