In this comparison, I will compare the strengths of the Mila and Levoit Core 400S air purifiers.
Both models feature smart capabilities, strong performance, well-optimized motors, and high CADR ratings.
Mila is a unique air purifier with a unique CADR that depends on the filter you choose. There are seven different filter options, each with a different density, resulting in varying CADR ratings.
For our test, we used Mila with The Big Sneeze filter. With this filter, Mila has a CADR of 245 CFM (416 m³/h), making it ideal for rooms up to 380 sq. ft. (35 m²).
On the other hand, the Levoit Core 400S has a CADR of 260 CFM (442 m³/h), making it suitable for rooms up to 403 sq. ft. (37 m²).
The fact that these two models have similar CADR ratings, plenty of advanced features, and excellent performance makes this comparison even more interesting.
Our Verdict
Although the Mila air purifier is considered the best smart air purifier on the market, it falls short in terms of performance, noise, and power use.
Its motor isn’t well-optimized, making it noisier and less energy-efficient than some similar devices.
Considering this, along with its better performance, superior results in the smoke test, and longer-lasting filters, I would say the Levoit Core 400S is the better choice.
If you have any questions about these two devices, feel free to leave a comment below the article.
Specs: Mila Vs Levoit Core 400S
| Product Image |  |  |
| Manufacturer | N/A | Levoit |
| Model | Mila | Core 400S |
| Dimensions (inches / cm) | 12 x 12 x 15 inches (30.5 x 30.5 x 38.1 cm) | 10.8 x 10.8 x 20.5 inches (27.4 x 27.4 x 52 cm) |
| Weight (pounds / kg) | 18 lb (8.2 kg) | 10.5 Ib (4.8 kg) |
| Clean Air Delivery Rate (CADR) | 245 CFM (416 m³/h) | 260 CFM (442 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. | 380 sq. ft. (35 m²) | 403 sq. ft. (37 m²) |
| Performance Ratings Performance Ratings Score Summary: 8.4 - Average Score (79 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 | HEPA and Activated Carbon Filter (Option) | Pre-filter, True HEPA Filter, and Activated Carbon Filter |
| Filter Replacement Indicator | No | Yes |
| Filter Life | about 6 months | up to 12 months |
| Power Consumption
Power Usage Summary: Our extensive testing of 79 air purifiers revealed the following power consumption insights:
Check out our power consumption calculator tool. | 88W | 38W (24W European Model) |
| Operating Costs Ratings Operating Costs Ratings Score Summary: 9 - Average Score (79 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 | 10 – Speed 1, Speed 2, Speed 3, Speed 4, Speed 5, Speed 6, Speed 7, Speed 8, Speed 9, and Speed 10 | 5 – Sleep Mode, Low Mode, Medium Mode, High Mode, and Turbo Mode |
| Air Quality Sensor Air Quality Sensor Summary: Out of 79 air purifiers tested, only 39 have the air quality sensor. | Yes | Yes |
| Air Quality Indicator | Yes | Yes |
| Auto Mode Auto Mode Summary: Out of 79 air purifiers tested, only 40 have auto mode functionality. | Yes | Yes |
| Smart App Smart App Summary: Out of 79 air purifiers tested, only 25 have smart app functionality. | Yes | Yes |
| Voice Control Voice Control Summary: Out of 79 air purifiers tested, only 24 have voice control functionality. | Yes | Yes |
| Other Features | Carbon Monoxide Detector | Display OffDisplay LockTimer |
| Noise Level (low – high) | 43.2 - 73.5 dBA | 42.1 – 59.9 dBA |
| Noise Ratings Noise Ratings Score Summary: 9.3 - Average Score (79 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 | Living Rooms Offices Dust Air Quality Monitoring | Living Rooms Kitchens Allergies Large Spaces Dust Smart Home Integration Air Quality Monitoring |
| Warranty | 1-year | 2-year |
| In-Depth Review | Mila | Levoit Core 400S |
| Price | Check Price on Amazon | Check Price on Amazon |
Performance Test – Comparison
We tested the airborne particle removal performance of these two devices. Since they are intended for nearly identical room sizes, this test was straightforward to perform.
Both devices were tested in a 320 sq. ft. (30 m²) room, running at maximum speed for 60 minutes.
Particle Removal Tests - Comparison
We placed the Mila and Levoit Core 400S in two separate tests and measured their performance using the Temtop laser particle meter.
After that time, Mila improved air quality by approximately 92%, while the Levoit Core 400S achieved around 96%.
Overall, Levoit demonstrated superior performance in capturing airborne particles, making it the more efficient air purifier and the better choice in our test.
Smoke Box Test – Comparison
We tested how quickly these two models remove smoke from a glass box.
Despite having similar CADR ratings and high-quality filters, the Levoit Core 400S performed slightly better in this test.
It took the Levoit 15 seconds to completely clear the smoke, while the Mila air purifier took 20 seconds.
Overall, Levoit outperformed Mila in this test, which is, I believe, primarily due to its higher-quality carbon filter.
However, if you were to choose a different filter for the Mila—one with more carbon pellets—I believe the Levoit Core 400S would have a much harder time keeping up.
Noise Level Test – Comparison
The Mila is one of the few air purifiers with 10 fan speeds. Some others I’ve tested with this many fan speeds include the Xiaomi 4 Lite and the Dyson TP02.
Honestly, it’s hard to beat a device with 10 fan speeds. However, the issue with the Mila air purifier is that its motor is not well-optimized.
At the lowest speed, the Mila produces 43.2 dBA of noise, which is somewhat tolerable. The Levoit Core 400S, on the other hand, operates at 42.1 dBA at its lowest speed.
Noise Level Comparison
Comparing the Mila Vs Levoit Core 400S noise levels at minimum and maximum speeds.
At maximum speed, however, the Mila reaches a noise level of 73.5 dBA, which is excessive—even for an air purifier with a high CADR and 10 fan speeds.
In contrast, the Levoit Core 400S produces only 59.9 dBA at maximum speed while maintaining a CADR very similar to the Mila’s.
This clearly shows that the Levoit Core 400S is much better optimized for noise than the Mila.
Operating Costs – Comparison
When it comes to power consumption, the Mila isn’t very well-optimized in this area either.
This air purifier uses an 88W motor, which is by far the most powerful among all the air purifiers we’ve tested so far.
The Levoit Core 400S, on the other hand, features a well-optimized 38W motor, making it drastically more energy-efficient than the Mila.
Power Usage Comparison
Comparing the Mila Vs Levoit Core 400S power use at minimum and maximum speeds.
For example, if both devices ran at maximum speed 24 hours a day for a month, your electricity bill would increase by approximately $6.61 with the Mila and only about $3.06 with the Levoit Core 400S.
Beyond its better energy efficiency, the Levoit also uses a longer-lasting and significantly more affordable replacement filter compared to the Mila.
All of this makes the Levoit Core 400S far more cost-effective to maintain.
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