I recently purchased the Coway Airmega 100 and published its review just a few weeks ago.
This compact air purifier impressed me with its powerful performance during testing, placing it as a strong competitor to the Levoit Core 300S.
In this comparison, we measured the strengths of the Levoit Core 300S and Coway Airmega 100.
The Coway Airmega 100 has a CADR of 109 CFM (185 m³/h), whereas the Levoit Core 300S offers slightly more power with a CADR of 141 CFM (240 m³/h).
Both models include advanced features, but the Levoit stands out for its range of smart features.
Our Verdict
I’ll be honest: this was one of the toughest comparisons I’ve done so far, with the smallest details determining the winner.
Both air purifiers are outstanding—they performed exceptionally well in our tests, operate quietly, and are easy to use and maintain. Honestly, I could have declared this battle a draw, as the differences between the two air purifiers are barely noticeable.
However, I believe the Levoit Core 300S has something more to offer. It slightly outperformed the Coway Airmega 100 in our particle removal tests, was faster in the smoke tests, and has far more advanced features. It also works with the VeSync smart app, has a higher CADR, and uses a pellet-based carbon filter.
On the other hand, the Coway Airmega 100 is also an excellent choice. It’s slightly quieter than the Levoit and is better optimized for power use.
If you have any questions about these two air purifiers, feel free to drop them in the comments section of the article.
Specs: Coway Airmega 100 Vs Levoit Core 300S
| Product Image |  |  |
| Manufacturer | Coway | Levoit |
| Model | Airmega 100 | Core 300S |
| Dimensions (inches / cm) | 8.7 x 8.7 x 15.6 inches (22 x 22 x 39.5 cm) | 8.7 x 8.7 x 14.2 inches (22 x 22 x 36 cm) |
| Weight (pounds / kg) | 6.6 lbs (3.0 kg) | 5.95 lb (2.7 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 (80 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 | Pre-filter, True HEPA Filter, and Activated Carbon Filter |
| Filter Replacement Indicator | Yes | Yes |
| Filter Life | up to 12 months | 6-8 months |
| Power Consumption
Power Usage Summary: Our extensive testing of 80 air purifiers revealed the following power consumption insights:
Check out our power consumption calculator tool. | 25W | 26W |
| Operating Costs Ratings Operating Costs Ratings Score Summary: 9 - Average Score (80 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 | 4 – Sleep Mode, Speed 1, Speed 2, and Speed 3 |
| Air Quality Sensor Air Quality Sensor Summary: Out of 80 air purifiers tested, only 40 have the air quality sensor. | Yes | Yes |
| Air Quality Indicator | Yes | Yes |
| Auto Mode Auto Mode Summary: Out of 80 air purifiers tested, only 41 have auto mode functionality. | Yes | Yes |
| Smart App Smart App Summary: Out of 80 air purifiers tested, only 25 have smart app functionality. | No | Yes |
| Voice Control Voice Control Summary: Out of 80 air purifiers tested, only 24 have voice control functionality. | No | Yes |
| Other Features | Night LightDisplay LockTimer | Display OffDisplay LockTimer |
| Noise Level (low – high) | 40.3 – 60.9 dBA | 41.4 – 65.2 dBA |
| Noise Ratings Noise Ratings Score Summary: 9.3 - Average Score (80 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 Core 300S |
| Price |
Performance Test – Comparison
We tested the particle removal efficiency of these two air purifiers using the Temtop laser particle meter.
Although the Levoit Core 300S is designed to cover slightly larger rooms (219 sq. ft. or 20 m²) compared to the Coway Airmega 100 (169 sq. ft. or 15.7 m²), we performed our tests in two identical room sizes.
In the first test, performed in a 194 sq. ft. (18 m²) room, both air purifiers delivered outstanding results. Operating at maximum speed for 60 minutes, the Levoit Core 300S reduced PM2.5 particulate matter from 106.3 to 6.7 µg/m³, achieving a remarkable air quality improvement of 94%.
Particle Removal Tests - Comparison
We placed the Coway Airmega 100 Vs Levoit Core 300S in two separate tests and measured their performance using the Temtop laser particle meter.
The Coway Airmega 100 improved air quality by 93% in the same conditions.
In the second test, performed in a larger 320 sq. ft. (30 m²) room, both devices performed exceptionally well. The Levoit Core 300S improved air quality by 92%, while the Coway Airmega 100 achieved a 91% improvement.
The Levoit Core 300S not only demonstrated superior performance in particle removal tests but also proved more effective in neutralizing light odors. This advantage can likely be attributed to its pellet-based carbon filter, which is notably more efficient than the Coway’s filter.
Noise Level Test – Comparison
These two air purifiers have the same number of fan speeds, both include an auto mode and are relatively quiet—particularly at the lower speed levels.
We used a specialized noise measurement tool to measure the noise levels of both units across all speed settings.
Noise Levels - Comparison
Comparison of noise levels at all fan speeds between the Coway Airmega 100 Vs Levoit Core 300S air purifiers.
As shown in the chart above, the Levoit Core 300S is slightly louder at every speed level.
At the lowest speed, it produces a noise level of 41.4 dBA, compared to the Coway Airmega 100’s 40.3 dBA.
| Fan Speed | Coway Airmega 100 (dBA) | Levoit Core 300S (dBA) |
|---|---|---|
| Sleep Mode | 40.3 dBA | 41.4 dBA |
| Speed 1 (Low) | 41.9 dBA | 46.5 dBA |
| Speed 2 (Medium) | 50.3 dBA | 54.6 dBA |
| Speed 3 (High) | 60.9 dBA | 65.2 dBA |
A similar pattern is observed at maximum speed, where the Levoit Core 300S produces 65.2 dBA, while the Coway measures 60.9 dBA.
Overall, the Coway Airmega 100 is better optimized for noise, making it the quieter option. However, it’s worth noting that it also has a smaller CADR.
Operating Costs – Comparison
There is almost no difference in motor power between these two air purifiers. The Levoit Core 300S operates with a 26W motor, while the Coway Airmega 100 uses a 25W motor.
If used at maximum speed, 24 hours a day, for a month, the Levoit Core 300S would increase your electricity bill by approximately $2.01, compared to $1.95 for the Coway Airmega 100.
This efficiency difference is similar across all fan speeds, with the Coway Airmega 100 being slightly better optimized and consuming less power.
Monthly Power Consumption Cost - Comparison
Comparison of monthly power consumption costs for the Coway Airmega 100 Vs Levoit Core 300S air purifiers at all fan speeds.
However, the Levoit Core 300S has a higher CADR, which translates to a better power-to-CADR ratio.
In addition to electricity costs, there is also a cost of replacement filters. The Coway filter lasts longer and is only slightly more expensive than the replacement filter for the Levoit Core 300S.
| Fan Speed | Coway Airmega 100 (W + $/month) | Levoit Core 300S (W + $/month) |
|---|---|---|
| Standby | 0.3W ($0.03) | 1.1W ($0.09) |
| Sleep Mode | 2.7W ($0.24) | 3.8W ($0.33) |
| Speed 1 (Low) | 5.2W ($0.46) | 6W ($0.52) |
| Speed 2 (Medium) | 9.2W ($0.81) | 10.4W ($0.91) |
| Speed 3 (High) | 22.3W ($1.95) | 23W ($2.01) |
Taking all costs into account, we can conclude that the Coway Airmega 100 is slightly more affordable in terms of annual maintenance.
Leave a Reply