Coway has launched its first small air purifier in its product lineup, which is an ideal device to be compared with many similar air purifiers we have tested here at Air Purifier First.
In this article, I will compare the Coway Airmega 100 and the Levoit Vital 100S. At first glance, these two devices seem completely different—Coway features a cylindrical design, while Levoit has a rectangular shape.
However, what truly matters is the CADR ratings, performance, and price. The Coway Airmega 100 has a CADR of 109 CFM (185 m³/h), while the Levoit Vital 100S has a CADR of 141 CFM (240 m³/h).
In the following sections, I will compare these two air purifiers’ specifications, performance, noise levels, and power consumption.
Our Verdict
After a detailed analysis of performance, specifications, and features, I must say that this was a very close battle, and choosing the winner was not easy at all.
Although the final decision came down to fine margins, the Levoit Vital 100S ultimately stands out as the better choice and the winner of this comparison. Levoit performed slightly better in tests, offers plenty of advanced features, uses a larger filter, has a pellet-based carbon filter, and has a higher CADR.
However, if you pick the Coway Airmega 100, you won’t make a mistake, as it’s an almost equally good option—just slightly behind Levoit.
If you have any questions about these two devices, feel free to leave a comment below.
| Product Image |  |  |
| Manufacturer | Coway | Levoit |
| Model | Airmega 100 | Vital 100S |
| Dimensions (inches / cm) | 8.7 x 8.7 x 15.6 inches (22 x 22 x 39.5 cm) | 12.8 x 6.4 x 16.1 inches (32.5 x 16.3 x 41 cm) |
| Weight (pounds / kg) | 6.6 lbs (3.0 kg) | 7 lb (3.2 kg) |
| Clean Air Delivery Rate (CADR) | 109 CFM (185 m³/h) | 141 CFM (240 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. | 169 sq. ft. (15.7 m²) | 219 sq. ft. (20 m²) |
| Performance Ratings Performance Ratings Score Summary: 8.4 - Average Score (76 products) 9.8 - Best Score (2 products) 2.5 - Worst Score (2 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 Deodorization Filter | Washable Pre-filter, Main Filter, and Activated Carbon Filter |
| Filter Replacement Indicator | Yes | Yes |
| Filter Life | up to 12 months | 9-12 months |
| Power Consumption
Power Usage Summary: Our extensive testing of 76 air purifiers revealed the following power consumption insights:
Check out our power consumption calculator tool. | 25W | 35W |
| Operating Costs Ratings Operating Costs Ratings Score Summary: 9 - Average Score (76 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 | 4 - Sleep Mode, Speed 1, Speed, and Speed 3 | 5 – Sleep Mode, Low Mode, Medium Mode, High Mode, and Turbo Mode |
| Air Quality Sensor Air Quality Sensor Summary: Out of 76 air purifiers tested, only 37 have the air quality sensor. | Yes | Yes |
| Air Quality Indicator | Yes | Yes |
| Auto Mode Auto Mode Summary: Out of 76 air purifiers tested, only 38 have auto mode functionality. | Yes | Yes |
| Smart App Smart App Summary: Out of 76 air purifiers tested, only 23 have smart app functionality. | No | Yes |
| Voice Control Voice Control Summary: Out of 76 air purifiers tested, only 22 have voice control functionality. | No | Yes |
| Other Features | Night LightDisplay LockTimer | Display OffDisplay LockTimer |
| Noise Level (low – high) | 40.3 – 60.9 dBA | 40.5 – 65.4 dBA |
| Noise Ratings Noise Ratings Score Summary: 9.3 - Average Score (76 products) 10 - Best Score (1 products) 8.2 - 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 | Bedrooms Small Spaces Dust Allergies Children's Rooms | Bedrooms Small Spaces Dust Allergies Children's Rooms Smart Home Integration |
| Warranty | 3-year | 2-year |
| In-Depth Review | Coway Airmega 100 | Levoit Vital 100S |
| Price | Check Price on Amazon | Check Price on Amazon |
Performance Test – Comparison
We tested the performance of these two models in two rooms of the same size.
The fact that the Coway covers smaller rooms didn’t impact our tests, mainly because the Coway Airmega 100 proved to be effective even in slightly larger rooms than its recommended coverage area.
The Coway Airmega 100 is designed for rooms up to 169 sq. ft. (15.7 m²), while the Levoit Vital 100S covers spaces up to 219 sq. ft. (20 m²).
Particle Removal Tests - Comparison
We placed the Coway Airmega 100 Vs Levoit Vital 100S in two separate tests and measured their performance using the Temtop laser particle meter.
In the first test, performed in a 194 sq. ft. (18 m²) room, both devices delivered excellent results, but the Levoit demonstrated slightly better performance. The Levoit Vital 100S improved air quality by approximately 95%, while the Coway Airmega 100 achieved an improvement of around 93%.
In the second test, the performance difference was similar; however, this time, we tested the devices in a larger 320 sq. ft. (30 m²) room. The Coway Airmega 100 improved air quality by about 91%, while the Levoit Vital 100S achieved an improvement of around 94%.
Both tests lasted for 60 minutes, with the devices running at maximum speed the entire time.
It’s evident that the Levoit Vital 100S delivered better results, making it a slightly better choice in terms of performance for removing airborne particles compared to the Coway Airmega 100.
Noise Level Test – Comparison
When comparing noise levels, I must say that Levoit holds a slight advantage—not because of its smart app, but because it offers five fan speeds.
In contrast, the Coway Airmega 100 has only four fan speeds.
However, the difference in noise levels becomes noticeable, mostly at maximum speed. At max speed, the Levoit Vital 100S produces a noise level of 65.4 dBA, while the Coway Airmega 100 produces 60.9 dBA.
At the lowest speed, the situation is quite different and actually favors both devices. The Coway Airmega 100 generates 40.3 dBA at its lowest speed, while the Levoit Vital 100S produces 40.5 dBA.
Noise Levels - Comparison
Comparison of noise levels at all fan speeds between the Coway Airmega 100 Vs Levoit Vital 100S air purifiers.
At other speeds, the noise levels are approximately the same, which you can compare by referring to the chart above.
It’s true that the Levoit is slightly loud at maximum speed, but at the same time, it also has a much higher CADR and covers larger rooms.
This also means that if we compare the noise levels of both devices at speed 3 (which is the highest speed for Coway), the Levoit is much quieter.
| Fan Speed | Coway Airmega 100 (dBA) | Levoit Vital 100S (dBA) |
|---|---|---|
| Sleep Mode | 40.3 dBA | 40.5 dBA |
| Speed 1 (Low) | 41.9 dBA | 42.7 dBA |
| Speed 2 (Medium) | 50.3 dBA | 51.6 dBA |
| Speed 3 (High) | 60.9 dBA | 58.7 dBA |
| Speed 4 (Turbo) | - | 65.4 dBA |
Overall, I would say that both devices are well-optimized for noise levels, but Levoit is slightly louder at maximum speed.
Operating Costs – Comparison
Both of these air purifiers are very energy-efficient. The Coway Airmega 100 uses a 25W motor, while the Levoit Vital 100S uses a more powerful 35W motor.
While it is true that the Levoit Vital 100S consumes more power, it’s important to consider that it also has a higher CADR and covers larger rooms.
If you were to run both devices at maximum speed, 24 hours a day, for an entire month, your electricity bill would increase by approximately $2.66 for the Levoit and around $1.95 for the Coway.
Although the difference in energy consumption is noticeable, both devices are highly energy-efficient.
Monthly Power Consumption Cost - Comparison
Comparison of monthly power consumption costs for the Coway Airmega 100 Vs Levoit Vital 100S air purifiers at all fan speeds.
A detailed breakdown of power consumption at all speeds can be found in the chart above.
Beyond electricity costs, there is also a cost of replacement filters. The good news is that the filters for both devices have an average lifespan of up to one year. Another advantage is that replacement filters are reasonably priced for both and are almost always in stock.
| Fan Speed | Coway Airmega 100 (W + $/month) | Levoit Vital 100S (W + $/month) |
|---|---|---|
| Standby | 0.3W ($0.03) | 1.5W ($0.13) |
| Sleep Mode | 2.7W ($0.24) | 3.2W ($0.28) |
| Speed 1 (Low) | 5.2W ($0.46) | 6.5W ($0.57) |
| Speed 2 (Medium) | 9.2W ($0.81) | 10.5W ($0.92) |
| Speed 3 (High) | 22.3W ($1.95) | 17.6W ($1.54) |
| Speed 4 (Turbo) | - | 30.3W ($2.66) |
In conclusion, although the results in this test are nearly identical, and while both devices are energy-efficient and affordable to maintain, the Coway Airmega 100 is slightly more cost-effective in terms of annual maintenance.
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