Our verdict: The Coway Airmega Mighty AP-1512HH ranks 4th of the 10 air purifiers we compare, with 8.5 out of 10.
Coway Airmega Mighty AP-1512HH
8.5/10
The Coway Airmega Mighty AP-1512HH is a True HEPA tower with a carbon stage, an auto mode and an eco mode that stops the fan in clean air. It suits allergy sufferers and pet owners with a bedroom or living room to clean.
Filter-change indicator and allergy certifications
Keep in mind
Design is dated and there is no app
Lights stay on in a dark bedroom unless you dim them
Large and bulky for a bedroom
Why the Coway Airmega Mighty AP-1512HH scores 8.5
Each bar shows where it places among the 10 air purifiers in this guide, so a full bar is 1st of 10. How happy owners are counts for most of the score.
How happy owners are3rd of 10
How many rated it3rd of 10
How new it is9th of 10
Level with the Levoit Core 300S
The Levoit Core 300S and the Coway Airmega Mighty AP-1512HH score the same, so either is a safe pick. The Levoit Core 300S goes first because it is the newer design.
About the Coway Airmega Mighty AP-1512HH
The AP-1512HH cleans air in four stages: a washable pre-filter, a deodorisation (carbon) filter, a True HEPA filter and a bipolar ionizer. Coway quotes CADR figures of 233 for smoke, 246 for dust and 240 for pollen. Its room ratings are about 34 m² at 4.8 air changes an hour, 81 m² at 2 changes and 162 m² at 1 change.
Auto mode reads the air and sets the fan speed to match, and an air quality indicator shows the result. Eco mode stops the fan after 30 minutes of clean air and restarts it when the sensor picks up pollution. You can also pick speed 1, 2 or 3, and set a timer of 1, 4 or 8 hours. A filter-change indicator tells you when to swap the carbon and HEPA filters. There is no app, and one reviewer reports no sleep mode.
Coway's page is for the US version, and we could not find a UK retailer or UK Coway page for this exact model. Check the voltage and plug on the listing before buying. Coway's UK site sells a different model, the Airmega Mighty Wifi, so its specs and warranty do not apply here.
What owners report about the Coway Airmega Mighty AP-1512HH
Owner feedback we could find for this exact model is thin, mostly comments under a review site. Those owners are happy with how it keeps the air indicator on the clean setting, and one said it only showed a higher reading while cooking.
The complaints are small and specific. One owner returned a unit because the fan wobbled and vibrated, and said others had the same problem. Their replacement was fine. Another found the air quality indicator stuck on the clean colour and was told to set the sensor to its most sensitive option. Owners also ask about the indicator lights in a bedroom, and the answer they were given is to hold the ionizer button for three seconds to switch the lights off.
Filters are a running cost. An owner pointed out that only one carbon filter comes in the box. The Air Purifier First review says the pre-filter needs washing every two to four weeks and the dust sensor cleaning about every two months.
Who the Coway Airmega Mighty AP-1512HH suits
It suits allergy sufferers, pet owners and anyone with a living room or bedroom of around 30 m² who wants a purifier that adjusts itself and goes quiet when the air is clean. Eco mode is useful if you leave it on all day.
Look elsewhere if you want an app, a compact unit or a dark bedroom without fiddling with lights. The Levoit Core 300S is a smaller smart option, and the Blueair Blue Max 3250i is a plainer, quieter tower. For a big open-plan room, the Philips PureProtect 3200 Series AC3220/10 covers more space.
Questions about the Coway Airmega Mighty AP-1512HH
How often should I change the filters on the Coway AP-1512HH?
Coway says the deodorisation filter lasts about 6 months and the HEPA filter about 1 year. The pre-filter is washable, and a filter-change indicator tells you when to reset after swapping.
How do I turn off the lights on the Coway AP-1512HH?
One reviewer says to hold the ionizer button for 3 seconds to switch the lights off. This comes from a US-based review, so check your manual if it does not work.
Does the Coway AP-1512HH produce ozone?
It has a bipolar ionizer, which you can switch off. One review reports a very low ozone figure, 9 ppb, in the California listing, and saw no increase in its own run.
How big a room does the Coway AP-1512HH cover?
Coway rates it for about 34 m² at 4.8 air changes an hour, 81 m² at 2 changes an hour and 162 m² at 1 change an hour. For allergies, use the smaller figure.
What does eco mode do on the Coway AP-1512HH?
Eco mode stops the fan after 30 minutes of clean air and restarts it when the sensor detects pollution. Some owners read the silence as a fault.
Other air purifier picks
The other badge winners in our air purifiers ranking.
The Coway Airmega Mighty AP-1512HH is a True HEPA tower with a carbon stage, an auto mode and an eco mode that stops the fan in clean air. 8.5 out of 10.
Every score here comes from our ranking model; no editor sets the order. Too few review sites cover air purifiers for their verdicts to lead, so this ranking is led by owners. It ranks products by how happy owners are, holding back any product few owners have rated until more agree. How many rated it and how new it is only settle close calls, and value for money earns its own badge rather than a higher place. We compared 16 models for this guide before settling on these ten.
Brands can't pay to be included or to move up. We last checked these picks in October 2026.
