Coway is an innovative company from South Korea that makes products to help purify the home. They make a number of water and air purifiers. And in cities like Seoul and Hong Kong, air purifiers are a necessity.

The Coway AP-1512HH uses four filtering stages to clean the air, which is more than the standard two for air purifiers. The Coway also has a timer, an air quality indicator, and auto and eco modes to save on electricity.

The AP-1512HH is designed to handle pretty large spaces. It can clean rooms up to 528 square feet. That’s 23 feet by 23 feet, a huge amount of space for an air purifier!

The most important feature of the Coway is that it just looks so dang good. The sleek modern shell comes in your choice of black or white and seems to be modeled after a giant iPod Shuffle. If only the Coway could play music.

====>> In a rush? Click here to see the current price for a Coway AP-1512HH on Amazon

How Does the Coway AP-1512HH Work?

Like most air purifiers, the Coway AP-1512HH Mighty air purifier has a carbon filter and a true HEPA filter. But the Coway has two extra steps that many purifiers don’t have. There is a micro-mesh layer in front of the carbon layer and an ionizer behind the HEPA filter.

Coway AP-1512HH Mighty Air Purifier with True HEPA and Eco Mode

The micro-mesh layer is made of metal and is used to catch large particles, dust, and pet hair. This layer is easy to clean and wash and helps extend the life of the carbon and HEPA filters. This layer is also really easy to just take out and tap so that dust falls into the trashcan.

The next layer is the activated carbon filter layer. This layer catches larger particles like pollen and dust bunnies that make it through the mesh, but the main purpose is to clean the air of bad smells. Activated carbon is a universal filter and is well known for eliminating odors. In fact, there are some shoe insoles out there that use activated carbon to eliminate the odor of stinky feet.

Next, the air moves through the true HEPA filter. This is the layer that does the real heavy lifting by filtering out dust, pet dander, and even smoke. The U.S. Department of Energy tests all true HEPA filters to make sure they can filter 99.97% of particles greater than .3 microns. That means this filter is good enough to even trap cigarette and cigar smoke.

The ionizer is the last step the air passes through before being ejected back into the room. The ionizer negatively charges the air particles. These negative particles then bond with positively charged dust particles floating in the air, which then become too heavy and sink to the ground. With the ionizer running, you will notice there is more dust on all of the surfaces in the room. So why would you want that?

Well, because the whole purpose of the Coway AP-1512HH is to purify the air! So rather than dust floating in the air to be breathed in, it now settles on the floor, where it can be vacuumed up or dusted. The ionizer can be turned on or off if you don’t want to use that feature. Some people prefer not to use ionizers because they are concerned about them emitting ozone. The Coway AP-1512HH does emit a tiny amount of ozone when the ionizer is on, but the amount is undetectable.

How Do You Use the Coway AP-1512HH?

The Coway AP-1512HH Mighty air purifier has 5 speed settings; 3 speed settings, auto mode, and eco mode. Like most air purifiers, it has low, medium, and high speeds. The low speed is virtually silent and is ideal for watching movies, reading, or sleeping. Medium sounds like a low white noise. Some people will find this pleasant for sleeping and to use throughout the day. High sounds like a fan running on high and pushes enough air to feel like you’re sticking your hand out a car window. The ionizer can be used with any speed or on auto and eco modes.

The auto and eco modes work basically in the same way, and they are really clever. When on auto mode, the Coway AP-1512HH will adjust the speed of the fan based on how contaminated the air is. There is a little sensor on the side of the machine under a cover. You can clean the sensor every two months or so with a cotton swab to make sure it maintains accuracy. When it’s on auto mode, if it detects clean air for 30 minutes, then it will switch to eco mode and turn off until the air is contaminated again.

This is an extremely useful feature for people who just want to set it and forget it. In auto mode, you can save a lot of electricity and don’t have to worry about fiddling with the settings.

But how accurate could the sensor be? In auto mode, it will turn on if you blow out a candle nearby. That’s pretty impressive! The only downside to auto mode would be if it detected air pollution and turned on when you didn’t want it to, like if you were watching a movie.

On the top of the device, there is a light that tells you how dirty the air is. When the light is blue, the air is clean; when it’s purple, the air is moderately dirty; and when the light is red, the air is really dirty. This is a great way to actually watch the Coway AP-1512HH clean the air in your house as the color goes from red to purple to blue.

The Coway AP-1512HH also has a timer so that you can run it for given lengths of time and it will then shut off automatically. The timer can be set for 1, 4, or 8 hours. This is great for people who only want to run their air purifier while they are at work or asleep. It’s also great if you want to quickly clean up just one part of your house. Say you burned a chicken in your kitchen; no problem, just plug in the Coway and set it on high for an hour.

One great feature of the AP-1512HH is that it draws in air from the front sides and bottom and then shoots it out of the top. This is great because you don’t need to be too concerned about where you place it. So long as there is space in front of it and it’s clear over top, it should be fine. I prefer it when air purifiers eject air upwards; that way it isn’t blowing papers everywhere and the clean air can gently cascade down from the ceiling.

There are two more lights and a button on top of the machine. These are indicator lights to tell you when the two filters need to be replaced. You should only need to replace the carbon filter once every six months and the HEPA filter once a year. If you are on top of cleaning and vacuuming your filters, as well as washing your micro-mesh filter, then you can make these filters last even longer.

What Is the Cost of Filters, Where Do I Get Them, and How Often Do They Need to Be Changed?

When you buy your air purifier, I recommend you also buy a Coway replacement filter pack for AP-1512HH. The replacement filter pack is great because it is one package that comes with two carbon prefilters and a replacement HEPA filter. That is everything you need for a whole year in one package.

With most air purifiers you have to buy the carbon and HEPA filters separately, and it can get expensive. Coway’s replacement filter pack for the AP-1512HH can be bought at a few places online, including Bed Bath and Beyond and Amazon. It usually costs about $50, which is not bad for a year’s worth of clean air.

You can keep your filters clean by vacuuming them with a brush attachment. Just vacuum the micromesh filter once every two weeks, and then vacuum the carbon and HEPA filter every month.

What Is the Warranty?

The Coway AP-1512HH comes with a  3 years warranty.

How Does It Compare?

Coway AP-1512HH vs AP-1012GH

Both of these models are similar in many ways. Both have 4 stage filtration systems with an ionizer, both have a timer, and both have auto mode to detect and respond to air pollution. They are, however, different in key areas. The Coway AP-1012GH has a HEPA filter that lasts three years, while the AP-1512HH only lasts one year.

This makes the AP-1012GH more suited for the set-it-and-forget-it types. Another difference is the amount of space each is rated for. The Coway AP-1512HH is rated for 528 square feet, while the AP-1012GH is only rated for 355 square feet.

Coway AP-1512HH vs Rabbit Air

The Coway AP-1512HH and the Rabbit Air BioGS 2.0 have very similar filtering systems. Both have four-step filtering systems that use micro-mesh, activated carbon, HEPA filter, and an ionizer. One of the biggest differences is that the Rabbit Air has a more robust activated carbon filter.

That thicker filter should do a better job of scrubbing bad smells. Another difference is the price. The Rabbit Air is about $150 more expensive than the Coway. The filters are also more expensive, but they need to be cleaned less often.

Coway AP-1512HH vs Winix 5500

The Winix 5500 has one less filtering step than the Coway. With the Coway, you have a micro-mesh that protects the filters against large particles, whereas the Winix doesn’t use the micro-mesh. On the plus side, Winix claims that you only need to replace the HEPA filter every three years. They also say the HEPA filter is washable, but washing will severely reduce performance. I would only recommend washing it once or twice over the life of the filter.

The Winix is also built for smaller spaces at 360 square feet compared to 528 square feet for the Coway. One thing people seem to like about the Winix is that it comes with a remote that you can use to change fan speed and other settings.

Coway AP-1512HH vs GermGuardian AC4825

The GermGuardian uses a slightly different process to filter the air than the Coway. Unlike the Coway, the GermGuardian does not use an ionizer. The GermGuardian does have an extra step the Coway doesn’t have. After the carbon and HEPA filters, the GermGuardian uses UV light to kill all kinds of viruses and bacteria. This is great for people concerned about diseases as well as allergies.

But the Coway beats the GermGuardian on room size, which is only rated for 155 square feet. The Coway also has some features that the GermGuardian doesn’t, like auto mode that adjusts the cleaning power based on the contamination in the air.


The Coway AP-1512HH is a great air purifier for just about anyone. Its great features, like auto mode, ionizer, and large coverage, are enough to put this purifier on most people’s top ten list. I recommend the Coway AP-1512HH to anyone with large open spaces and anyone who wants to just set it and forget it with auto mode.

Where Can You Buy the Coway AP-1512HH and How Much Does It Cost?

The Coway AP-1512HH can be found online at most big box retailers. Amazon, Walmart, and Overstock all carry it. You can find the Coway for sale for anywhere from $180 to $250. Amazon usually has one of the best, if not the best, price. Click the link below to check the current price on

Click Here to See the AP-1512HH on Amazon

Was this page helpful?