So like many others in the Bay Area, we have been hit with unprecedented air levels during the Camp Fire disaster, and levels of particles in the air reached 263 on Friday which is “Hazardous” and all local schools were closed a few days ago. I had my 79-year old mother and a cousin with a 2-year old toddler coming to stay for the holidays, as well as two girls ages 9 and 11. We ended up telling the family with the toddler to stay clear of the area. My mom did fly in and we have masks we are wearing if we go outside.
After researching for hours and hours and asking my friends for advice, I went ahead and purchased this air purifier. I have been using it for a few days now. It shipped 1-day from Amazon and I immediately put it to use. After an evening of use, my scratchy throat was better the next day. And the indoor air felt clean and refreshed. As if the window was opened. Here were my main considerations:
• Size of Room
• Effectiveness of Machine
• Size and Look of Machine
• Cost of Machine
• Set up / Ease of Use
• (Noise Level)
SIZE OF ROOM: The first thing you need to identify is the actual size of the room you are trying to clear. My living room, dining room and kitchen are all in one open space so the cooking smells and airflow are an issue. Many of the air purifiers recommended only clear 300’ of space. My room is at least 700’ large. Ceiling height should also be a consideration. And ideally get one that handles a room much larger (within reason) so your purifier does not have to run on high the entire time.
EFFECTIVENESS: I believe a dual filter system is the minimum for pure air cleaning. We already had the Dyson fan with HEPA filter. This is one level. Adding in an activated carbon filter for smells is another. One machine that was pricey (Molekule $799) has a third level of UV light to kill bacteria which is critical if you have mold. Maybe even if you have dogs. The UV light was overkill for my current needs and also more expensive so I opted for “no” this time around. Molecule also has 3, 6 or 9 month financing which was intriguing but they were out of same day delivery so I opted to go through Amazon. There are different filter consideration is based on air cleaning (HEPA), smell cleaning (CARBON), and bacteria/mold cleaning (UV / Ozone’s). There is an added consideration for pet dander.
SIZE and LOOK: I almost bought the taller thinner machine that had customized fronts you could add — but it was too expensive to ship next day. So I did more research and decided on this model. It is LARGE. Like a small side table that unfortunately does not double as a side table because you need to keep the top clear. I personally like the way it looks and it was so easy to set up, plug in, and immediately went to work — it was a wonderful experience. It is clean looking, quality materials and the added lights and sounds really make it high end.
COST: It was not cheap, but in the end was mid-level pricing compared to the other machines that cleared the same area. Over 1200 feet so I am covered.
SET UP / EASE OF USE: I took this unit out of the box, took off the plastic wrap, and took the filters out of plastic bags one set on each side of the machine. Then I plugged it in and started working immediately. I loved the sound feedback when you push the buttons going up and down with the airspeed and also easy to set on auto. I also appreciate the fact that air is filtering from both sides of the unit. For this reason, when in use, It does need at least one and a half to 2 feet of open space on each side of the unit, so it does need to be pulled out when in heavy use.
NOISE LEVEL: I did not really care about the noise level but it is quiet and on AUTO now and it feels cool and peaceful in the room.
BONUS: The last reason I bought it is because it has an auto sensor that automatically kicks up the fan speed when there are more air particulates in the air. This is traditionally during cooking but in my case it was handy when doors would open and closed during this fire season. When I first plugged it in it was purple and took about 10 or 15 minutes to turn blue. This is after one week of no open doors or windows or airflow inside during the fires. I let my neighbor borrow it and it took about half an hour to clear his space which was read and then bright pink and purple and finally turned blue. I wondered if it just turned a different color when it was plugged in because when I brought it back into my unit it turned purple for about 15 minutes before turning blue again. Then, I made some popcorn in during the cooking of the popcorn the unit turned purple again and clean out the air for about half an hour. I found out after meeting the materials you can change the sensitivity level of the particular sensor, but now I believe it is accurate and helpful. I love having the color feedback to confirm the air is clear.
I also bought a Levoit smaller fan for the bedroom at the same time and I have to say it does barely anything. And it feels cheap compared to the Conway. I am going to send it back. I am definitely keeping this Conway Airmega and highly recommend it to other people with the same considerations. I will continue to test the sensitivity level of the sensors and will post more updates if anything new arises.
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From the brand
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Our obsession with helping people live happier, healthier lives began in 1989.
Coway has become a global leader in intensive research, engineering and innovation, amassing over 5,000 intellectual property rights in all. We believe every element needs to be examined, researched, understood, tested and retested. We obsess over every detail, so Coway products can help transform your space into health sanctuary.
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From the manufacturer
Coway Airmega Premium Line-up
 Airmega 400 |  Airmega 400S |  Airmega 300S |  Airmega 300 |  Airmega 250 |  Airmega Icon |  Airmega ProX | |
|
Customer Reviews
|
6,017
|
6,017
|
6,017
|
6,017
|
787
|
14
|
6,017
|
|
Price
| $430.09 | $488.59 | $429.14 | $330.26 | $301.19 | $549.00 | $618.67 |
|
Coverage
| 1,560 sq. ft. | 1,560 sq. ft. | 1,256 sq. ft. | 1,256 sq. ft. | 930 sq. ft. | 649 sq. ft. | 2,126 sq. ft. |
|
App & Alexa & DRS
| ✘ | ✔ | ✔ | ✘ | ✘ | ✘ | ✔ |
|
Auto Mode
| ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
|
Eco Mode
| ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
|
Sleep Mode
| Automatic | Automatic | Manual | Manual | Automatic | Automatic | Automatic |
|
Rapid Mode
| ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
|
Filters Configuration
| Pre-Filter+ Carbon + True HEPA | Pre-Filter+ Carbon + True HEPA | Pre-Filter+ Carbon + True HEPA | Pre-Filter+ Carbon + True HEPA | Pre-Filter+ Carbon + True HEPA | Pre-Filter+ Carbon + True HEPA | Pre-Filter+ Carbon + True HEPA |
|
Pollution Indicator
| ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
|
Filter Life Time Indicator
| ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
|
Manual Fan Speed
| Low, Medium, High | Low, Medium, High | Low, Medium, High | Low, Medium, High | Low, Medium, High | Low, Medium, High | Low, Medium, High |
|
Timer & Scheduler
| Timer 1, 4, 8 Hr | Timer 1, 2, 4, 8 Hr, Scheduler | Timer 1, 2, 4, 8 Hr, Scheduler | Timer 1, 4, 8 Hr | Timer 1, 4, 8 Hr | Timer 1, 4, 8 Hr | N/A |
|
Available Colors
| White/Graphite | White/Graphite | White | White | Beige | Beige | Mocha Beige |
Videos
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Videos for this product
2:47
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My 5 favorite things about this air purifier!
The Check Point Professor
Videos for this product
3:52
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The Conway Airmega 400 keeps your home's air fresh
Is It Worth It?
Videos for this product
2:27
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Is it worth it? Does it clean the air during wildfires? TEST
Ausra
Compare with similar items
This Item  Coway Airmega 400 True HEPA Air Purifier with Smart Technology, Covers 1,560 sq. ft, White |  |  |  |  |  | |
| Price | $430.09 | -25% $301.19 List: $399.00 | -24% $285.87 Typical: $375.19 | -13% $84.99 Typical: $97.19 | $330.26 | $469.00 |
| Delivery | Get it as soon as Monday, Apr 29 | Get it as soon as Monday, Apr 29 | Get it as soon as Wednesday, May 1 | Get it as soon as Monday, Apr 29 | Get it as soon as Wednesday, May 1 | Get it as soon as Wednesday, May 1 |
| Customer Ratings | ||||||
| Sleep mode | ||||||
| Noise level | ||||||
| Easy to use | ||||||
| Easy to clean | ||||||
| Smart Features | ||||||
| Sold By | Amazon.com | Amazon.com | Amazon.com | Amazon.com | Amazon.com | Amazon.com |
| filter type | True HEPA, Active Carbon Filter, Pre-Filter | True HEPA, Active Carbon Filter, Pre-Filter | True HEPA, Active Carbon Filter, Pre-Filter | HEPA | True HEPA, Active Carbon Filter, Pre-Filter | True HEPA, Active Carbon Filter, Pre-Filter |
| floor area | 1560 square feet | 930 square feet | 930 square feet | 810 square feet | 1256 square feet | 1560 square feet |
| control method | touch | touch | touch | touch | touch | touch |
| power source | Corded Electric | AC | Corded Electric | Electric | Corded Electric | Corded Electric |
| particle retention size | 0.01 micrometer | 0.01 micron | 0.01 micron | 0.01 micron | 0.01 micrometer | 1560 square feet |
| noise level | 22 decibels | 22 decibels | 22 decibels | 20 decibels | 22 decibels | 22 decibels |
Reviews with images
Amazing Air Purifier! Software needs guidance (READ ME)
First off this filter is very large and the filters within it are huge in comparison to other competitors (Detailing Honeywell AirGenius 4 / 5 , Honeywell HEPA HPA300, and Molekule below). Check out the overall measurements of the unit before ordering it - 15" by 15" by 23" tall.First off, this purifier is BIG, and has TWO LARGE HEPA / Charcoal filters on each side. The HEPA will remove 99%+ of air contaminates and the Charcoal will scrub any smell. Do you have dogs or live in an area with bad air quality? Get this! The only downside is that the filters need to be replaced once a year and typically around $120 for the full set, you dispose the old ones. But when it comes to health . . . just do it. I had "Cleanable" filters in the past such as the Honeywell AirGenius 4 & 5 , let me say when you have to do it 4 times a year, I rather just pay $120 for the set. It typically takes 45 minutes each time to clean the AirGenius and about 4-5 hours to dry.The Coway Airmega 400s purifier also has a fine mesh pre-filter on each side of the unit (before the main HEPA / Charcoal). It is VERY fine, and is meant to capture hair and other items (heavy dust). These do not need to be replaced, instead they are cleaned manually, some say just clean them with water using a garden hose . I would be very careful using a hose since the fine mesh could tear. Instead I would recommend wiping them down by hand with a paper towel to remove the fine debris then fill up a bath tub and swirl them around a few times, then let them pat them dry with a towel and let them air dry.I first had the Honeywell AirGenius 4's and 5's for a few years but decided to move away from them because of health concerns related to the ozone producing electrostatic filter. I've heard of respiratory problems and other issues arising from the ozone they produce, even the EPA recently released some documentation on electrostatic filters, so I decided to move to a Honeywell HEPA equivalent.Next I moved to the Honeywell True Clean HEPA HPA300 ($250 each), this unit is also very big with 3 HEPA filters (much smaller filters than the Conway but it has 3 of them instead of 2, and a large replaceable charcoal filter in front of the HEPAs. Although a great unit, I wanted more coverage instead of buying more of these. Consumer reports rates this their top 3 filters on the market, if you have a smaller apartment / condo and want to save some money, this one is great and the replacement filters are half the price (but a little less than 60% of the coverage at around 465 square feet - i'll explain soon why the Coway Airmega 400s should only only be rated at 780 square feet).Lastly I moved the Molekule setup ($800 each) , although a very attractive unit the pre-filter is TINY and got clogged all the time. The pre-filters on this thing vs. the Molekule are maybe 6 times the surface area and there is TWO pre-filters in here, so around 12 times the pre-filter surface area. The HEPA filter in the Molekule feels like a toy compared to the giant ones in this unit. The only advantage the Molekule has is that it contains a light killing coating on the filter activated by a UV light within the unit. If Coway added a UV filter post stage they will own this market.In regards to color unit in all the pictures i've seen show it black, this is not true, its a very attractive gray on all side, and black on the top and feet.The power of this unit is amazing, if you turn it up all the way IT IS LOUD, but at the lowest setting I don't really notice the unit, other items in my room make more noise. There is a big leap in power output and sound from level 1 to level 2. Technically there is 5 settings, sleep, level 1, level 2, level 3, and smart which will just move the settings around using the smart sensor within the unit.Does it clean the air? That should be the most important question! The air smelled smelled noticeably cleaner after using this unit for a day and coming home. If I cooked something right away my house didn't smell of the food, those charcoal filters work great!How may do you need? The 1560 square feet is not accurate, that is for 2 full air scrubs per hour. Technically the rating is suppose to be 4 full square footage air scrubs an hour per the CADR (Clean Air Delivery Rate standard). Then you need to think about if you sleep with your bedroom closed at night you won't get filtered air in there, or if you put the filter in your room the rest of the house will not get airflow. So really this should be rated for 765 square feet at 4 full air scrubs per hour, which is still better than anything on the market! Even the big HoneyWell unit is rated for 465 square feet, and the Molekule is rated for ~400 square feet when you normalize it. I'm going to put some recommendations below, but if you can only afford one unit, don't worry, even 2 full air scrubs an hour is AMAZING, better then most things out there. If you keep it running 24 hours a day your house will be VERY clean.My 2 cents in an IDEAL situation (if you have the extra money to spend): In single floor house I would get one for the master bedroom and one for a common area (living room, kitchen, dining room) as far away from the bedroom as possible. This will ensure while you are sleeping you get clean air and so does the rest of the house. If you have a two floor BIG house I would recommend getting 3 units with the 3rd unit being upstairs in a common area or in a kiddo rooms. 3 units should be good for 2300 - 4680 square feet if you take the full 4 full air scrubs into consideration or Conways 2 full air scrubs an hour.The only downside is the app setup, once working it is great on Apple. On Android it is a mess, I think they ported it over from Apple to Android and didn't finalize their QA.I was NOT successful adding this unit to my 5Ghz network. It doesn't let you select your wifi from a list, instead it grabs the last wifi you were connected to. So first thing, connect your iphone to your 2.4Ghz network. Then start the setup.One important thing I documented in my pictures is where the buttons are. They aren't the big round things on the left side needed to start the wifi paring, those are just indicators. You touch the screen printed area that i'm pointing at in the pictures in order to start the wifi pairing (Follow the app instructions).The unit is turned on by the big power button, but the level is controlled by the touch arc between the power button and the screen printed area of power level.You will probably get a API request timeout in the app the first time you set it up, just force kill the app (on your iphone X swipe up to pull up the app carousel, then swipe up again to force kill the app, on iphone 4 to 8 double touch your home bar to bring up the app carousel, then swipe up again to force kill the app). On the second reload everything will work great.Other then those small hangups on setup and getting the app working for the first time, it has been great. I think the app is pretty well laid out and informative.The app will tell you when to change your filters, what your air quality looks like over the last few hours / days / week, give you the ability to turn on and off the unit by a schedule, adjust the fan levels, order new filters, etc.If you don't use the app there is a lit up circle on the front of the unit that will tell you your current air quality and notify you if you need to clean or change your filters (clean pre filters or change once a year your HEPA / Charcoals).Coway if you want to own this market and steal the market share away from dyson, honeywell, and everyone else on the market, revise your app with better QA and a better UX, it is a little rough. Add a post UV filter. Add another step between fan level 1 and fan level 2. Get this in costco, best buy, or consumer reports.I highly recommend this unit. The prices now are currently amazing so there is no reason you shouldn't get this!
Top reviews from the United States
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Reviewed in the United States on November 18, 2018
After researching for hours and hours and asking my friends for advice, I went ahead and purchased this air purifier. I have been using it for a few days now. It shipped 1-day from Amazon and I immediately put it to use. After an evening of use, my scratchy throat was better the next day. And the indoor air felt clean and refreshed. As if the window was opened. Here were my main considerations:
• Size of Room
• Effectiveness of Machine
• Size and Look of Machine
• Cost of Machine
• Set up / Ease of Use
• (Noise Level)
SIZE OF ROOM: The first thing you need to identify is the actual size of the room you are trying to clear. My living room, dining room and kitchen are all in one open space so the cooking smells and airflow are an issue. Many of the air purifiers recommended only clear 300’ of space. My room is at least 700’ large. Ceiling height should also be a consideration. And ideally get one that handles a room much larger (within reason) so your purifier does not have to run on high the entire time.
EFFECTIVENESS: I believe a dual filter system is the minimum for pure air cleaning. We already had the Dyson fan with HEPA filter. This is one level. Adding in an activated carbon filter for smells is another. One machine that was pricey (Molekule $799) has a third level of UV light to kill bacteria which is critical if you have mold. Maybe even if you have dogs. The UV light was overkill for my current needs and also more expensive so I opted for “no” this time around. Molecule also has 3, 6 or 9 month financing which was intriguing but they were out of same day delivery so I opted to go through Amazon. There are different filter consideration is based on air cleaning (HEPA), smell cleaning (CARBON), and bacteria/mold cleaning (UV / Ozone’s). There is an added consideration for pet dander.
SIZE and LOOK: I almost bought the taller thinner machine that had customized fronts you could add — but it was too expensive to ship next day. So I did more research and decided on this model. It is LARGE. Like a small side table that unfortunately does not double as a side table because you need to keep the top clear. I personally like the way it looks and it was so easy to set up, plug in, and immediately went to work — it was a wonderful experience. It is clean looking, quality materials and the added lights and sounds really make it high end.
COST: It was not cheap, but in the end was mid-level pricing compared to the other machines that cleared the same area. Over 1200 feet so I am covered.
SET UP / EASE OF USE: I took this unit out of the box, took off the plastic wrap, and took the filters out of plastic bags one set on each side of the machine. Then I plugged it in and started working immediately. I loved the sound feedback when you push the buttons going up and down with the airspeed and also easy to set on auto. I also appreciate the fact that air is filtering from both sides of the unit. For this reason, when in use, It does need at least one and a half to 2 feet of open space on each side of the unit, so it does need to be pulled out when in heavy use.
NOISE LEVEL: I did not really care about the noise level but it is quiet and on AUTO now and it feels cool and peaceful in the room.
BONUS: The last reason I bought it is because it has an auto sensor that automatically kicks up the fan speed when there are more air particulates in the air. This is traditionally during cooking but in my case it was handy when doors would open and closed during this fire season. When I first plugged it in it was purple and took about 10 or 15 minutes to turn blue. This is after one week of no open doors or windows or airflow inside during the fires. I let my neighbor borrow it and it took about half an hour to clear his space which was read and then bright pink and purple and finally turned blue. I wondered if it just turned a different color when it was plugged in because when I brought it back into my unit it turned purple for about 15 minutes before turning blue again. Then, I made some popcorn in during the cooking of the popcorn the unit turned purple again and clean out the air for about half an hour. I found out after meeting the materials you can change the sensitivity level of the particular sensor, but now I believe it is accurate and helpful. I love having the color feedback to confirm the air is clear.
I also bought a Levoit smaller fan for the bedroom at the same time and I have to say it does barely anything. And it feels cheap compared to the Conway. I am going to send it back. I am definitely keeping this Conway Airmega and highly recommend it to other people with the same considerations. I will continue to test the sensitivity level of the sensors and will post more updates if anything new arises.
Style: 300 WHITEPattern Name: Air PurifierVerified Purchase
Cleans Indoor Air in Hazardous Air Conditions - Beautiful High Quality Design
Reviewed in the United States on November 18, 2018
So like many others in the Bay Area, we have been hit with unprecedented air levels during the Camp Fire disaster, and levels of particles in the air reached 263 on Friday which is “Hazardous” and all local schools were closed a few days ago. I had my 79-year old mother and a cousin with a 2-year old toddler coming to stay for the holidays, as well as two girls ages 9 and 11. We ended up telling the family with the toddler to stay clear of the area. My mom did fly in and we have masks we are wearing if we go outside.Reviewed in the United States on November 18, 2018
After researching for hours and hours and asking my friends for advice, I went ahead and purchased this air purifier. I have been using it for a few days now. It shipped 1-day from Amazon and I immediately put it to use. After an evening of use, my scratchy throat was better the next day. And the indoor air felt clean and refreshed. As if the window was opened. Here were my main considerations:
• Size of Room
• Effectiveness of Machine
• Size and Look of Machine
• Cost of Machine
• Set up / Ease of Use
• (Noise Level)
SIZE OF ROOM: The first thing you need to identify is the actual size of the room you are trying to clear. My living room, dining room and kitchen are all in one open space so the cooking smells and airflow are an issue. Many of the air purifiers recommended only clear 300’ of space. My room is at least 700’ large. Ceiling height should also be a consideration. And ideally get one that handles a room much larger (within reason) so your purifier does not have to run on high the entire time.
EFFECTIVENESS: I believe a dual filter system is the minimum for pure air cleaning. We already had the Dyson fan with HEPA filter. This is one level. Adding in an activated carbon filter for smells is another. One machine that was pricey (Molekule $799) has a third level of UV light to kill bacteria which is critical if you have mold. Maybe even if you have dogs. The UV light was overkill for my current needs and also more expensive so I opted for “no” this time around. Molecule also has 3, 6 or 9 month financing which was intriguing but they were out of same day delivery so I opted to go through Amazon. There are different filter consideration is based on air cleaning (HEPA), smell cleaning (CARBON), and bacteria/mold cleaning (UV / Ozone’s). There is an added consideration for pet dander.
SIZE and LOOK: I almost bought the taller thinner machine that had customized fronts you could add — but it was too expensive to ship next day. So I did more research and decided on this model. It is LARGE. Like a small side table that unfortunately does not double as a side table because you need to keep the top clear. I personally like the way it looks and it was so easy to set up, plug in, and immediately went to work — it was a wonderful experience. It is clean looking, quality materials and the added lights and sounds really make it high end.
COST: It was not cheap, but in the end was mid-level pricing compared to the other machines that cleared the same area. Over 1200 feet so I am covered.
SET UP / EASE OF USE: I took this unit out of the box, took off the plastic wrap, and took the filters out of plastic bags one set on each side of the machine. Then I plugged it in and started working immediately. I loved the sound feedback when you push the buttons going up and down with the airspeed and also easy to set on auto. I also appreciate the fact that air is filtering from both sides of the unit. For this reason, when in use, It does need at least one and a half to 2 feet of open space on each side of the unit, so it does need to be pulled out when in heavy use.
NOISE LEVEL: I did not really care about the noise level but it is quiet and on AUTO now and it feels cool and peaceful in the room.
BONUS: The last reason I bought it is because it has an auto sensor that automatically kicks up the fan speed when there are more air particulates in the air. This is traditionally during cooking but in my case it was handy when doors would open and closed during this fire season. When I first plugged it in it was purple and took about 10 or 15 minutes to turn blue. This is after one week of no open doors or windows or airflow inside during the fires. I let my neighbor borrow it and it took about half an hour to clear his space which was read and then bright pink and purple and finally turned blue. I wondered if it just turned a different color when it was plugged in because when I brought it back into my unit it turned purple for about 15 minutes before turning blue again. Then, I made some popcorn in during the cooking of the popcorn the unit turned purple again and clean out the air for about half an hour. I found out after meeting the materials you can change the sensitivity level of the particular sensor, but now I believe it is accurate and helpful. I love having the color feedback to confirm the air is clear.
I also bought a Levoit smaller fan for the bedroom at the same time and I have to say it does barely anything. And it feels cheap compared to the Conway. I am going to send it back. I am definitely keeping this Conway Airmega and highly recommend it to other people with the same considerations. I will continue to test the sensitivity level of the sensors and will post more updates if anything new arises.
Images in this review
Reviewed in the United States on January 2, 2023
Update: 5/16/2023: Both purifiers I bought continue to perform well. They are quiet and effective. I’m still using the original filters and still have a lot of life left in them, despite leaving them on the smart setting with a medium fan setting 24/7. Excellent purchase for someone dealing with asthma and/or allergies, pets and wanting a well-built air purifier for cleaner air and better breathing.
Original review: I have asthma and allergies and have two dogs, and I wanted two well-designed, effective, stylish, large-capacity air purifiers for our great room and the master bedroom. These are very well constructed, easy to use, and effective. They have a set and forget feature that I really like. The pre-filters are easily cleaned with the vacuum brush attachment on your vacuum cleaner and the purifiers provide a cleaning indicator so you always know the status of the pre-filters. The main filters are very well made and are no doubt very effective and long lasting (I have not yet had to replace them and believe they’ll go a year before that is required.) I highly recommend these air purifiers to anyone wanting cleaner air, fewer dust bunnies, and less pet dander in the home. I set them, so they run when needed and shut off when the air is clean. I turn off the light before sleeping and they continue to perform as needed 24 hours a day. I’m very pleased with these and believe they contribute to better health.
Style: 400 GRAPHITEPattern Name: Air PurifierVerified Purchase
Excellent, Stylish and Quiet Air Purifiers
Reviewed in the United States on January 2, 2023
Update: It’s been over a year and I’ve replaced the filters once. The prefilters require regular cleaning, but the purifiers provide a status light to ensure you know when it is required. These continue to perform extremely well and I remain very happy with their effectiveness at removing dust and allergens from the air.Reviewed in the United States on January 2, 2023
Update: 5/16/2023: Both purifiers I bought continue to perform well. They are quiet and effective. I’m still using the original filters and still have a lot of life left in them, despite leaving them on the smart setting with a medium fan setting 24/7. Excellent purchase for someone dealing with asthma and/or allergies, pets and wanting a well-built air purifier for cleaner air and better breathing.
Original review: I have asthma and allergies and have two dogs, and I wanted two well-designed, effective, stylish, large-capacity air purifiers for our great room and the master bedroom. These are very well constructed, easy to use, and effective. They have a set and forget feature that I really like. The pre-filters are easily cleaned with the vacuum brush attachment on your vacuum cleaner and the purifiers provide a cleaning indicator so you always know the status of the pre-filters. The main filters are very well made and are no doubt very effective and long lasting (I have not yet had to replace them and believe they’ll go a year before that is required.) I highly recommend these air purifiers to anyone wanting cleaner air, fewer dust bunnies, and less pet dander in the home. I set them, so they run when needed and shut off when the air is clean. I turn off the light before sleeping and they continue to perform as needed 24 hours a day. I’m very pleased with these and believe they contribute to better health.
Images in this review
Reviewed in the United States on February 10, 2019
Now on to effectiveness. We have a nearly 3000 square foot new construction home. It’s about three years old. Most of our air contaminants likely come from area construction, as well as a year round growing season, with year round pollen and similar contaminants. My oldest child has had a persistent hack for the last couple of years. I would not really call it a cough, so much as a hack. Every few minutes he would do a throat and lunch clearing cough. It never seemed short of breath, just seemed to be clearing an irritant. We took him to doctors, who suggested everything from allergies to asthma. We sort of ruled out asthma because he is athletic, and has no issues out working other children, and displays no unacceptable shortness of breath, other than what you expect, and recovery times are quicker than normal. As a previous asthma sufferers myself, that does not resemble asthma to me. We opted to try daily allergy medications, and they seemed to help some, but did not eliminate that dreaded hack. Now I said all of that to say this. Since we added this filter, we hardly ever hear him clear his lungs. I’m actually surprised, because I assumed it would take much longer. I figured he had been doing it long enough that it was a habit by now. But after a few days of filtering, his symptoms diminished, and after a week or so, he almost never does it.
Now our home is nearly double the size of the the filters rated coverage area. But the design of our home, I think, allows one unit to work. Our central air unit has only one air return, and it is at the blower unit. This is located centrally, upstairs, in a closet with a vented door. The area around that closet is sort of an open landing area, that opens to a large family room. I think what is happening is that the filter can clean large volumes of air, that then get circulated through the house. The dirty air is then pushed back up to that open area, and filtered by the unit. The unit can tell when air is clean or dirty, and increases, or decreases circulation, accordingly. Anecdotally this seems to be a successful test, eliminating our primary concern. The side benefit is the remainder of our family is now breathing cleaner, healthier air. It just took one sensitive member to illustrate the need. I wish I had known this would solve the problem, and I wish I had done it sooner. I expected to need to units to have a successful result, and I’m so pleased that one unit does the job. Not every home may have the same results. Some may actually need two units to do the job.
Also, I opted to shop the amazon warehouse deals and save a bunch of money. I bought a used acceptable condition unit. It arrived in a generic box, but everything was still protected by the factory foam, and cling wrap. Everything appeared new, and worked perfectly. If you want to save s big percentage, I highly suggest checking out the warehouse deals. If your displeased with the condition, Amazon has a very generous return exchange policy. My filters in my unit looked brand new and unused. But if I were concerned, new filters are about $100, so you could still have significant savings, even if you opted to put brand new filters in it right away. At first I was put off by what seemed like a high filter cost. Then I recognized what I was spending on allergy medication each month, for one child. The filters provide clean, allergy free air for the whole family, at a fraction of the cost of allergy medications for one child. By reducing our allergy medication costs, we can replace filters as needed, an no added cost.
I would have thought building a new home would prevent these issues, but the other new construction in the area, seems to exacerbate the issue.
I also weighed the option of an Aprilair, or air bear system on our central air unit, but I was concerned about the designed air flow for our system, and any disruption could shorten the central air life, increase energy needs, and decrease overall home comfort. Those air filters work great for a system designed and tuned for their use. But for a system designed for a more or less open fiber filter, it could cause problems. So I decided a stand alone filter would be the better option. Also those air handler systems that go on your ariconditioner unit, are not usually helps rated. The AIRMEGA 400s is. And it is constantly monitoring, and cleaning the air. It also uses no harmful ozone. I’m an ozone fan, and I own an ozone generator. But I like to use it in specific situations, under controlled conditions, when all occupants can be out of the house. I don’t want ozone to be a part of my primary home air filtration system. Others may have different priorities, and I encourage you to research the benifits and precautions, and choose according to your needs and priorities.
Style: 400S WHITEPattern Name: Air PurifierVerified Purchase
Cleaner healthier air, while saving money, don’t be affraid to try the Amazon warehouse deal!!
Reviewed in the United States on February 10, 2019
I love a lot about this air filter. I really like the smart features. I originally thought they would be gimmicky, but after living with it for a few weeks I have experienced the value. I love that it detects the airborne contaminants, and increases air circulation to clean the air. I’ve noticed that it increases air flow during high traffic and vacuuming, among other things. I like that I can check the app for air quality, and I can see past air quality as well. I like that the filter knows when it’s bedtime and decreases airflow, in order to keep noise pollution down, for quiet tearfulness.Reviewed in the United States on February 10, 2019
Now on to effectiveness. We have a nearly 3000 square foot new construction home. It’s about three years old. Most of our air contaminants likely come from area construction, as well as a year round growing season, with year round pollen and similar contaminants. My oldest child has had a persistent hack for the last couple of years. I would not really call it a cough, so much as a hack. Every few minutes he would do a throat and lunch clearing cough. It never seemed short of breath, just seemed to be clearing an irritant. We took him to doctors, who suggested everything from allergies to asthma. We sort of ruled out asthma because he is athletic, and has no issues out working other children, and displays no unacceptable shortness of breath, other than what you expect, and recovery times are quicker than normal. As a previous asthma sufferers myself, that does not resemble asthma to me. We opted to try daily allergy medications, and they seemed to help some, but did not eliminate that dreaded hack. Now I said all of that to say this. Since we added this filter, we hardly ever hear him clear his lungs. I’m actually surprised, because I assumed it would take much longer. I figured he had been doing it long enough that it was a habit by now. But after a few days of filtering, his symptoms diminished, and after a week or so, he almost never does it.
Now our home is nearly double the size of the the filters rated coverage area. But the design of our home, I think, allows one unit to work. Our central air unit has only one air return, and it is at the blower unit. This is located centrally, upstairs, in a closet with a vented door. The area around that closet is sort of an open landing area, that opens to a large family room. I think what is happening is that the filter can clean large volumes of air, that then get circulated through the house. The dirty air is then pushed back up to that open area, and filtered by the unit. The unit can tell when air is clean or dirty, and increases, or decreases circulation, accordingly. Anecdotally this seems to be a successful test, eliminating our primary concern. The side benefit is the remainder of our family is now breathing cleaner, healthier air. It just took one sensitive member to illustrate the need. I wish I had known this would solve the problem, and I wish I had done it sooner. I expected to need to units to have a successful result, and I’m so pleased that one unit does the job. Not every home may have the same results. Some may actually need two units to do the job.
Also, I opted to shop the amazon warehouse deals and save a bunch of money. I bought a used acceptable condition unit. It arrived in a generic box, but everything was still protected by the factory foam, and cling wrap. Everything appeared new, and worked perfectly. If you want to save s big percentage, I highly suggest checking out the warehouse deals. If your displeased with the condition, Amazon has a very generous return exchange policy. My filters in my unit looked brand new and unused. But if I were concerned, new filters are about $100, so you could still have significant savings, even if you opted to put brand new filters in it right away. At first I was put off by what seemed like a high filter cost. Then I recognized what I was spending on allergy medication each month, for one child. The filters provide clean, allergy free air for the whole family, at a fraction of the cost of allergy medications for one child. By reducing our allergy medication costs, we can replace filters as needed, an no added cost.
I would have thought building a new home would prevent these issues, but the other new construction in the area, seems to exacerbate the issue.
I also weighed the option of an Aprilair, or air bear system on our central air unit, but I was concerned about the designed air flow for our system, and any disruption could shorten the central air life, increase energy needs, and decrease overall home comfort. Those air filters work great for a system designed and tuned for their use. But for a system designed for a more or less open fiber filter, it could cause problems. So I decided a stand alone filter would be the better option. Also those air handler systems that go on your ariconditioner unit, are not usually helps rated. The AIRMEGA 400s is. And it is constantly monitoring, and cleaning the air. It also uses no harmful ozone. I’m an ozone fan, and I own an ozone generator. But I like to use it in specific situations, under controlled conditions, when all occupants can be out of the house. I don’t want ozone to be a part of my primary home air filtration system. Others may have different priorities, and I encourage you to research the benifits and precautions, and choose according to your needs and priorities.
Images in this review
Top reviews from other countries
Larry
Excellent air filter
Reviewed in Canada on February 16, 2024Style: 400 GRAPHITEPattern Name: Air PurifierVerified Purchase
B. Lefebvre
Quiet air purifier
Reviewed in Canada on December 9, 2023Style: 300 WHITEPattern Name: Air PurifierVerified Purchase
Juan
Elimina olores y funciona solo.
Reviewed in Mexico on April 25, 2023Style: 400 GRAPHITEPattern Name: Air PurifierVerified Purchase
Don Gauthier
Quality meets Quiet
Reviewed in Canada on January 6, 2022Style: 400S GRAPHITEPattern Name: Polka DotVerified Purchase
Don Gauthier
Reviewed in Canada on January 6, 2022
This purifier moves a lot of air on its Max setting, and you can feel the air movement from several feet away. It blows upward, so not a breeze like from a fan, but a gentle air movement circles the room. It’s also very quiet. In low you cannot hear anything, even standing beside the purifier. Medium adds a little white noise to the room. High is noticeable, but not a nuisance.
Pros: “Smart” air purifier boasting a high CADR, attractive unit, solid build quality, decent price, and dual 12-month HEPA filters make this a smart investment. Dual handles make this easily manoeuvrable.
Cons: Filter availability.
The App: The app is decent, not great. It’s basically a remote control (on/off, fan speed) with a custom schedule builder if you don’t want the Auto mode enabled. Offers filter life indicators/notifications as well as indicators/notifications when to wash the pre-filter filters. Air Quality Index (AQI) is not available in North America.
If the 400S (“S” = Smart) is a few bucks more than the 400 (standard) then go for it… but consider how much more you are willing to spend for the ability to control fan speed and receive notifications on your phone.
Filters are not easy to find, perhaps due to the popularity of HEPA in the age of COVID, …but like face masks, hand sanitizer, and toilet paper… I’d expect that to normalize soon. All said, we’re happy. Would not hesitate to purchase again.
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HR
Muy buen purificador de aire
Reviewed in Mexico on March 4, 2021Style: 400S WHITEPattern Name: Air PurifierVerified Purchase
