Today on the list is a comparison of two siblings from the Levoit Core series.
I’ll be comparing the specifications, performance, and real-life test results of the Levoit Core 400S and Core 600S.
These two outstanding air purifiers share a lot in common: both use a three-stage filtration system, come packed with advanced features, and delivered excellent results in our performance tests.
The Levoit Core 400S is designed for rooms up to 403 sq. ft. (37 m²), making it a great choice for bedrooms, offices, or medium-sized living rooms.
In contrast, the Core 600S is built for much larger spaces; it covers up to 635 sq. ft. (59 m²), which makes it ideal for open-plan living areas, large kitchens, or spacious living rooms.
When it comes to features, both models work with the VeSync smart app and include the AirSight Plus air quality sensor, auto mode, an air quality indicator, and several other useful options.
Our Verdict
I must admit, this has been one of the most challenging comparisons I’ve done in recent months. Both of these air purifiers achieved exceptional results in airborne particle removal tests and performed impressively across the board.
But in the end, there can only be one winner.
For most users, I believe the Levoit Core 400S is the better buy. It’s slightly more affordable to maintain, is quieter, and is perfectly suited for everyday use in bedrooms, offices, living rooms, and other mid-sized spaces.
On the other hand, I would recommend the Levoit Core 600S only if you truly need a purifier for large rooms—spaces where a bigger, more powerful unit like this is necessary.
If you have any questions about these two Levoit models, feel free to drop them in the comments below—I’ll be happy to help.
Specs: Levoit Core 400S Vs Core 600S
| Product Image |  31% off |  17% off |
| Manufacturer | Levoit | Levoit |
| Model | Core 400S | Core 600S |
| Dimensions (inches / cm) | 10.8 x 10.8 x 20.5 inches (27.4 x 27.4 x 52 cm) | 12.3 x 12.3 x 23.6 inches (31.3 x 31.3 x 60 cm) |
| Weight (pounds / kg) | 10.5 Ib (4.8 kg) | 13.7 lb (6.2 kg) |
| Clean Air Delivery Rate (CADR) | 260 CFM (442 m³/h) | 410 CFM (697 m³/h) |
| Coverage (4.8 ACH)
Room Coverage Explanation: ACH is a measurement used in indoor air quality management to indicate how many times the air within a defined space is changed/moved through the filter media.
For more details, visit our ACH calculator tool. | 403 sq. ft. (37 m²) | 635 sq. ft. (59 m²) |
| Performance Ratings Performance Ratings Score Summary: 8.3 - Average Score (100 products) 9.9 - Best Score (1 products) 1 - Worst Score (1 products) We use the Temtop LKC-1000S laser particle meter to test the particle removal efficiency of every air purifier. It measures PM2.5 (µg/m3), PM10 (µg/m3), Particles (per/L), and HCHO (mg/m3) in the air, and also calculates the AQI. You can read more about our testing methodology here. | ||
| Filtration Technology | Pre-filter, True HEPA Filter, and Activated Carbon Filter | Pre-filter, True HEPA Filter, and Activated Carbon Filter |
| Filter Replacement Indicator | Yes | Yes |
| Filter Life | up to 12 months | up to 12 months |
| Power Consumption
Power Usage Summary: Our extensive testing of 100 air purifiers revealed the following power consumption insights:
Check out our power consumption calculator tool. | 38W (24W European Model) | 49W |
| Operating Costs Ratings Operating Costs Ratings Score Summary: 8.8 - Average Score (100 products) 10 - Best Score (2 products) 1.7 - Worst Score (1 products) We measure the power usage at all speeds using an energy meter, after which we calculate how much it would cost to use the device at a particular fan speed for one month. For reference, we use an energy price of $0.12 per kWh. You can read more about our testing methodology here. | ||
| Number of Fan Speeds | 5 – Sleep Mode, Low Mode, Medium Mode, High Mode, and Turbo Mode | 5 – Sleep Mode, Low Mode, Medium Mode, High Mode, and Turbo Mode |
| Air Quality Sensor Air Quality Sensor Summary: Out of 100 air purifiers tested, only 50 have the air quality sensor. | Yes | Yes |
| Air Quality Indicator | Yes | Yes |
| Auto Mode Auto Mode Summary: Out of 100 air purifiers tested, only 51 have auto mode functionality. | Yes | Yes |
| Smart App Smart App Summary: Out of 100 air purifiers tested, only 29 have smart app functionality. | Yes | Yes |
| Voice Control Voice Control Summary: Out of 100 air purifiers tested, only 28 have voice control functionality. | Yes | Yes |
| Other Features | Display OffDisplay LockTimer | Light SensorDisplay InfoDisplay LockTimer |
| Noise Level (low – high) | 42.1 – 59.9 dBA | 43.9 – 68.5 dBA |
| Noise Ratings Noise Ratings Score Summary: 9.2 - Average Score (100 products) 10 - Best Score (1 products) 7.6 - Worst Score (1 products) We use a special noise measurement tool to test the noise level of the air purifier at all speeds. We measured the noise level on the dBA scale. You can read more about our testing methodology here. | ||
| Best Suited For | Living Rooms Kitchens Allergies Large Spaces Dust Smart Home Integration Air Quality Monitoring | Living Rooms Kitchens Offices Allergies Large Spaces Dust Smart Home Integration |
| Warranty | 2-year | 2-year |
| In-Depth Review | Levoit Core 400S | Levoit Core 600S |
| Price |
Performance Test – Comparison
We tested the airborne particle removal performance of both air purifiers in predefined rooms of different sizes.
The Levoit Core 400S has a CADR of 260 CFM (442 m³/h), making it suitable for spaces up to 403 sq. ft. (37 m²). The Core 600S, on the other hand, has a CADR of 410 CFM (697 m³/h) and is designed for much larger areas—up to 635 sq. ft. (59 m²).
Particle Removal Tests - Comparison
We placed the Levoit Core 400S and Levoit Core 600S in two separate tests and measured their performance using the Temtop laser particle meter.
To match their coverage, we ran tests in various room sizes and measured efficiency using the Temtop laser particle meter.
In a 560 sq. ft. (52 m²) room, the Core 400S improved air quality by 91%, while the Core 600S achieved an impressive 96%. The difference is notable, but keep in mind this space is larger than the 400S’s recommended coverage and slightly smaller than the 600S’s maximum capacity.
In a 320 sq. ft. (30 m²) room, the Core 400S improved air quality by 96%, confirming its excellent performance in medium-sized rooms.
Overall, both models delivered outstanding results in our tests. The Core 600S is clearly the better choice for large spaces, while the Core 400S stands out as the better all-around option for most users.
Smoke Box Test – Comparison
Besides the airborne particle removal tests, we also tested these two air purifiers in our smoke removal experiment.
We placed them in a glass box, filled it with smoke, and measured how quickly each device could clear it.
The Levoit Core 600S needed about 9 seconds to remove all the smoke, while the Core 400S took around 15 seconds.
I believe the difference in CADR is the main reason the Core 600S achieved better results in this test.
Noise Level Test – Comparison
Both Levoit models come with five fan speeds and an auto mode, and we measured their noise levels at each speed using a professional sound meter.
In sleep mode, the Levoit Core 400S produced 42.1 dBA, while the Core 600S measured slightly higher at 43.9 dBA. The difference became much more noticeable at maximum speed, where the Core 400S reached 59.9 dBA compared to the Core 600S’s 68.5 dBA.
Noise Levels - Comparison
Comparison of noise levels at all fan speeds between the Levoit Core 400S and Levoit Core 600S air purifiers.
You can check the full breakdown of noise levels at all speeds in the chart above or in the table below, depending on which format you prefer.
| Fan Speed | Levoit Core 600S (dBA) | Levoit Core 400S (dBA) |
|---|---|---|
| Sleep Mode | 43.9 dBA | 42.1 dBA |
| Speed 1 (Low) | 46.8 dBA | 43.6 dBA |
| Speed 2 (Medium) | 51.2 dBA | 47.8 dBA |
| Speed 3 (High) | 58.7 dBA | 55.4 dBA |
| Speed 4 (Turbo) | 68.5 dBA | 59.9 dBA |
Overall, the results are clear: the Levoit Core 400S is significantly better optimized for noise, making it the quieter option in everyday use.
Operating Costs – Comparison
I expected the Levoit Core 600S to be a noticeably larger power consumer than the Core 400S, but in practice, it’s surprisingly well optimized.
The Core 600S uses a 49W motor, making it one of the most efficient air purifiers in terms of CADR-to-power ratio. In comparison, the Core 400S uses a 38W motor.
Monthly Power Consumption Cost - Comparison
Comparison of monthly power consumption costs for the Levoit Core 400S and Levoit Core 600S air purifiers at all fan speeds.
If you were to run both purifiers at maximum speed, 24 hours a day for an entire month, the Core 600S would add about $4.22 to your electricity bill, while the Core 400S would add around $3.06.
In addition to energy costs, both models have similar replacement filter lifespans, and the price difference between their filters isn’t significant.
| Fan Speed | Levoit Core 600S (W + $/month) | Levoit Core 400S (W + $/month) |
|---|---|---|
| Standby | 1.2W ($0.1) | 0.9W ($0.07) |
| Sleep Mode | 4.1W ($0.35) | 3.3W ($0.28) |
| Speed 1 (Low) | 7.3W ($0.63) | 5.8W ($0.5) |
| Speed 2 (Medium) | 10.9W ($0.95) | 8.8W ($0.77) |
| Speed 3 (High) | 20.4W ($1.78) | 16.1W ($1.41) |
| Speed 4 (Turbo) | 48.2W ($4.22) | 35W ($3.06) |
Overall, both devices are very affordable to own and operate. Still, the Core 400S edges ahead as the more economical option since its lower power draw is noticeable across all speed levels.
Features Overview
Like many other Levoit air purifiers, Core 400S and Core 600S have a lot of advanced features, with a majority of them equally available on both devices. Let’s get into details together.
Control Panel
The Levoit company has made it easier for its users to handle these two and many other air purifiers. A vast majority have pretty much the same Control panel layout. There is a slight difference between the Core 400S and Core 600S, whereas I give a slight advantage to the upgraded look of the Core 400S. The reason is that sometimes the silver color of the panel distracts you from seeing the buttons you want to press.
Both appliances have the PM2.5 particle amount displayed on their control panels, which I find a great feature. However, since both are connectable to the Smart App, you can monitor and control all the features straight through the app without bothering of doing it manually across the panel.
Air Quality Sensor and Indicator
One of the great features that the Levoit Core 400S and 600S have in common is the AirSight Plus laser particle sensor, located on the back side of the appliances. A very precise technology measures the real-time quantity of PM2.5 particles and displays it on top of the device across the Control Panel. That is one way you can monitor the level of pollution.
Along with the sensor comes the air quality indicator, which is also located on top of both devices. Depending on the air quality measured by the sensor, the indicator will light up in color blue, green, orange, and red.
Since both Core 400S and 600S have smart app connectivity, you can monitor the air quality at any time by using the VeSync app, which we will discuss later on.
Auto Mode
As expected, both Levoit air purifiers have the Auto Mode feature. A combination of the AirSight Plus sensor and the Auto Mode will get the best results from your air purifier, following the real-time air quality and pollution.
You can set the Auto mode manually through the control board, but you can also use the Smart app. This way you can be more precise about what you demand from your air purifier.
This is the part where Levoit Core 400S and Core 600S differ, in a way. With the use of the VeSync App, the Auto mode of the Core 400S can be set to silent or efficient mode, whereas the Core 600S gets the extra ECO mode.
Perhaps you can figure out the purpose of each of these modes, so I won’t go into details, which you can find in the individual reviews.
The only thing you cannot combine is the Auto mode with the Turbo mode, which is quite logical, would you agree?
Sleep Mode
Sometimes air purifiers come with the Sleep mode as their lowest/first fan speed, but this is not the case. Both Core 400S and Core 600S have the Sleep mode as a fan speed that runs independently. But the most important thing is both appliances are surprisingly quiet when set to this mode.
If you prefer to use your air purifier in the bedroom while you sleep then these two air purifiers will not disappoint you. Not only do they run as silently as possible, but also without a single indicator ON.
Light Sensor (600S)
Having a Light sensor, so far, has been a privilege for several air purifiers I have tested. Levoit Core 600S is one of them. To be able to use it, you must activate this option through the VeSync app. As the name says, this sensor is light-sensitive. It means that once you turn it on, it will automatically start to evaluate the amount of light in the room. If the room is entirely dark, the sensor will activate the display-off option and dim all other indicators on the device.
Once you turn the lights back ON, the air purifier returns to its previous setting.
Timer
No matter how proficient you are at multitasking sometimes you really need a little help. This built-in feature allows you to set the appliance’s working hours between 1-12h, after which it shuts off. Both, the Core 400S and Core 600S have this option. You can set the time within this range by using the button on the Control panel, but through the VeSync smart app too. That way you can adjust the Timer between 1-24h. This option works for both Levoit appliances.
VeSync App
The VeSync Smart app is available for Android and iOS devices, which means you can use voice commands through Amazon Alexa and Google Assistant.
Levoit Core 400S and Levoit Core 600S are connectable to the VeSync app, which is a big deal, trust me. You see, this app is more than a simple remote controller. So far it has been upgraded so it provides loads of information. Most of the information is only available through the app, without being displayed on the control panel.
Filter Reset Indicator
Having a Filter reset indicator means one less thing to worry about. Once the filter wears out, this indicator will let you know. You can find this option available on the control panel, or you can monitor it through the Smart app too. It will give you a detailed percentage value.
Lock Screen
Locking the display of your air purifier may seem like an unnecessary thing to do, but trust me, you will need it eventually. If you have a furry pet, a noisy friend, or a curious child this is the best way to protect your air purifier from inevitable maneuvers. Just a simple 3-second button press activates this option, and your Core 400S or Core 600S will be in the ‘’off-zone’’. The same procedure stands for turning off this feature.
Screen Off
Having a Screen or Display Off option can be helpful if you intend to use your air purifier in the bedroom. What this option offers is the ability to dim all the indicators except the Filter Reset Indicator and all the lights on your device. This way nothing will disturb your sleep.
However, since both Levoit devices, Core 400S and Core 600S, have the Sleep mode feature, you can easily use that instead of the Screen off option.
Airflow
Belonging to the same air purifier family doesn’t necessarily mean appliances should share the same shape. Still, Levoit made sure that the filter shape, along with airflow, remains pretty much the same. While motors in both Core 400S and Core 600S are in the upper part, the bottom part of the appliances is where the air inlets are located. They are spread all along Core 400S and all four sides of Core 600S. Once the air runs through filters, it gets released on the upperside grills.
Warranty
Like most Levoit appliances, you will be covered with a 2-year warranty, providing you register on the Levoit website straight after purchase. Though, you may think you need more coverage, rest assured that both Core 400S and Core 600S have passed the durability and reliability tests many times before. Simply said, this is the company you can trust in terms of customer relations.
Filtration Technology
As you can see for yourself, the Levoit Core 400S and Core 600S have almost the same shape, with Core 400S being just a little more roundish. Filters within are also cylindrical, hollow in the middle, and positioned at the bottom part of the appliance.
It is a 3-in-1 filtration technology within both air purifiers, consisting of a Pre-filter, a True HEPA filter, and an Activated carbon filter. The most important thing I must point out is that both appliances are ozone-free, which makes them safe for the environment.
Another relevant thing to know is that none of the filters in both 400S or 600S is washable, so don’t try to clean them with water.
Pre-filter
As the first line of defense, a pre-filter captures the largest particles such as dust, lint, fiber, pet hair, and pet dander. This way a True HEPA filter is safe from all the grand pollutants in the air we inhale. It is a great way to prolong the life of other filters in line.
As I already said, you must not wash the pre-filter, but you do need to keep it clean. Simple vacuuming or wiping with a wet cloth will do the work, and you can repeat it every two to four weeks or even more often if you feel the need.
True HEPA filter
A True HEPA filter is the coolest of them all and gets most of the credit for outstanding performances of both Core 400S and Core 600S. By removing at least 99.97% of airborne particles of 0.3 microns (µm) such as fine dust, smoke particles, pollen, and pet dander, this filter is the essence of every highly-ranked air purifier.
Activated Carbon filter
To have a good activated carbon filter is to have odor-free air. If you or your guests like to smoke, or you are an enthusiast in cooking, but the odors bother you big time, this filter will help you. The same stands for pet odors.
Since both air purifiers are a part of the Levoit family, they both share the same exclusive ARC Formula™, a customized yet, effective formula for neutralizing cooking and pet odors by preventing oversaturation of the activated carbon filter.
How to replace filters on both of these devices?
First of all, both Core 400S and Core 600S have filter reset indicators, which puts you one step ahead of time. When the replacement time comes, you will be notified by this indicator, and the rest is up to you. As far as the Core 600S it will take between 6 to 12 months before the filter needs a replacement. Mostly depends on how often you use it and how well you maintain it. The same thing stands for Core 400S, which will give you more time since it can last up to 12 months.
However, don’t let this information stop you from regularly cleaning the pre-filter. Trust me, regular vacuuming and wiping with a wet cloth will keep your appliance longer effective.
Did you notice any difference in the PM2.5 reading between the units? i own both the 600 and the 400 and for testing i placed them close to eachother in the same room after cooking – the 600 was showing over 50 on the screen while the 400 showed a much lower count at around 07
Two Questions please. #1 Where should the air filters be placed… ( for best results/performance) on top of furniture or ground level? #2 I am caring for my elderly 95yrs young parent and want to have extra clean air for their lung health in their bed room (nice sized room) do you think it’s over kill to use the 600s in a bedroom or would the 400s be sufficient? Thank you!! 🙂
Hi! First, I recommend checking out my article on air purifier placement. Or, if you prefer, you can watch the video guide instead.
As for the device, I think the Core 600S would be overkill for a bedroom. I would rather go with the Core 400S or possibly the Vital 200S.
Thank you Milan!! It’s greatly appreciated. Hope you enjoyed a Happy Thanksgiving.
Best Regards,
Mack
Hello,
What do you think about the fact that Levoit had to remove references to using a True HEPA filter in their materials?
Is it possible that the EU versions still use a real HEPA filter if they continue to advertise it here?
Thanks!
I think that was a move that significantly degraded Levoit and lowered its reputation in the eyes of many consumers. However, we have never based our tests and opinions on what manufacturers claim in their marketing materials. All results, ratings, and recommendations are based on the tests we perform, which you can read more about here.
Still, Levoit undoubtedly has some of the best air purifiers on the market, especially for home users.
However, for more serious filtration, medical-grade filters, and similar needs, I believe there are much better and more proven options — for example, the IQAir HealthPro Plus (we’ve tested it, but I haven’t yet written and published the review on the website).
How many air purifiers are recommended for a 989 square feet apartment with 2 cats?
I would start with just one and place it in a strategic location—where the cats spend most of their time or near the litter box. If that doesn’t help, then I would get one more device.
I’ve heard about a high pitched whine/noise with the 400 at lowest speed – did you notice this at all?
I haven’t noticed that so far, even though I have used the Levoit Core 400S for period of time.
Hi Milan,
I am going to buy one of them however I found 600 version uses “high efficiency” active carbon filter. Right?
These two use identical filtration technology, with one slight difference: a bit larger filter on the Core 600S.
We are awaiting the delivery of our Levoit 400S Plasma today and this morning my husband and I were debating if 600S would be better. It is a larger space so we are leaning towards 600S, but my question is about the plasma technology- do you know much about it- would it be worth it? I searched your site/videos but didn’t find anything on the Levoit plasma technology. Thanks! 🙂
The Plasma Technology releases negative and positive ions that bind with airborne contaminants and break them down. However, Plasma Technology produces small amounts of ozone as a byproduct, which is why some people avoid this or similar technologies. The good thing is that the Levoit Core 400S PlasmPro is CARB certified, meaning it produces ozone in allowed amounts and shouldn’t be harmful to users.
Personally, I would go with an air purifier without Plasma technology because a high-quality True HEPA filter, such as the one Levoit uses, will be enough to remove all harmful particles found inside the home.
Good morning.
My son has moved his bedroom to the basement – the basement is divided into 2 rooms…his room and the utility room. The entire basement is about 1,200 square feet and his bedroom is half of that. Which purifier would you recommend – 400 or 600?
Any advice would be helpful.
Thank you,
Luke
I would choose the Core 600S since it has a much larger airflow. It should easily handle a 600 sq. ft. bedroom.
I currently have both the Levoit 400S and 600S in my condo. My condo is about 1200sqft with approx 600sqft open concept with a cathedral ceiling. My bedroom is right off of the living area and is about 250sqft with 8ft ceiling. Could I get away with ONLY using the 600S on auto in the main living area and it benefiting the bedroom as well?
In my opinion, it would be best if you keep both air purifiers. However, you can do some tests to see if just the Levoit Core 600S can effectively deal with the air pollution in your place. So, try using only the Core 600S for a few days while constantly checking if it works.
The only potential problem I see here is the larger condo and cathedral ceiling, but if your place isn’t overly polluted, then just one air purifier might work.