1 / 7Coway Airmega 250 Air Purifier, 1,860 sq ft
Coway Airmega 250 is a corded air purifier with HEPA filtration, a washable pre-filter, air-quality monitoring and automatic fan adjustment. Its advertised coverage depends on the cleaning time: the listing says up to 930 sq. ft. in 30 minutes or 1,860 sq. ft. in 60 minutes.
At a glance
- A washable pre-filter is paired with activated carbon and HEPA filtration, according to the listing.
- Smart Mode adjusts fan speed according to detected air quality, while Rapid Mode is described as running at maximum power when air quality needs a boost.
- The listing claims 99.97% reduction of 0.3-micron particles and gives separate coverage rates of 930 sq. ft. in 30 minutes and 1,860 sq. ft. in 60 minutes.
- A PM2.5 sensor is described as showing real-time air quality on an LED bar.
Reference price: $441.33
Price checked: Nov 13, 2026
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Pros and cons
Pros
- Automatic fan-speed adjustment and an air-quality indicator reduce the need to choose a speed manually.
- The pre-filter is washable, and the stated filter combination includes activated carbon for odours and VOCs.
- The listing describes a sleep-mode noise level of 22 dB, and customers report that operation is quiet, especially at medium speed.
Technical specifications
16 specifications| Brand | Coway |
|---|---|
| Model | Airmega 250 |
| Model number | AP-1720H |
| Colour | Beige |
| Filter type | HEPA |
|---|---|
| Particle retention size | 0.3 micron |
| Contaminant filtration capability | Dust, Pollen, Volatile Organic Compounds (VOCs) |
| Floor area | 1860 square_feet |
| Noise level | 22 db |
| Control methods listed | Touch |
|---|---|
| Special features | Air Quality Monitor, Filter Life Indicator, Smart Mode |
| Power configuration | Corded Electric |
|---|---|
| Wattage | 64 watts |
| Dimensions listed | 21.1D x 50W x 47H centimetres |
|---|---|
| Weight listed | 9.3 kg |
| Warranty description | 3 Year Manufacturer's Limited Warranty |
|---|
What to know before buying
- Coverage depends on the stated cleaning interval. The listing claims up to 930 sq. ft. in 30 minutes or 1,860 sq. ft. in 60 minutes, so consider the shorter-interval figure when choosing for a large room. The stated 22 dB applies to sleep mode, not every fan setting. Customer feedback is mixed on value and odour removal, so results for those priorities may not meet every buyer's expectations.
What’s in the box
Included- Air purifier
- Filter set
- User manual
Who is it for?
A good fit for
- Buyers who want an air purifier with automatic fan adjustment and visible air-quality monitoring.
- Households looking for a washable pre-filter alongside HEPA and activated-carbon filtration.
- Users considering a large-area purifier who can assess coverage using the listing's stated cleaning intervals.
Less suited to
- Buyers who need an independently established coverage or odour-removal result for their specific room.
- People who need cordless operation, since the listed power configuration is corded electric.
Customer reviews on Amazon
- 5 stars
71% 71% - 4 stars
16% 16% - 3 stars
5% 5% - 2 stars
4% 4% - 1 star
4% 4%
Customer feedback highlights perceived air-cleaning effectiveness, quiet operation, airflow, appearance and the air-quality monitor. For buyers who want to track room conditions and leave fan adjustment to Smart Mode, these reported strengths align with the listed monitor and automatic controls. Feedback is mixed on value and odour removal, so those outcomes may be less consistent for buyers prioritizing cost or odour control.
Positive themes
- Customers report effective air cleaning, including during cooking, and appreciate the quiet operation, appearance and air-quality monitoring.
Mixed feedback
- Customer opinions are mixed on value for money and odour removal.
Frequently asked questions
How large an area does the Airmega 250 cover?
The listing states up to 930 sq. ft. in 30 minutes or up to 1,860 sq. ft. in 60 minutes. These are different cleaning intervals, not equivalent coverage claims.
Does it adjust its fan speed automatically?
Yes. The listing says Smart Mode adjusts fan speed based on room air quality. It also describes Rapid Mode as running at maximum power when air quality needs a boost.
What filtration does it use?
The listing describes a washable pre-filter, activated carbon filter and HEPA filter. It claims 99.97% reduction of 0.3-micron particles, but that is a manufacturer claim rather than an independently confirmed result here.
What is included in the stated warranty?
The product details list a 3 Year Manufacturer's Limited Warranty. The supplied information does not specify its coverage terms.
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