Rank #4 in Best Air Purifier 2026: 10 Ranked on Real Air Changes
Coway Airmega Jet HEPA Air Purifier, CADR 402 m3/h, Allergy UK Approved
Price and rating as shown on Amazon when we collected them. Both change.
The Airmega Jet quotes the highest CADR in this ranking at 402 cubic metres per hour, and the listing pairs that with the most thorough particle figure too: a 0.01 micrometre retention size on a HEPA filter, in a machine covering up to 104 square metres with a noise level given as 20 decibels and 50 watts of draw. It weighs 8.7 kilograms and stands 71.7 centimetres tall.
The listing names MegaJet technology for adjustable airflow and a GreenHEPA filter system, and refers to ECARF testing for allergy friendliness. At the time of collection it carried 436 ratings at 4.2 stars, so the evidence is thinner than its specification. Everything here comes from the Amazon listing rather than our own testing.
How those 436 ratings break down
An average hides its own shape. This is the spread behind the 4.2 stars.
Specification
Exactly as published on the Amazon listing, field for field.
| Power Source | Corded Electric |
|---|---|
| Control Method | Touch |
| Filter Type | HEPA |
| Floor Area | 104 Square Meters |
| Noise Level | 20 Decibels |
| Particle Retention Size | 0.01 Micron |
| Controller Type | Button Control |
| Wattage | 50 watts |
| Contaminant Filtration Capability | True |
| Special Features | MegaJet technology for adjustable airflow, GreenHEPA filter system for effective particle removal, ECARF tested for allergy friendliness |
| Filter Class | HEPA |
| Item Dimensions D x W x H | 19.6D x 37.6W x 71.7H centimetres |
| Item Weight | 8.7 kg |
| Colour | Silver |
| Brand Name | Coway |
| Model Number | AP-1220B |
| Global Trade Identification Number | 08809466829116 |
| Number of Packs | 1 |
| Item Highlight | BAF (Allergy UK) Certified, MegaJet Targeted/Wide Airflow, CADR 402 m³/h, 20 dB Sleep Mode, for Dust, Pollen, Pets & Smoke |
| Unit Count | 1.0 count |
What buyers actually say
Quoted from customer reviews on Amazon
Verified purchase“As the dust levels were becoming a real problem, from my husky, I decided that I needed to get an air purifier. After doing a lot of research, I found that I needed one with a true hepa filter, an active carbon filter and a washable /vacuumable pre-filter and decided that Coway would be my choice of brand and that this particular model would be the best, because of the addition of the active carbon filter and the room size compared to the popular mighty model, which has a cooker hood type carbon filter and not actual charcoal, which this one does. The air purifier arrived very quickly and was very easy to set up. It is so much quieter than I expected, even on turbo. I was previously having to vacuum multiple times a day. Now when I'm vacuuming, it's difficult to find much dust. The air in the room is liken to a window open and it feels so fresh. This appliance has really fixed my problem. Thank you Coway!”
Verified purchase“Wow way better than my other brand there's strange plastic smell coming from device when going through cycle hope this go's after few weeks Night works good takes some time kick in when gaming in the dark turns on night mode which is great I wear headphones so no problem after vaping outside my window the device turned red so senor works great Happy so far just hope that plastic dissipates soon I did visit YouTube to check which way filter goes every other brand is different and it's the best filter I've owned.Update Review 22/5/2025Just bought Filters after 12 weeks delay both GreenHEPA And Fine Dust Filters The Blue Fine Dust Filters I Recommend it will prolong other filters life There's Tabs on the pre Filter Needs to go inside There Which Side I would guess the blue face towards you.”
What it is up against
The rivals it was ranked against in Best Air Purifier 2026: 10 Ranked on Real Air Changes.
Rank #1
Winix 5500-2 Air Purifier, CADR 390 m3/h, 4-Stage Filtration, PlasmaWave
£159.00
Rank #2
Levoit Core 300S Smart HEPA Air Purifier, CADR 258 m3/h, PM2.5 Sensor
£149.99
Rank #3
Bosch Air 4000 Air Purifier, CADR 300 m3/h, 3-in-1 Filter, 62.5 m2
£189.99
Rank #5
Blueair Blue Max 3250i Smart WiFi Air Purifier, HEPASilent, Quiet Mark
£129.00
Questions people ask
What CADR is listed?
402 cubic metres per hour, the highest in this ranking.
What is the particle retention size?
0.01 micrometres.
What room size is listed?
Up to 104 square metres.
What airflow technology is named?
MegaJet, for adjustable airflow.
How many ratings does it have?
436 at the time of collection, averaging 4.2 stars.
Comments
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