Today, I’ll be comparing two very compact air purifiers designed for small rooms, but with some surprisingly interesting features.
Both units delivered very strong results in our tests and rank quite well in this class of air purifiers. The Coway Airmega 50 covers rooms up to 104 sq. ft. (9.7 m²), while the Afloia Kilo covers rooms up to 128 sq. ft. (11.9 m²).
I’ve thoroughly tested their performance, and below you’ll find a detailed overview of the results.
Our Verdict
Although the Afloia Kilo is a slightly larger and more powerful air purifier, after performing a detailed analysis and reviewing all the test results, I believe the Coway Airmega 50 offers much more.
The Coway performed better in airborne particle removal tests, is better optimized for noise, and is more affordable to maintain. These are the reasons I would pick the Coway over the Afloia.
If you have any questions about these two air purifiers, please feel free to ask in the comments section below the article.
Specs: Coway Airmega 50 Vs Afloia Kilo
| Product Image |  |  |
| Manufacturer | Coway | Afloia |
| Model | Airmega 50 | Kilo |
| Dimensions (inches / cm) | 6.7 x 6.7 x 12.6 inches (17 x 17 x 32 cm) | 7.6 x 7.6 x 15.2 inches (19.5 x 19.5 x 38.8 cm) |
| Weight (pounds / kg) | 3.4 lbs (1.6 kg) | 4.4 lb (2 kg) |
| Clean Air Delivery Rate (CADR) | 66.7 CFM (113.3 mÂł/h) | 82 CFM (140 mÂł/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. | 104 sq. ft. (9.7 m²) | 128 sq. ft. (11.9 m²) |
| Performance Ratings Performance Ratings Score Summary: 8.3 - Average Score (101 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, HyperCaptive Filter, and Deodorization Filter | Pre-filter, HEPA-type Filter, and Activated Carbon Filter |
| Filter Replacement Indicator | Yes | Yes |
| Filter Life | up to 8 months | 3-6 months |
| Power Consumption
Power Usage Summary: Our extensive testing of 101 air purifiers revealed the following power consumption insights:
Check out our power consumption calculator tool. | 14W | 23W |
| Operating Costs Ratings Operating Costs Ratings Score Summary: 8.9 - Average Score (101 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 2, and Speed 3 | 3 - Sleep Mode, Speed 1, and Speed 2 |
| Air Quality Sensor Air Quality Sensor Summary: Out of 101 air purifiers tested, only 51 have the air quality sensor. | Yes | No |
| Air Quality Indicator | Yes | No |
| Auto Mode Auto Mode Summary: Out of 101 air purifiers tested, only 52 have auto mode functionality. | Yes | No |
| Smart App Smart App Summary: Out of 101 air purifiers tested, only 30 have smart app functionality. | No | No |
| Voice Control Voice Control Summary: Out of 101 air purifiers tested, only 29 have voice control functionality. | No | No |
| Other Features | Control Panel LockTimer | Night Light |
| Noise Level (low – high) | 40 – 57.1 dBA | 43.1 – 65.6 dBA |
| Noise Ratings Noise Ratings Score Summary: 9.2 - Average Score (101 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 | Bedrooms Low Energy Cost Small Spaces | Small Spaces |
| Warranty | 1-year | Lifetime (if registered within 7 days of purchase) |
| In-Depth Review | Coway Airmega 50 | Afloia Kilo |
| Price |
Performance Test – Comparison
These are two very compact devices with modest CADR ratings. The Coway Airmega 50 has a CADR of 66.7 CFM (113.3 mÂł/h), while the Afloia Kilo has a CADR of 82 CFM (140 mÂł/h).
We placed both units in two rooms of identical dimensions to test and compare their performance in capturing airborne particles. We used a Temtop laser particle meter for our measurements.
Particle Removal Tests - Comparison
We placed the Coway Airmega 50 and Afloia Kilo in two separate tests and measured their performance using the Temtop laser particle meter.
In the first test, performed in a 120 sq. ft. (11 m²) room that roughly matches the recommended room size for both units, the Coway Airmega 50 improved air quality by 92%, while the Afloia Kilo improved it by 90%.
In the second test, this time in a slightly larger room, the Coway Airmega 50 improved air quality by 90%, while the Afloia Kilo improved it by 87%.
Although both units delivered impressive results in our tests, the Coway Airmega 50 performed slightly better overall. It’s worth noting that both devices were running at maximum speed throughout the entire testing period.
Noise Level Test – Comparison
When it comes to noise levels, the first difference is that the Coway Airmega 50 has four fan speeds, while the Afloia Kilo has three.
We tested their noise levels using a specialized measurement tool that measures noise on a dBA scale.
Noise Levels - Comparison
Comparison of noise levels at all fan speeds between the Coway Airmega 50 and Afloia Kilo air purifiers.
At the lowest speed, the Coway Airmega 50 produces 40 dBA, while the Afloia Kilo produces 43.1 dBA.
However, at maximum speed, the situation is quite different. The Coway Airmega 50 produces 57.1 dBA, while the Afloia Kilo produces 65.6 dBA.
| Fan Speed | Coway Airmega 50 (dBA) | Afloia Kilo (dBA) |
|---|---|---|
| Sleep Mode | 40 dBA | 43.1 dBA |
| Speed 1 (Low) | 41.2 dBA | 47.9 dBA |
| Speed 2 (Medium) | 49.4 dBA | 65.6 dBA |
| Speed 3 (High) | 57.1 dBA | - |
Frankly, 65.6 dBA at maximum speed is too loud, especially for an air purifier with such a small CADR.
I would say that the Coway Airmega 50 is much better optimized for noise than the Afloia.
Operating Costs – Comparison
As for power consumption, with a motor of just 14W, the Coway Airmega 50 is one of the lowest power consumers in its class. The Afloia Kilo uses a 23W motor.
If you were to run both devices at maximum speed, 24 hours a day for one month, your electricity bill would increase by about $2.24 for the Afloia and about $1.01 for the Coway Airmega 50.
Monthly Power Consumption Cost - Comparison
Comparison of monthly power consumption costs for the Coway Airmega 50 and Afloia Kilo air purifiers at all fan speeds.
Beyond power consumption, there is also the cost of replacement filters. The Coway’s filter needs to be replaced approximately every 8 months, while the Afloia’s needs to be replaced every 3 to 6 months.
| Fan Speed | Coway Airmega 50 (W + $/month) | Afloia Kilo (W + $/month) |
|---|---|---|
| Standby | 0W ($0) | 0W ($0) |
| Sleep Mode | 0.8W ($0.07) | 2.3W ($0.2) |
| Speed 1 (Low) | 2.8W ($0.25) | 5.1W ($0.45) |
| Speed 2 (Medium) | 6.2W ($0.54) | 25.6W ($2.24) |
| Speed 3 (High) | 11.5W ($1.01) | - |
When you factor in that the Afloia’s replacement filter is more expensive, needs to be replaced more frequently, and that the unit consumes more power at maximum speed, it’s easy to conclude that the Coway Airmega 50 is more affordable to maintain.
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