5% of 428 verified Coway Airmega AP-1512HH Mightyowners don't recommend it — based on real owner comments from Reddit, enthusiast forums, and YouTube.
For balance: 92% recommend it. This page collects the complaints so you know what you're signing up for — read the full owner report for both sides. How we score
“Looks like an ipod shuffle!”— @mikecon7634 on YouTube
“My biggest gripe with the design of it for me is I just see iPod shuffle.”— @hyenatron on YouTube
“I have a Coway ap-1512hh and the air filters aren't that expensive (to me), esp if I use the 3rd party ones. However, I don't think it can really keep up with cooking. It goes nuts sucking stuff in, and will ingest some of the smoke and oil, but the oil still gets all over the house.”— ZanyDroid on Reddit
“Their top rated is the Coway AP-1512HH Mighty and I really strongly recommend not getting this unit The box itself works great, but the replacements have a vile chemical smell.”— jenbanim on Reddit
“It had good reviews but for a nursery there is a light on top that shines red when it's purifying and blue if it senses that the air is clear, the blue light is very bright so we've had to cover it or turn it off when she's sleeping which obviously isn't ideal.”— nvdshfvh on Reddit
“I have a Coway Airmega AP-1512HH(W) and I'm not sure it's really cleaning anything. I hear it kick on but nothing feels any diffrent.”— tv6 on Reddit
“at level 2 it has fairly abysmal room cleaning performance compared with many of the models you mention at the end”— @joshuaremba8261 on YouTube
“If it’s on auto, ours get noisy when we’re gas cooking or my partner sears meat. If i was buying again, I don’t think I’d pick them up again but I haven’t explored the options.”— Xaenah on Reddit
“replacement HEPA filters for the 1512HH all have horrible reviews for giving off toxic fumes”— BikeQuestionsOnly on Reddit
“I have a standard Coway Mighty AP 1512HH, a top wirecutter pick for years, but it does nothing for food smells like cooked onions but its activated carbon filter is so featherweight tiny.”— the_sun_and_the_moon on Reddit
“I just got an Airmega AP1512HH and my asthma is sooo much worse, I never usually get this but I feel like something is sitting on my chest, I’m wheezy, cold, clammy and dizzy.”— shepherdofthewolf on Reddit
“I got 3 Coway 1512hh's to compliment my Winix D360s... they all 3 have that faint sweet chemical smell to them. It's not horrible or burning, but it makes the air feel less crisp”— wormraper on Reddit
Not complaints — practical notes from owners that didn't affect the score.
“Our Coway AP-1512HH turns back on after power loss.”— _takeshi_ on Reddit
“I see nothing wrong with buying a used purifier. There is that risk it doesn't work but you should be able to do a charge back from your bank. I bought my Coway Airmega 1512hh used. MA-40 has very similar CADR to Winix. I can't speak to it being loud. I haven't used one myself”— PurpleFairy11 on Reddit
“On my Coway AP-1512HH, for example, the carbon-coated fiber filter is always covered in junk when I clean it. They're at least worth vacuuming, even if you have one that doesn't actually get rid of smells.”— rdcldrmr on Reddit
“You can adjust the sensitivity? The 250 will be more powerful than the 1512hh, so it shouldn’t need to kick up a speed as often or for as long.”— Not_A_Red_Stapler on Reddit
“the de-odorization is carbon fiber based, so it may capture the odor, but not effective as charcoal based filter like 230 and 240. So the fiber-based carbon filter doesn't retain the odor much longer as charcoal carbon based filters”— dudalswn1993 on Reddit
“I just discovered it remembers its power state so I plugged into my Meross smartplug”— gaymer10101 on Reddit
“The Coway Airmega AP-1512HH is pretty similar to the Winix 5500-2 in terms of performance numbers. However the Winix uses carbon pellets in their carbon filter whereas the Coway uses carbon sheets. Carbon pellets are superior so if you are interested in odor/VOC reduction the Winix is the better machine.”— Cybernetic_Orgasm on Reddit
“We have the AP-1512HH and occasionally the sensor gets “dirty”. It’s on the side of the unit, there are instructions somewhere for how to open it up and clean it with a q-tip. Sometimes ours would stay red even though our air quality monitor would tell us everything was fine, cleaning it was the solution.”— Embarrassed-Sand2956 on Reddit