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Coway Airmega Reviews: Best Model To Buy In 2022

Coway Airmega might be the new kid on the block in the air cleaning space, it is making a big splash with all the fancy gadgets available in the air filtration world. If you are looking for one, below is the breakdown of the latest and best Coway Airmega air purifiers. Check out each air purifier specification, features, filtration, noise level, pricing, maintenance, and verdict. Based on your needs, our comparison table will give you a clearer picture of which model you should buy, Let's get started.

2022 Best Coway Airmega Reviews

BUDGET-FRIENDLYBEST VALUEBEST PERFORM-ANCEPERFORMANCE
Coway Airmega 300 ReviewCoway Airmega 150Coway Airmega 400S Air Purifier Review
Coway Airmega 300 Air PurifierCoway Airmega 150 Air PurifierCoway Airmega 400S Air Purifier
Recommended Room Size
1,256 sq. ft. (117 m2)214 sq. ft. (20 m2)1,560 sq. ft. (145 m2)
CADR
Dust 260 cfm (442 m3/h)
Pollen 260 cfm (442 m3/h)
Smoke 260 cfm (442 m3/h)
Dust 246 cfm (418 m3/h)
Pollen 240 cfm (408 m3/h)
Smoke 233 cfm (396 m3/h)
Dust 350 cfm (595 m3/h)
Pollen 350 cfm (595 m3/h)
Smoke 350 cfm (595 m3/h)
Filtration
4-stage3-stage4-stage
Ratings
4.5 ★ out of 54.5 ★ out of 54.5 ★ out of 5
Amazon Price
$$$$$$$$$$$$$$$$
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** MSRP (Manufacturer's Suggested Retail Price)/ RSP (Retail selling price) is accurate at the time of posting.
^ Annual filter cost is calculated based on filter price and 12 hours of usage. Pricing could vary depending on air quality, usage frequency, and speed.
` The indicated online price guides as follows: $ = under $50, $$ = $50-100, $$$ = $101-200, $$$$ = 201-300, $$$$$ = $301-400, $$$$$$ = 401-500, $$$$$$$ = over $500.

Coway Airmega

Since 1989, Coway is a trusted Korea based company that ranked No. 1 in brand value growth by Interbrand's Best Korea Brands 2016. It develops, manufactures, and markets small home appliances including bidets, water purifiers, air purifiers under the Airmega brand. Coway products are globally recognized for their high standard build quality and innovative technology.

1. Coway Airmega 300 Air Purifier

Coway Airmega 300 Review

Coway Airmega 300 Features And Build Quality

The one that started it all. Coway Airmega 300 shares the same dimension as the other with 13.6 inches in diameter and 21.2 inches in height including the legs. Not the smallest and certainly not the lightest either at 21.4 lb in total weight. If you want to move it around for room to room purifying, this is not the model for you. A positive trade of Airmega 300 is the indistinguishable design from the higher range 400 series. The modernized casing is as practical as it looks with dual air inlets, a well-integrated top air outlet, and easy-to-use control. At the front, you have a distinctive "eye" circle air quality indicator that will display blue when indoor air quality is good, purple when air quality is at a moderate level, pink when is unhealthy, and red when is very unhealthy. On the whole, build quality and fitting are tight with no off-gassing detected. The extended 5-years warranty motor and electronic parts make it excellent for the long-haul.

Coway Airmega 300 unconventional button layout are separated into 2 sections. On the left, you will find a 1, 4, 8 hours timer that can be set to turn off the machine, a light button that will turn off all indicators and AQ lights. There is also pre wash (pre-filter) and max2 change button that is used after you have cleaned/ replaced the filter. On the right, you have a 3 selectable fan speed plus Smart Auto mode that will use higher speed when the indoor air quality drops. Otherwise, it will remain at low fan speed. There is also the low-noise sleep mode but that has to be activated manually.

Airmega 300 has the airflow output that would put other brands' “premium” model to shame. At max speed, it can reach up to 1,256 square footage with 2 air changes per hour or 628 square footage with 4 air changes per hour. Safe to say it will cover a lot of grounds including a full-size living hall, basement, double garage, master bedroom, kitchen, home office, and nursery home. The 260 cfm CADR (dust, pollen, smoke) is also equally good where no allergens would be too difficult for the air purifier. High ideal for an asthmatic or hyper-sensitive person that needs smooth and quick air cleaning.

Coway Airmega 300 noise level starts at a quiet 22 decibels all the way up to a light conversation 52 decibels. With auto and sleep mode enabled, it is great for day-to-day use including nighttime that needs absolute tranquillity. Power usage is good too between 6 to 57 watts based on the running speed. The built-in Smart Eco mode will leave the air purifier in idle mode when there are no changes in air quality to conserve energy.

Equipped with the same Max2 filter set from its series, Coway Airmega 300 first draws air in from both the left and right sides of the air intake. The dual pre-filter will trap lead dust, hair, and other large particles before they get into the way of the HEPA/ carbon filter. The Green True HEPA filter capture 99.999% of microorganisms as small as 0.01 microns including mold, pollen, dust mites, pet dander, germs, bacteria, and viruses. For chemicals and gases, the activated carbon filter will neutralize cooking smells, cigarette smoke, pet odor, and other household toxins like asbestos, radon, formaldehyde, and CO. All there are left is clean air that you can safely breathe in.

Of course, Coway Airmega 300 is not really a “starter” air purifier given its performance and premium price tag. Even though you can get one for around 400 dollars after discounts, not everyone can fork out that much. Compared with the selling price, Max2 filter replacement cost is far reasonable at 100 dollars annually. If you need Wi-Fi enabled feature, you will need to upgrade to the S variant. The autonomous Sleep mode is also missing; a feature available on all 400 series. Nevertheless, this is our pick of the bunch as Airmega 300 already over-delivered what most people need: a good HEPA air purifier.

Build Quality

Features

Coverage

Particle Filtration

Smoke Filtration

Price

Filter Cost

4.5

OUT OF 5

online price (US)**
±649.00 $$$$$$/ 7

(annual filter cost ±100)

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2. Coway Airmega 150 Air Purifier

Coway Airmega 150

Coway Airmega 150 Features And Build Quality

The cheapest and thinnest model from its lineup, Coway Airmega 150 is a beautiful and modern air purifier that everyone should get. Comes in at a 13.3 x 18 x 6.5 inches dimension and 15.4 lb weight in height, the compact design house a top LED ring AQI monitoring that displays real-time room air quality changes. The indicator light will change from blue when the surrounding indoor air is good, green when indoor air is moderate. yellow when indoor air is unhealthy, and red when indoor air is very unhealthy. Comes in white, green, and pink, build quality is top-notch with easy slide-out panels for filter changes and grabbing handle when you need to move it around for room to room purifying.

Coway Airmega 150 top control panel works and functions exactly like how it should. Press and hold the filter button for more than 2 seconds to reset the carbon or HEPA filter indicator light after you have successfully replaced the filter. Manually tweak the 3 fan speeds (Low, Medium, High) or leave it in Auto mode and let the air purifier decide what speed to run on. Sadly no timer and vital ion (ionizer) are available here due to the budget price point.

Like the many 150 variants, there is a decent mid-range airflow delivery rate that covers a 214 square footage of room size with 2 air changes per hour or every 30 minutes. Not spectacular but suitable for a large family that has a baby, children, or elderly on board. CADR passed our benchmark at an average of 200+ cfm for dust, pollen, and smoke. For everyday use, Coway Airmega 150 can be used in residential and commercial e.g. living room, basement, kitchen, bedroom, classroom, office, hotel, and nursery home. Noise level is at a whisper-quiet 22 decibels to a low 52 dB noise level. Ideal for work, sleep, or all occasions that needs absolute serenity. Powers consumption is at a low 6 watts to 57 watts depending on the operational mode. Like always, there is Eco mode that kicks in to stop the fan from spinning after 10 minutes of idling.

No surprise here, Coway Airmega 150 runs on the familiar 3-stage air filtration. When the air purifier pulls air in, the permanent pre-filter will block out large particles like dust, hair, and lint from passing through. The Green True HEPA filter capture allergens as small as 0.01 microns with a certified effective rate of 99.99%. The last-stage activated Carbon filter absorbs 99% of nearby smoke and odor pollutions in a household including food, tobacco smoke, pets diaper, VOCs, and other cleaning products. No ionizer is needed here as Coway Airmega 150 runs 100% on mechanical filtration.

At under 150 dollars after applied discount, Coway Airmega 150 is not your typical budget-friendly air purifier with subpar specifications. In fact, it is the complete opposite that offers impeccable air cleaning performance and a whole lot of features. On to the maintenance, the 40 dollars mandatory filter change is very cheap even for its class. You will need to replace the filter set on a yearly basis or when is worn out. When the time comes, the filter can be easily purchased online as availability is good. Drawbacks include the limited airflow, lack of timer, and Wi-Fi support that would otherwise push up the price. The lack of auto-sleep mode and real-time HEPA/ carbon filter monitoring might be the last straw of some. At the end of the day, Coway Airmega 150 is a budget-conscious air purifier that exceeded our expectations. This is a genuine starter air purifier.

Build Quality

Features

Coverage

Particle Filtration

Smoke Filtration

Price

Filter Cost

4.5

OUT OF 5

online price (US)**
±189.99 $$$/ 7

(annual filter cost ±100)

CHECK LATEST AMAZON PRICE

3. Coway Airmega 400S Air Purifier

Coway Airmega 400S Air Purifier Review

Coway Airmega 400S Features And Build Quality

You want power with the latest technologies, Coway Airmega 400S will cover it all. The modern yet sleek exterior shares the same platform as the 400 variant measuring 14.8 inches in size and 24.7 pounds in total weight. Height is at a tall 22.8 inches in height including the 4 sturdy legs. Upfront, there is the "cyclops" AQI that keeps you up-to-date on the room air quality. It will display blue/ green when air quality is good, green/ yellow when moderate, yellow/ pink when unhealthy, and pink/ red when air quality is unhealthy. At the sides, you have 2 removal panels for a quick filter change, and grab handles for easy carrying. As always, Coway Airmega is very well-built with no signs of off-gassing or poor workmanship spotted. The long 5-years warranty is a testament to its build quality.

Touching on Coway Airmega 400S eco-friendly features. You have a standard 3 manual fan speeds that let you cycle between low, medium, and high. The two real-time filter indicator bars (Pre Wash/ Max2) operate independently and will alert you to clean the pre-filter (usually monthly) or replace the Max2 filter set (yearly) when it is time. Sensor dependant auto sleep mode activates when the room is pitch black for more than 3 minutes. Auto mode kicks in at high speed when a large concentration of air pollutants is detected. ECO mode shut down the fan when the room air quality is good for 10 minutes and resume back operation when the air quality drops. The timer is the only function missing here replaced by the virtual IoCare app.

The highlight feature for Airmega 400S is the WiFi enabled function. Once you successfully pair it with the air purifier, download IoCare app via iTunes or Google Play to gain direct access to the full features. From monitoring room air quality, managing the fan speeds, enabling different modes, to checking filter life, everything can be done via your smartphone. You can even activate the 1, 2, 4, 8 hours pre-set timer, advanced scheduler, and voice command via Amazon Echo/ Alexa at the comfort of your bed.

Like 400, Coway Airmega 400S can clean indoor air up to 1,560 square footage at 2 changes per hour (30 minutes). Drop the air coverage to 780 square footage to double the air changes per hour to 4 or every 15 minutes. No problem using it in the bedroom, living room, kitchen, basement, apartment, or residential home. The strong airflow delivery rate also helps push the AHAM certified CADR to the next level. Anticipate a high 350 cfm for dust, pollen, and smoke. It can quickly remove airborne contaminants and restore back the clean air that you deserved. For references, the noise level is between a whispering 22 to 52 decibels and power usage is between 6 to 66 watts. Exactly the same output as Airmega 400 with Eco mode that helps converse energy and auto-sleep mode to keep the noise down.

Safe for a hyper allergic person, Coway Airmega 400S uses a sterile HEPA air filtration setup that is 100% ozone-free. The dual pre-filter traps incoming PM10 pollutants including the common dust while protecting the HEPA filter. The Green True HEPA filter capture microscope particles as small as 0.01 microns with a removal efficiency of 99.999%. This includes biological pollutants such as mold, mildew, pollen, pet dander, bacteria, and viruses. The charcoal-based activated carbon filter removes smoke and odors via chemical adsorption e.g. wood smoke, VOCs, radon, carbon monoxide, tobacco smoke, pesticides, microbes before releasing clean air back out. Again, there is no optional ionizer in the filtration. Mechanical all the way.

Coway Airmega 400S air purifier is the top-tier model with WiFi-enabled. Naturally, the price will be on the higher side close to 600 dollars after an online discount. The little price bump compared with the non WiFi variant but worth every penny for those that need the advanced features. The lack of an ionizer or UV-light filtration might not go well with some given its price tag. Max2 filter replacement cost is around 130 dollars which are fair for its segment but not everyone can do with the high recurring fees. Consider the smaller but cheaper 300S if you need identical features and air filtration.

Build Quality

Features

Coverage

Particle Filtration

Smoke Filtration

Price

Filter Cost

4.5

OUT OF 5

online price (US)**
±749.00 $$$$$$$/ 7

(annual filter cost ±130)

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4. Coway Airmega AP-1216L Air Purifier

Coway Airmega AP-1216L Air Purifier

Coway Airmega AP-1216L Features And Build Quality

The first and only tower air purifier on the list. Coway Airmega AP-1216L is a high-performance, sleek tower air cleaner at only a fraction of the cost. At a rather bulky 10.5 inches in width, 32.7 inches in height, 10.7 inches in depth, it is only meant for floor usage even with its slim form factor. The 13.9 pounds weight is light enough to be carried by hand when there is a need to move it elsewhere. Build quality is solid like other more expensive models with no off-gassing detected. The extended 3 years warranty covers all internal parts i.e. motor and electronic board excluding the filters.

Back to the basics. Coway Airmega AP-1216L uses an easy-to-operate touch control at the top. Cycle between speeds I, II, and III or use the sensor linked auto mode. Auto mode will run at an optimized speed to match the surrounding air quality. The flexible 1, 4, 8, 12 hours timer can be scheduled to turn off the machine before you hit the sack. The ionizer button activates/ deactivates the vital ions while the light button dim down indicator lights. Right at the center, the circle air quality indicator light displays blue when the air is clean, purple when it is medium polluted, and red when the air is highly polluted. Ending with Airmega specialty, you have a deodorization filter indicator that alerts you to change the carbon filter every 3 months and another separate HEPA filter indicator that alerts you to change the filter annually.

Cater to small to medium room sizes, Coway Airmega AP-1216L air purifier can accommodate up to 330 square footage of coverage. Ideal for bedroom, office, and smaller home e.g. apartment, studio, dorm. CADR is highly impressive compared with the subdued airflow output. You're getting a strong 235 cfm for dust, 262 cfm for pollen, and a 213 cfm for smoke. The consistent airflow is perfect for baby, children, elderly, or anyone with hypersensitivity. Noise level is whisper quiet and one of the best on the list. When running in auto mode, anticipate a 21-52 decibels output depending on the speed it is running. Energy usage is around 49.3 watts per hour before accounting for Eco mode. With Eco mode, expect an improved efficient operation that stops the fan from spinning after 30 minutes of clean air. Save to say, you can leave Coway Airmega AP-1216L running in the background without having to constantly monitor its progress.

Like AP-1512HH, Coway Airmega AP-1216L is powered by a 4-stage HEPA filtration system that is safe and effective. The washable pre-filter traps large dusty particles and protects the HEPA filter from being damaged. Next, the HEPA filter capture 99.97% of microscopic particles in the air as small as 0.3 micrometers e.g. mold, pollen, pet dander, and germ. The deodorization filter reduces smoke, odors, and chemical fumes including, volatile organic compounds, radon, CO. The optional Vital ions pull down pollutants in the air and Airmega AP-1216L will capture it as long as it is within the vicinity.

While not the biggest performance in the list, at less than 200 dollars selling price, Coway Airmega AP-1216L is one of the bargains in this list. You're getting the exact same features as the big boys save and except for the light sensor. On an even brighter note, the annual filter replacement set (HEPA + 4 carbon filters) is only 49 dollars. The cheapest, maintainable high-performance tower air purifier on sale. As long as you can find a spot to place Coway Airmega AP-1216L, it will enjoy worry-free ownership for many years to come.

Build Quality

Features

Coverage

Particle Filtration

Smoke Filtration

Price

Filter Cost

4.5

OUT OF 5

online price (US)**
±199.99 $$$/ 7

(annual filter cost ±48)

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5. Coway Airmega AP-1512HH Mighty Air Purifier

Coway Airmega AP-1512HH Mighty Air Purifier Review

Coway Airmega AP-1512HH Mighty Features And Build Quality

Coway Airmega AP-1512HH air purifier might not be the latest model from the brand, It has gone through a couple of updates to keep it up to date with the time. The simple boxy shape stands at a rather compact 16.8 x 18.3 x 9.6 inches dimension and light 12.3 lb weight. You can effortlessly carry it around for room to room purifying. Available in black or white, the front panel is occupied by a circular budge while air quality indicators are hidden right at the top. Air inlets are located on both sides with a large air outlet right at the back. Coway Airmega AP-1512HH comes standard with a 3-year manufacturer's limited warranty and is ETL, CARB Certified. Fitting and build quality is exceptional despite the shorter warranty period.

Coway Airmega AP-1512HH air purifier controls are easy to use with a nice tactile feel. With 5 dedicated buttons to fiddle around with, you can cycle between the 3 speeds or activate the ever-useful auto mode. In auto mode, the air purifier will manage the fan speed autonomously based on surrounding air quality. Unique in Airmega AP-1512HH, there is a vital ionizer that can be enabled or disabled at any point of the purification. The 1, 4, 8 hours timer can be set to turn off the device after an interval time. The filter reset function will reset either the Odor or HEPA filter indicator. Used only after you have replaced the filter. You can even adjust the built-in sensor sensitivity between 1, 2, and 3 (recommended).

Coway Airmega AP-1512HH can cover up to 326 square footage of room space. Not the best considering the other options here, it will still fit well in a medium room size like bedroom, small living room area, kitchen, or home office. The consistent airflow delivery rate also reflects well with the CADR. Coway Airmega AP-1512HH outputs an impressive CADR at 246 cfm for dust, 240 cfm for pollen, and 233 cfm for smoke. You will enjoy clean, fresh air with just 30 minutes of runtime. Guaranteed.

Coway AP-1512HH noise level is on par with other Airmega air purifiers here despite the lower airflow output. Expect a sleep-friendly 24.4 decibels when running at the lowest speed to a reasonable white noise 53.8 decibels. You can use it all day with minimal noise distraction even when running at a higher speed. As an Energy Star certified model, the power consumption is good that will not burden your electricity bill. Coway Airmega AP-1512HH also comes standard with ECO mode that will leave the fan in idle mode when air quality is good for more than 10 minutes.

Coway Airmega AP-1512HH air purifier is powered by the reliable 4-stage filtration that consists of a pre-filter, True HEPA filter, Deodorization filter, and Vital Ionizer. The outer pre-filter captures large particles like dust, hair while protecting the HEPA filter. As the permanent pre-filter will get clogged quickly, you can remove it and wash it without damaging the filter. The HEPA filter captures 99.999% of fine particles as small as 0.01 microns like mold, pollen, mildew, lead dust, and pet dander. The deodorization carbon filter removes smoke and toxic gases including the notorious VOCs. Finally, the vital ionizer releases natural ions that attach to airborne particles in the air, causing them to fall and for the filter to capture. Ionizer is safe and effective but for those that are not comfortable using it, you disable it at any time.

Price under 200 dollars after discount, Coway Airmega AP-1512HH is arguably the most underrated air cleaner currently on sale. You're getting the complete package with decent performance at an affordable price point. Another strong suit of AP-1512HH is the low filter replacement cost of under 50 dollars. You will not have to worry about the high recurring fees for years to come. The only annoying thing is the deodorization carbon filter that requires replacing every 6 months instead of annually. Not a deal-breaker.

Build Quality

Features

Coverage

Particle Filtration

Smoke Filtration

Price

Filter Cost

4.5

OUT OF 5

online price (US)**
±229.99 $$$$/ 7

(annual filter cost ±47)

CHECK LATEST AMAZON PRICE

6. Coway Airmega 250 Air Purifier

Coway Airmega 250

Coway Airmega 250 Features And Build Quality

The slimmest, high-performance air purifier that replaces the old, bulky one. Coway Airmega 250 air purifier is the latest addition from the brand that brings a lot to the table. Featuring a sleek exterior that stands at only 18.5 inches in width, 19.7 inches in height, 8.3 inches in depth, and 20.5 pounds weight, you can place it comfortably in a home without having to worry it will topple down at the slightest push. Further complimenting the design is the convenient practical EZ release design filter care. When there is a need to clean the pre-filter, simply slide it out, vacuum it, and leave it air dry. Fitting the build quality is on par with the rest which means it will withstand daily 24x7 operation. The standard 3 years limited warranty protects against any unwanted manufacturing defects.

With no remote control on sight, Coway Airmega 250 purifier operates solely on the top control panel. Choose from the standard 3 fan speeds (low, medium, high) or Rapid Mode that boosts max air circulation to quickly deal with unhealthy indoor air. Auto mode will auto-select the fan speed to adapt to its surrounding air quality via the pollution sensor. The air quality monitor illuminates in blue when air quality is good, green when moderate, yellow when unhealthy, and red when air quality is very unhealthy. Auto Sleep mode activates when there is no light source to help converse energy and reduce noise output. The timer can be programmed to turn off the air purifier after 1, 4, or 8 hours runtime. A separate pre-filter indicator help reminds you to clean the pre-filter when it is clogged while the Max2 filter change indicator reminds you to replace the disposable filter when it is time.

With a wide air inlet and outlet, Coway Airmega 250 can easily cover 930 square footage at 2 air changes per hour or 465 square footage at 4 air changes per hour. Ideal for large room sizes like an apartment, single-story home, or nursing home that falls within the recommended room size. Clean air delivery rate shines too with a high 249 cfm for dust, 261 cfm for pollen, and 230 cfm for smoke. As long as the air purifier is running 24x7, no airborne allergens will be able to get away from Coway Airmega 250.

Coway Airmega 250 is more than adequate for night use thanks to its consistent whisper-quiet 22 decibels to a max 54 decibels. When all lights are off, Sleep mode will kick in and the air purifier will run at the lowest speed so you can sleep soundly and enjoy clean air free from airborne allergens. Power consumption might peak at 64 watts, it will run much lower than that thanks to the auto Eco mode. Eco mode will stop the fan from spinning after 10-30 minutes of clean air. You will not feel a pinch in the utility bill.

Coway Airmega 250 is powered by a 100% ozone-free mechanical 3-stage filtration designed for an asthmatic or hypersensitive person. The initial pre-filter traps PM10 particles like dust, hair, lint and protects the HEPA filter from being damaged. You can wash and reuse the pre-filter every time the pre-filter indicator light is lit. The Green True HEPA filter traps 99.999% of microparticles down to 0.01 microns such as lead dust, mold, pollen, mildew, pet dander, bacteria, and viruses. The last-stage activated carbon filter neutralizes 99.99% of harmful fumes from cigarette smoke, volatile organic compounds, fuel, wood fire before releasing clean air out.

Priced under 300 dollars, Coway Airmega 250 is closing to the premium price range occupied by Airmega 300. At this price, you're getting the same high-performance filtration, updated design with a much slimmer profile. Coway Airmega 250 is also very maintainable with a reasonable filter replacement cost of around 79 dollars. Cons include the odd AQI placement and random fan noise that will appear on and off. Not enough to deter us from recommending this model to you.

Build Quality

Features

Coverage

Particle Filtration

Smoke Filtration

Price

Filter Cost

4.5

OUT OF 5

online price (US)**
±399.99 $$$/ 7

(annual filter cost ±79)

CHECK LATEST AMAZON PRICE
BACK TO RECOMMENDATION

 

Coway Airmega 400 Air Purifier

Coway Airmega 400 Review

If you are still not impressed with the power of the 300 series, perhaps Coway Airmega 400 air purifier can be the ultimate answer. The beautiful, larger exterior is measured at a dimension of 14.8 inches and 22.8 inches in height. The height is largely contributed by the 4 sturdy legs that are fixed instead of casters. The 24.7 pounds weight is on the heavier side but still manageable. This is not the air purifier you want to constantly move it around. The front LED air quality indicator is bright and shows real-time indoor air quality in full colors. The side air inlets panel are wide and easily removable for an easy filter change. Overall, the build quality is rock solid with tight-fitting that guarantees no air bypass. The 5 years warranty covers motors, sensors, electronic parts except for disposable filters.

Airmega 400 uses a 100% mechanical filtration that outputs zero ozone and harmful byproducts. The dual pre-filter pull in large PM10 particles from both sides and protect the HEPA filter from being damaged. For fine particles that manage to pass through, the Green HEPA filter would capture 99.999% of microscopic allergens like mold, pollen, pet dander, germs, bacteria, and viruses as small as 0.01 microns. The activated carbon filter neutralizes smoke and odors from food, cigarette, VOCs, radon, CO via chemical adsorption. The air cleaning cycle will continue until the room is completely free of pollutants.

As an upper-tier model, Coway Airmega 400 supports a wider 1,560 square footage air coverage at 2 air changes per hour or every 30 minutes. Increase the air changes per hour to 4 or every 15 minutes and you’re still getting an extensive 780 square footage of air cleaning space. Clean air delivery rate also receives a healthy bump up to 350 cfm CADR for dust, pollen, and smoke. The high airflow distribution means there is no limit to where you can use Airmega 400. You can even use it as a whole-house air purifier by placing it in the center.Despite the increase in power, Coway Airmega 400 noise level is at a silent 22 decibels to a subtle 52 decibels. Leave it in Sleep mode to reduce noise output and speed as intended for night use. Likewise, the power usage is still kept at an efficiency level between 6 to 66 watts hourly. Smart Eco mode is standard here that automatically conserves energy by stopping the fan when room air quality is good for 10 minutes straight.

It might have the identical offering as 300, Airmega 400 comes with unique features in its series. First off, you’ll get 2 real-time filter lifespan indicators for HEPA and carbon filters. Only replace the filter that needs replacing as indicated. Second, there is an auto Sleep mode that activates automatically when lights are out for 3 minutes. Under sleep mode, the fan speed will lock to low with no indicator light including the AQI. Third, an exclusive full black version to go for that stands out from the pack. Other standard features include 3 fan speeds (Low, Medium, High), auto mode, 3 pre-set timers, and filter change indicator.

There is a price for all the nifty stuff and it doesn’t come cheap. A brand new Coway Airmega 400 air purifier comes in at about 500 dollars after applying the much-needed discount. If you want the Wi-Fi S version, you have to top up even more. Other things to consider are the bigger and heavier body compared with the counterpart 300/ 300S and higher power usage with no extra filtration advantage. If size and pricing are not the hindering factors, the larger Coway Airmega 400 with added performance boost could be the one you have been looking for.

What To Look For In Coway Airmega Air Purifiers?

There is no doubt Coway Airmega purifier can improve your indoor air quality when use correctly. Picking the wrong model can impact the overall effectiveness of the air purifier. To help you identify which Airmega you should buy, here are the key features you will need to look closely at.

  • Dimension and weight - There are different Coway Airmega air purifiers that vary in size, design, and color. While bigger usually is better, pick a model that can be placed in your intended location without being too obstructive. Go with a lighter model if you need to constantly move it around the house.
  • Pricing - Depending on the series, Coway Airmega's price varies from 150 dollars to 600 dollars (after discount). Regardless of which model you go for, you're getting a Korean-made, HEPA filtration with excellent airflow performance.
  • Recurring filter cost - Coway Airmega filter maintenance costs are in the mid-tier range that will not exceed 130 dollars under normal circumstances. The smaller the filter size, the cheaper it is to replace.
  • Air filtration - All Coway Airmega air purifiers come standard with a pre-filter, a certified 99.999% efficiency Green True HEPA filter, and an activated carbon filter. Never settle for less.
  • Room size - Suitable for small to large room sizes. Coway Airmega air purifiers can cover from 214 to 1,560 square footage of space. Consider where you intend to use the air purifier and pick a model based on the recommended room size.
  • Clean air delivery rate (CADR) - A numerical metric developed by AHAM to standardize the air cleaning measurement. The higher the ratings, the more airborne impurities will be removed. Most Coway Airmega purifiers exceeded our minimum CADR threshold.
  • Warranty and after-service - All Rabbit air purifiers come with a standard 5-year limited warranty that covers the motor and electronic parts. Every model is also backed by a 30 days money-back guarantee. After-service includes U.S. based customer support, email, and live chat via the official website.
  • Noise and power usage - Coway Airmega air purifiers are designed to be efficient and silent with noise levels under 60 decibels. Suitable for all-day use.
  • Usability - Coway Airmega air purifiers are well-equipped depending on the variant. Standard features include a timer, pollution sensor, auto mode, sleep mode, and filter lifetime indicator. Premium features include WiFi-enabled, remote control, auto-sleep mode (via light sensor), and real-time filter usage indicator.

Is Coway Air Purifier Good?

Yes, Coway Airmega purifier is a good brand that releases high-performance HEPA air purifiers. It is well-built, comes with tons of features, and mainly uses mechanical filters to clean the air. However, Coway Airmega purifiers are not the cheapest to own and maintain. Prepare to pay a premium price for the top-tier models.

How Does Coway Airmega Work?

Coway Airmega works through the IoCare mobile app available in both iOS and Android. Using a mechanical three-stage air filtration system, air will be pulled in via the fan motor and the permanent pre-filter will block PM10 particles like dust hair, lint from passing through. The Green True HEPA filter captures 99.999% of microscopic particles in the air like mold, mildew, pollen, pet dander, bacteria, and viruses. The activated carbon filter absorbs smoke, odors, toxic fumes such as volatile organic compounds (VOCs), CH3CHO, and NH3. Lastly, clean air will be released out and the filtration cycle will continue until the air is free of pollutants.

Does Coway Airmega Produce Ozone?

Coway AirMega 300, 300S, 400, and 400S air purifiers do not produce ozone as they do not have an air ionizer built-in. It uses 100% mechanical filters that consist of fine mesh pre-filters, True HEPA filter, and honeycomb activated carbon filter to clean the air. The only exception is Coway Airmega AP-1512HH that emits a very insignificant amount of ozone under 0.01 ppm when the onboard ionizer is used. It is compliant with FDA and California Air Resources Board (CARB) ozone-safe emission levels under 0.05 ppm.

How Do You Turn Off Coway Ionizer?

Coway Airmega AP-1512HH comes with an ionizer feature with a dedicated on/ off button. Press it once to turn on the ionization feature, again to turn it off. Press and hold down the ionizer button for 3 seconds will also turn off the air quality indicator light. You should keep the ionizer on as it can assist with indoor air cleaning.

Is Breathing Ionized Air Safe?

The negatively charged ions produced by air ionizers are safe to breathe in and harmless to our body. The diffuse negative ions will attract and pull down harmful particles in the air. This will create a safer environment without the harmful particles exacerbating lungs irritation and respiratory infections.

How Does Coway Airmega Detect Air Quality?

All Coway Airmega purifiers come with built-in sensors used to detect nearby air quality. When the air purifier is on auto mode, it will only increase the fan speed when it detects a drop in air quality. The sensor dependant air quality indicator (AQI) will change from blue color (good air quality), purple (moderate air quality), pink (unhealthy air quality), to red color (very unhealthy air quality).

Where Do You Put The Coway Air Purifier?

For the best performance, we recommend placing Coway Airmega purifier in the middle of the room for an even airflow distribution. The bedroom is the best location for placement as you will spend most of your time there. You could also place Coway Airmega purifier anywhere that needs clean air. Remember to leave some 2 to 4 feet of space between the wall to ensure there is no airflow disruption. Do not place it next to home appliances like TV, microwaves because of the electromagnetic interference. Avoid extremely damp areas e.g. bathroom as the high humidity would damage the air purifier electronic parts and filters.

How Long Do Coway Filters Last And When To Replace It?

Coway Airmega Max2 filters have a lifespan of 12 months under normal usage. You should replace the HEPA filter on a yearly basis or when the filter change indicator light lets you know it is time to replace the filter.

How Do I Replace The Filter In Coway Airmega Air Purifier?

  1. First, turn off and unplug your air purifier.
  2. Take out the panels by pressing and pulling on the top tabs. Remove and discard the old filters.
  3. Remove the plastic sleeves from the new filter before inserting the new filter. The permanent pre-filter should be inserted last.
  4. Close the panels and let the air purifier test run for an hour.
  5. Repeat the above steps if there is any weird sound that stops the air purifier from functioning properly.

Are Coway Filters Washable?

Only the permanent pre-filter is washable. Vacuum or rinse it with lukewarm water every 1-3 weeks to remove the collected dust particles. Let it air dry completely before inserting it back. The HEPA filter/ deodorization carbon filter cannot be cleaned and reused. Your only option is to replace them when it is dirty.

How Do I Turn Off And Reset Coway Airmega?

Press the power button to turn on or off Coway Airmega. To reset Coway Airmega pre-filter indicator light after cleaning the filter, press and hold the dedicated button for 2-3 seconds. The same goes for the Max2 filter indicator light. Press and hold the button for 2-3 seconds to reset the indicator after you have replaced the filter.

How Do You Clean A Coway Sensor?

You can clean the sensor with a cotton swab/ q-tip soaked in water or alcohol. Gently scrub the lens in a circular motion until there are no more visible dust particles. Doing so will resolve the air quality indicator stuck on constant red.

Can I Use A U.S. Spec Coway Airmega Purifier In Other Countries?

Using a U.S. bound Coway Airmega in other countries would effectively void the manufacture warranty thus not recommended to do so. In theory, a step-up or down transformer would be able to power Airmega with different power requirements. In reality, there are far too many cases where the air purifier is damaged by irregular voltage and AC frequency.

Can I Connect Coway Airmega Air Purifier With Multiple Smartphones?

Yes you can and it’s open for Android or Apple smartphones. Download the IoCare app through iTunes or Google Play and sign in with the same credentials.

What Happens If I Change My Router? Do I Need To Redo The Airmega Pairing?

That depends if you are using the same SSID and/ or password for the new router. No changes are needed if everything remains the same, otherwise please delete the current air purifier from your IoCare app and redo the pairing steps again.

Can’t Connect Coway Airmega With My Phone After Following All the Steps.

Airmega can only connect to the 2.4GHz band. Please check whether your Wi-Fi router supports the 2.4GHz band (through SSID network or on the router label itself). There are two common frequency bands used in Wi-Fi communication: 2.4GHz and 5GHz. Most modern routers support both bands and can be set to broadcast on 2 different networks or set to broadcast only one band.

Why Is Coway Airmega WiFi Connection Cut Off Frequently?

There could be WiFi interference that causes the poor Wi-Fi connection. Try moving the air purifier closer to the router/ modem or reduce the number of connected devices on the WiFi network. Restarting your router should resolve most issues related to internet connectivity issues.

Why Is Coway Airmega WiFi Indicator Light Blinking?

If the WiFi light is blinking: No connection has been made or pairing is the progress. If the WiFi light is constant: Pairing successful and you should hear a beeping sound. If there is no WiFi light: Wi-Fi is off.

Coway Airmega Does Not React According To The Timer Or Scheduler Settings In The App.

Most likely scenario is the incorrect time zone on the app or timer/ scheduler has been changed by another user. Also note that the timer will always reset every time you turn off Coway Airmega.

References

Compare Coway Airmega Air Purifiers

NoImageAir PurifierOnline Price (Amazon)ScoreFiltrationCoverageFan
Speed
DimensionWeightDust CADRPollen CADRSmoke CADRPre-filterHEPA filterCarbon filterIonizerUV lightOther filterAll-in-one filterNoise levelPower outputTimer/ SchedulerSensorsWarrantyAuto modeRemote controlChild lockENERGY STARWi-Fi/ BTBluetoothAQIFilter indicator
1Coway Airmega 300 ReviewCoway Airmega 300 Air Purifier

$$$$$$

CHECK PRICE
4.54-stage1,256 sq. ft. (117 m2)3
13.6 x 21.2 x 13.6 in
(34.5 x 53.8 x 34.5 cm)
21.4 lb (9.7 kg)260 cfm (442 m3/h)260 cfm (442 m3/h)260 cfm (442 m3/h)
Pre-filter (2 pack)
Permanent
+- 25
Max2 (Green True HEPA filter)
1 year
Max2 (Activated carbon filter)
1 year
-
-
Max2 Filter
1 year
+- 99.99
22-52 dB6 -57 W1, 4, 8 hoursPollution sensor5 years
2Coway Airmega 150Coway Airmega 150 Air Purifier

$$$

CHECK PRICE
4.53-stage214 sq. ft. (20 m2)3
13.3 x 18 x 6.5 in
(33.8 x 45.7 x 16.5 cm)
15.4 lb (7 kg)246 cfm (418 m3/h)240 cfm (408 m3/h)233 cfm (396 m3/h)
Washable pre-filter
Permanent
Green True HEPA filter
1 year
Deodorization carbon filter
1 year
-
-
Coway Airmega 150 Replacement Filter
1 year
+- 40
22 - 52 dB6 -57 WNoPollution sensor3 years
3Coway Airmega 400S Air Purifier ReviewCoway Airmega 400S Air Purifier

$$$$$$$

CHECK PRICE
4.54-stage1,560 sq. ft. (145 m2)3
14.8 x 22.8 x 14.8 in
(37.6 x 57.9 x 37.6 cm)
24.7 lb (11.2 kg)350 cfm (595 m3/h)350 cfm (595 m3/h)350 cfm (595 m3/h)
Pre-filter (2 pack)
Permanent
+- 25
Max2 (Green True HEPA filter)
1 year
Max2 (Activated carbon filter)
1 year
-
-
Max2 Filter
1 year
+- 129.99
22 - 52 dB6 - 66 W1, 2, 4, 8 hours (App), SchedulerPollution sensor, Light sensor5 years
4Coway Airmega AP-1216L Air PurifierCoway Airmega AP-1216L Air Purifier

$$$

CHECK PRICE
4.54-stage330 sq. ft. (31 m2)3
10.5 x 32.7 x 10.7 in
(26.7 x 83.1 x 27.2 cm)
13.9 lb (6.3 kg)235 cfm (399 m3/h)262 cfm (445 m3/h)213 cfm (362 m3/h)
Washable pre-filter
Permanent
True HEPA filter
1 year
Activated carbon filter
3 months
Vital Ion
-
-
Coway Airmega AP-1216L Replacement Filter
1 year
+- 48
21 - 52 dB(A)49.3 W1, 4, 8, 12 hoursPollution sensor3 years
5Coway Airmega AP-1512HH Mighty Air Purifier ReviewCoway Airmega AP-1512HH Mighty Air Purifier

$$$$

CHECK PRICE
4.54-stage326 sq. ft. (30 m2)3
16.8 x 18.3 x 9.6 in
(42.7 x 46.5 x 24.4 cm)
12.3 lb (5.6 kg)246 cfm (418 m3/h)240 cfm (408 m3/h)233 cfm (396 m3/h)
Pre-filter
Permanent
True HEPA filter
1 year
Deodorization filter
6 month
Vital Ionizer
-
-
3304899 Replacement Filter
1 year
+- 47.17
24.4 - 53.8 dBA4.9 - 77.8 W1, 4, 8 hoursParticle sensors3 years
6Coway Airmega 250Coway Airmega 250 Air Purifier

$$$

CHECK PRICE
4.53-stage930 sq. ft. (86 m2)3
18.5 x 19.7 x 8.3 in
(47 x 50 x 21.1 cm)
20.5 lb (9.3 kg)249 cfm (423 m3/h)261 cfm (443 m3/h)230 cfm (391 m3/h)
Washable pre-filter
Permanent
Green True HEPA filter
1 year
Activated carbon filter
1 year
-
-
Coway Airmega 250 Max2 Filter
1 year
+- 79
22 - 54 dB(A)64 W1, 4, 8 hoursPollution sensor3 years