Levoit Core 400S Vs Coway AP-1512HH – A Tough Choice!

Levoit Core 400S and Coway AP-1512HH are medium-sized air purifiers, very reliable, and with some exciting features. Since Levoit released the Core 400S model, I have received many inquiries about whether this air purifier is a better buying option than the Coway AP-1512HH.

Honestly, in my opinion, Levoit looks much more modern, has some advanced options that aren’t included in Coway, and is slightly more affordable to use. But, could a modern look, a better price, and cheaper maintenance be enough for Levoit to beat Coway, or does it take a little more severe trump card to win? Read the article thoroughly and find out.

Levoit Core 400S and Coway AP-1512HH - Hands-on comparison
Photo: Airpurifierfirst.com / Milan Antonic

Regarding room coverage, I would like to say that Levoit covers rooms up to 403 sq. ft., while Coway covers spaces up to 361 sq. ft. Almost identical room coverage, outstanding performance, and many advanced options are just some of the features common to these two air purifiers.

Keep reading and find out what makes the Levoit Core 400S better than Coway, whether the innovations on this model can help it cope with an already proven air purifier such as Coway, and of course, which air purifier I’m choosing as the best buy.

Specifications Comparison

Coway AP-1512HH Air Purifier Levoit Core 400S Air Purifier
Manufacturer Coway Levoit
Model AP-1512HH Core 400S
Dimensions 16.81 x 9.65 x 18.30 inches (42,7 x 24,5 x 46,5 cm) 10.8 x 10.8 x 20.5 inches (27,4 x 27,4 x 52 cm)
Room Coverage 361 sq. ft. (34 m²) 403 sq. ft. (37 m²)
Performance Ratings
Filtration Technology Pre-filter, Deodorization Filter, and True HEPA Filter Pre-filter, True HEPA Filter, and Activated Carbon Filter
Filter Replacement Indicator Yes Yes
Filter Longevity up to 12 months up to 12 months
Power 77W 38W (24W European Model)
Operating Costs Ratings
Working Modes 3 – Speed 1, Speed 2, and Speed 3 5 – Sleep Mode, Low Mode, Medium Mode, High Mode, and Turbo Mode
Air Quality Sensor Yes Yes
Air Quality Indicator Yes Yes
Auto Mode Yes Yes
Smart App No Yes
Voice Control No Yes
Noise Levels 41.4 – 63.5 dBA 42.1 – 59.9 dBA
Noise Ratings
Warranty 3-year 2-year
In-Depth Review Coway AP-1512HH Levoit Core 400S
Price Check Price on Amazon Check Price on Amazon

Levoit and Coway Features

Many advanced options such as air quality sensors, air quality indicators, auto mode, timers, and the like are mutual for both devices. In addition, Levoit boasts a smart app option, while Coway boasts a unique ECO mode option.

Levoit Core 400S Vs Coway AP-1512HH - View from the top
View from the top. Photo: Airpurifierfirst.com / Milan Antonic

A filter reset indicator is also built in on both. However, some options adorn only one of the devices, which makes that device special, and I will explain these in more detail below.


When speaking of controls, I would like to emphasize that both air purifiers have a control panel located on the top.

Levoit Core 400S Vs Coway AP-1512HH - Controls
Levoit Core 400S Vs Coway AP-1512HH – Have controls located on the top. Photo: Airpurifierfirst.com / Milan Antonic

Levoit’s control panel has touch buttons, indicators, and a display built-in, while Coway has a control panel consisting of buttons and indicators.

I like the layout of the buttons on both devices and in my opinion, they are straightforward to use. When it comes to controls in general, I’m giving a slight advantage to Levoit because it can connect to a smart app and be controlled remotely.

Air Quality Sensor and Indicator

Monitoring current air quality is an option mutual for both air purifiers. Levoit and Coway use an air quality sensor that detects dust particles in real time.

The Levoit Core 400S displays real-time air quality on the control panel through an indicator that illuminates a different color depending on the current air quality, on display as a PM2.5 value, and via a smart app. It uses an AirSight Plus laser dust sensor located on the back of the device, which has a built-in motor, which means it can work even when the device is turned off.

The Coway AP-1512HH uses an air quality sensor located on the side. The same as Levoit’s, this sensor detects dust particles in real time. The current air quality can be read on the LED indicator located on the control panel on the far right.

I like that both devices have the ability to adjust the sensitivity of the air quality sensor and that the sensors in both works even when the air purifier is off.

Auto Mode

The air quality sensor works in combination with many options. For example, these two air purifiers have an auto mode that will automatically switch fan speeds based on the current air quality in the room.

Levoit Core 400S Vs Coway AP-1512HH - Easily recognizable logos
Easily recognizable Levoit and Coway logos. Photo: Airpurifierfirst.com / Milan Antonic

Auto mode is a handy option that allows you to leave the device running automatically without setting it up additionally.

In addition to auto mode, which is a mutual feature for both, Coway has an ECO mode option, which works similarly to auto mode. But, ECO mode will turn off the air purifier if the air quality is excellent in the last 30 minutes. Besides, it will continue measuring the air quality and turning the air purifier on if it worsens.

Smart App

The Levoit Core 400S has the ability to connect to the VeSync app available for Android and iOS devices. Coway does not have such a possibility.

Levoit Core 400S - PM2.5 Reading and Operating Controls
Levoit Core 400S VeSync App – PM2.5 Reading and Operating Controls. Photo: Airpurifierfirst.com / Milan Antonic

The VeSync smart app opens up some additional options for controlling the Levoit air purifier. My favorite is the option that allows complete programming/automation of the air purifier, e.g., you can automate turning the Levoit on if the air quality exceeds a specific value. In addition to this option, I like adjusting the sensitivity of the air quality sensor and the in-detail display of air quality shown by days.

All in all, connecting to a smart app is a great feature, which definitely gives Levoit a slight advantage in this comparison.


A timer is also an exciting option that adorns both devices. Basically, the timer is used to set a time for which the air purifier will turn off.

Levoit Core 400S Vs Coway AP-1512HH - Air Purifiers Comparison
Levoit Core 400S Vs Coway AP-1512HH – side-by-side. Photo: Airpurifierfirst.com / Milan Antonic

The Coway AP-1512HH offers the ability to set the timer to 1h, 4h, or 8h, while on the Levoit Core 400S, you can set the timer between 1-12h.

Filter Reset Indicator

You don’t have to keep track of when it’s time to replace the filter on these two. There’s a filter reset indicator that will glow red as a sign to replace the filter.

Levoit and Coway use a filter reset indicator located on the control panel. At the same time, Levoit additionally has a slightly more detailed presentation of filter wear available through the smart app.


Because of the slightly different construction, Levoit is cylindrical, Coway is rectangular, the airflow on these two air purifies is somewhat different.

Levoit draws air through openings in the lower half, on all sides. Then, the filtered air exits at the top.

Coway, on the other hand, draws air in the front, through openings in the sides, bottom, and through small gaps located on the front lid. The air is then filtered and exits through the grilles at the top.


Levoit gives a 2-year warranty for the Core 400S, but you must register the device on the Levoit website soon after purchase to activate your warranty.

Coway is a little more generous, so it gives a 3-year warranty for the AP-1512HH.

Xiaomi Mi 3H Vs Levoit Core 400S Coway AP-1512HH Vs Blueair 211+ Coway AP-1512HH Vs Alen FLEX Related comparisons

Filtration Technology

When it comes to filtration technology, I would like to say that these two air purifiers use 3-stage filtration, plus an ionizer, which is an additional filtration stage on Coway.

Levoit Core 400S Vs Coway AP-1512HH - Filtration Technology Comparison
Levoit Core 400S Vs Coway AP-1512HH – Filtration technology comparison. Photo: Airpurifierfirst.com / Milan Antonic

Fortunately, both devices are CARB certified, which means that they do not produce unallowed amounts of ozone.

The first stage of filtration in both devices is pre-filter, the second stage of filtration is fibrous carbon filter in Coway, and True HEPA filter in Levoit. In contrast, the last stage of filtration in Coway is the True HEPA filter and activated carbon filter in Levoit.

Levoit Core 400S Vs Coway AP-1512HH - True HEPA filters
Levoit and Coway’s True HEPA filter comparison. Photo: Airpurifierfirst.com / Milan Antonic

The filters are of different shapes. With Coway, it is rectangular, while with Levoit, it is cylindrical. I really fancy the fact that both devices use a True HEPA filter, and I would like to commend the pellet-based carbon filter at Levoit, which is much more effective than the fibrous carbon filter at Coway.

All in all, these two air purifiers use very high-quality filters, which have been proven in performance tests that you can see if you scroll down a bit.

How to Replace Filters on These Air Purifiers?

The Levoit Core 400S and Coway AP-1512HH use non-washable filters, except the pre-filter on Coway, which means you need to change them from time to time. I would like to suggest cleaning the pre-filter on both air purifiers at least once a month. In that way, you will prolong the life of the True HEPA filters and improve the air purifier’s efficiency.

Fortunately, these two devices have a filter reset indicator that will notify you when it’s time to replace the filter.

The replacement process is straightforward, and if you don’t feel soo comfortable doing it, I explained in detail how to change the filters on these two air purifiers in individual reviews. You can find the explanations on the links below.

How to replace Coway AP-1512HH filters? How to replace Levoit Core 400S filter? Filter replacement

Noise Tests

Whenever I talk about noise, I try to consider as many parameters as possible, and one of the essential parameters is the number of speeds the device has. In this case, Levoit has a slight advantage because it has 5 fan speeds which is much more compared to the 3 speeds that Coway has.

Levoit Core 400S Vs Coway AP-1512HH - Noise level testing
Noise level testing. Photo: Airpurifierfirst.com / Milan Antonic

I really like that the Levoit Core 400S has a sleep mode, which is extremely quiet and helps you use the device in the bedroom. I’d also like if Coway had a sleep mode option, but that’s not a big drawback, as the Coway is as loud on first fan speed almost as much as Levoit on sleep mode.

What I could say as a complaint when it comes to noise is the volume at max speed, which is slightly higher on both devices. Levoit produces 59.9 dBA of sound at max speed, while Coway produces 63.5 dBA of sound.

Product Noise Range (dBA)
Coway AP-1512HH 41.4 – 63.5 dBA
Levoit Core 400S 42.1 – 59.9 dBA

All in all, I would declare Levoit to be a slightly quieter air purifier, primarily because it has more fan speeds, it is generally quieter at all speeds, and its motor works somehow more smoothly.

Performance Tests

Levoit Core 400S and Coway AP-1512HH cover rooms of about the same sizes. Levoit covers rooms up to 403 sq. ft., while Coway covers rooms up to 361 sq. ft. I have tested both devices in everyday situations in my house, and I also performed a few specialized tests, of which results I will present below.

Testing Levoit Core 400S and Coway AP-1512HH performance using a laser particle meter
Testing Levoit Core 400S and Coway AP-1512HH performance using a laser particle meter. Photo: Airpurifierfirst.com / Milan Antonic

During everyday testings in the rooms where I stay most of the day, I noticed that Levoit is more effective in removing bad odors, especially cooking and cigarette smoke.

All in all, I am delighted with the performance of these two air purifiers, which is why they are my absolute recommendation.

320 sq. ft. Room Tests

In the test in a room of 320 sq. ft., the air purifiers showed excellent results. In just 60 minutes of operation at max speed, the Levoit Core 400S improved air quality by about 96%, the same as the Coway AP-1512HH.

Air Quality Improvement In 320 sq. ft. Room
Coway AP-1512HH
Levoit Core 400S
0% 100%

320 sq. ft. Room

* Data measuring time is 60 minutes.

I am delighted with the results performed, which only further confirm the reliability and efficiency of these devices.

Operating Costs

These are mid-sized air purifiers, which is why I’m not surprised that the Coway AP-1512HH has a motor of 77W. However, I am positively even more surprised that the Levoit Core 400S has a motor of only 38W.

Levoit Core 400S Vs Coway AP-1512HH - Motors comparison
Motors comparison. Photo: Airpurifierfirst.com / Milan Antonic

This means that if you left these two air purifiers running at max speed, 24h a day, and so on for a month, your electricity bill would be increased by about $3 in the case of Levoit, and about $6 in the case of Coway.

Product Wattage Range (W)
Coway AP-1512HH 0.2 – 69.1W
Levoit Core 400S 0.9 – 35W

A slightly higher cost is the price of replacement filters, which is somewhat cheaper for Levoit. Suppose we sum up the cost of replacement filters and the cost of electricity consumption. In that case, we can easily conclude that Levoit Core 400S is a much cheaper air purifier than Coway AP-1512HH for maintenance annually.

Levoit Core 400S Vs Coway AP-1512HH Video Comparison

If you prefer video reviews rather than written ones, check out our video comparison of these two air purifiers.

Which One Does It Better?

To sum up, these are two great air purifiers, and I’m sure whichever you decide to buy, you won’t go wrong. However, as the goal of my comparisons is always to choose and recommend a winner, I did it.

In my opinion, the winner in this comparison, i.e., the air purifier I would rather choose for myself, is the Levoit Core 400S. I chose it because it can be controlled by smart options, has cheaper replacement filters, has slightly better odor neutralization, and is much cheaper for maintenance on an annual basis.

If you have any additional questions regarding these two products, please don’t hesitate to leave a comment in the comment box below.

6 responses to “Levoit Core 400S Vs Coway AP-1512HH – A Tough Choice!”

  1. Unca

    Thank you for the in-depth article on the two air filters. It was informative, and it helped me decide which air filter to buy. Moreover, the article was easy to understand.

  2. N

    Coway filters particles as small as 0.01 microns. That’s smaller than HEPA.

  3. Sarosh

    Thanks for your very thorough comparison of specifically these two purifiers. These were the ones that i had narrowed my preferences down to. I had already purchased the Levoit Core 400S, but reading your article reinforced my choice.

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