I don’t think I’ve ever compared these two brands until now. In this article, you’ll find out whether the Bosch Air 2000 is a better buying option than the Coway Airmega 100.
Both are compact air purifiers with small CADR ratings and small room coverage. The Bosch Air 2000 is suitable for rooms up to 165 sq. ft. (15 m²), while the Coway Airmega 100 covers up to 169 sq. ft. (15.7 m²).
They both use three-stage filtration, don’t produce ozone, and are completely safe to use.
Neither model includes smart features, which—combined with several other similarities—makes these two air purifiers nearly identical in terms of specifications.
Our Verdict
In my opinion, Coway is a much more air-purifier-focused brand than Bosch, but the Bosch Air 2000 still delivered outstanding results in our tests.
Based on all the test data, the Coway Airmega 100 is the overall better buying option. It performed slightly better, uses more affordable and easier-to-find replacement filters, and features a well-optimized motor.
The Bosch Air 2000 is also a solid air purifier, but I don’t like that its replacement filters are often out of stock.
If you have any questions about these two air purifiers, feel free to ask in the comments section below the article.
Specs: Bosch Air 2000 Vs Coway Airmega 100
| Product Image |  |  40% off |
| Manufacturer | Bosch | Coway |
| Model | Air 2000 | Airmega 100 |
| Dimensions (inches / cm) | 9.25 x 9.25 x 15.28 inches (23.5 x 23.5 x 38.8 cm) | 8.7 x 8.7 x 15.6 inches (22 x 22 x 39.5 cm) |
| Weight (pounds / kg) | 4.96 lb (2.25 kg) | 6.6 lbs (3.0 kg) |
| Clean Air Delivery Rate (CADR) | 106 CFM (180 m³/h) | 109 CFM (185 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. | 165 sq. ft. (15 m²) | 169 sq. ft. (15.7 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, HEPA Filter, and Activated Carbon Filter | Pre-filter, True HEPA Filter, and Deodorization Filter |
| Filter Replacement Indicator | Yes | Yes |
| Filter Life | 6-8 months | up to 12 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. | 20W | 25W |
| 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 | 4 - Sleep Mode, Speed 1, Speed 2, and Speed 3 |
| Air Quality Sensor Air Quality Sensor Summary: Out of 101 air purifiers tested, only 51 have the air quality sensor. | Yes | Yes |
| Air Quality Indicator | Yes | Yes |
| Auto Mode Auto Mode Summary: Out of 101 air purifiers tested, only 52 have auto mode functionality. | Yes | Yes |
| 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 | Timer | Night LightDisplay LockTimer |
| Noise Level (low – high) | 40.1 – 62.7 dBA | 40.3 – 60.9 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 Children's Rooms | Bedrooms Small Spaces Dust Allergies Children's Rooms |
| Warranty | 3-year | 3-year |
| In-Depth Review | Bosch Air 2000 | Coway Airmega 100 |
| Price |
Performance Test – Comparison
When it comes to performance, the fact that both air purifiers cover almost the same room size makes this comparison much easier—and the results much clearer.
We tested each unit in our testing rooms and measured performance using the Temtop laser particle meter.
In the first test, performed in a 194 sq. ft. (18 m²) room, both the Bosch Air 2000 and the Coway Airmega 100 improved air quality by about 93%.
Particle Removal Tests - Comparison
We placed the Bosch Air 2000 and Coway Airmega 100 in two separate tests and measured their performance using the Temtop laser particle meter.
In the second test, in a larger 320 sq. ft. (30 m²) room, the Bosch Air 2000 improved air quality by 89%, while the Coway Airmega 100 achieved 91%.
Based on these results, the Coway Airmega 100 was slightly more efficient and the overall winner in this performance category.
In our odor-neutralization tests, both devices delivered average results.
They are fine for light odors, but not suitable for stronger pollutants such as smoke, VOCs, or other heavy odors.
Noise Level Test – Comparison
Both air purifiers have four fan speeds, and we measured the noise levels at each one.
The Bosch Air 2000 produces just 40.1 dBA at the lowest speed, while the Coway Airmega 100 produces 40.3 dBA.
Noise Levels - Comparison
Comparison of noise levels at all fan speeds between the Bosch Air 2000 and Coway Airmega 100 air purifiers.
At the maximum speed, the Bosch Air 2000 reaches 62.7 dBA, compared to 60.9 dBA from the Coway.
| Fan Speed | Bosch Air 2000 (dBA) | Coway Airmega 100 (dBA) |
|---|---|---|
| Sleep Mode | 40.1 dBA | 40.3 dBA |
| Speed 1 (Low) | 41.6 dBA | 41.9 dBA |
| Speed 2 (Medium) | 51.9 dBA | 50.3 dBA |
| Speed 3 (High) | 62.7 dBA | 60.9 dBA |
As you can see from the chart, their noise levels are almost identical, so I would consider this testing category a draw.
Operating Costs – Comparison
When it comes to power usage, both models use efficient, well-optimized motors. The Bosch Air 2000 uses a 20W motor, while the Coway Airmega 100 uses a 25W motor.
If run at maximum speed, 24 hours a day for an entire month, the Coway Airmega 100 would add about $1.95 to your electricity bill, while the Bosch Air 2000 would add about $1.73.
Monthly Power Consumption Cost - Comparison
Comparison of monthly power consumption costs for the Bosch Air 2000 and Coway Airmega 100 air purifiers at all fan speeds.
It’s clear that the Bosch uses slightly less power. However, when it comes to replacement filters, the Coway is the better option.
| Fan Speed | Bosch Air 2000 (W + $/month) | Coway Airmega 100 (W + $/month) |
|---|---|---|
| Standby | 0.1W ($0.01) | 0.3W ($0.03) |
| Sleep Mode | 2.1W ($0.18) | 2.7W ($0.24) |
| Speed 1 (Low) | 5.3W ($0.46) | 5.2W ($0.46) |
| Speed 2 (Medium) | 9W ($0.79) | 9.2W ($0.81) |
| Speed 3 (High) | 19.7W ($1.73) | 22.3W ($1.95) |
Unfortunately, the Bosch Air 2000 filters are frequently out of stock, which is a major issue for any air purifier manufacturer and makes the Bosch less attractive overall.
For these reasons, I would say that the Coway Airmega 100 is cheaper and easier to maintain annually.
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