ReviewFinder Air Purifiers

Coway Airmega 400

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21 Verified Hands-On Reviews

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Expert reviews [21]

88
Total expert reviews: 21
  • with a score: 7
  • without a score: 14
Highest score by Cleanup Expert
99
Average score based on 21 reviews
88
Lowest score by At Home Divas
70

Score distribution:

80-100
60-80
40-60
20-40
0-20
ReviewFinder: authentic product reviews summarized by a powerful AI engine.

Expert consensus

The Coway Airmega 400 is a highly effective air purifier with powerful filtration, large coverage area, quiet operation, air quality monitoring, and energy-saving features, making it a versatile and reliable choice for improving indoor air quality.

The Coway Airmega 400 is a highly effective air purifier that offers powerful filtration for improving indoor air quality. It features a True HEPA filter that can capture 99. 97% of airborne particles, making it suitable for individuals with allergies, asthma, or pets.

It also includes an activated carbon filter to remove odors and reduce VOCs and fumes. The Airmega 400 is particularly beneficial for those living in areas with high air pollution or wanting to improve overall air quality in their homes.

The Airmega 400 is specifically designed for large rooms, with a coverage area of up to 1,560 square feet. It offers adjustable fan speeds and settings, including a Smart mode that automatically adjusts based on air quality. Despite its powerful fan, the Airmega 400 operates quietly, making it suitable for use in bedrooms.

Its noise level has been compared to that of the Ultra-quiet Rabbit Air MinusA2, despite having higher fan power.

The Airmega 400 features a built-in air quality sensor that provides real-time updates on air cleanliness through a LED ring. It also comes with a smartphone app that allows users to control the air purifier remotely, monitor air quality, and set schedules. This makes it convenient for users who want to easily monitor and improve air quality in their homes.

In terms of energy efficiency, the Airmega 400 is considered to be energy-saving. It has an energy-saving mode that shuts down the fan when air quality remains good for a certain period of time, reducing power consumption and saving on electricity bills. With a power consumption of 64 watts, it is relatively low for its large coverage area.

Overall, the Coway Airmega 400 is highly recommended for individuals with allergies, asthma, or pets, as well as those living in areas with high air pollution. Its powerful filtration, large coverage area, quiet operation, air quality monitoring, and energy efficiency make it a versatile and reliable choice for improving indoor air quality.

Filtration

The Coway Airmega 400 is a highly effective air purifier that uses a combination of filtration systems to remove pollutants and allergens from the air, making it suitable for individuals with allergies, asthma, or pets, as well as those living in areas with high air pollution.

The Coway Airmega 400 is a highly effective air purifier that uses a combination of filtration systems to remove pollutants and allergens from the air. It features a True HEPA filter that can capture 99. 97% of airborne particles as small as 0. 3 microns, including dust, pollen, pet dander, and mold spores.

The Airmega 400 also includes an activated carbon filter to remove odors and reduce volatile organic compounds (VOCs) and fumes. It has a washable pre-filter to catch larger dust particles.

The Airmega 400 is particularly suitable for individuals with allergies or asthma, as it can effectively remove common allergens from the air. It is also beneficial for pet owners, as it can help eliminate pet dander and odors. Additionally, it is useful for individuals living in areas with high levels of air pollution or those who want to improve the overall air quality in their homes.

The filters in the Airmega 400 do require regular replacement. The washable pre-filter should be cleaned every two weeks, while the main Max2 filters typically last for around 12 months, depending on usage. The cost of replacing the Max2 filters is $129 for a set of two when purchased from the Coway website.

Knockoff brands of filters are available at a lower price, but caution is advised when considering them.

Overall, the Coway Airmega 400 is a powerful air purifier that offers effective filtration for improving indoor air quality. It is suitable for individuals with allergies, asthma, or pets, as well as those living in areas with high air pollution. Regular filter replacement is necessary, but the cost may vary depending on the specific filter and retailer.

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Room Size

The Coway Airmega 400 is a powerful and quiet air purifier designed for large rooms, offering effective air cleaning and adjustable fan speeds.

The Coway Airmega 400 is a powerful air purifier that is specifically designed for large rooms. It is capable of effectively cleaning spaces up to 1,560 square feet, making it suitable for larger-than-average rooms. The Airmega 400 features a HyperCaptive Filtration System that can reduce 99.

999% of 0. 01-micron particles in the air, including pollen, pollutants, and allergens. This makes it an ideal choice for those who suffer from allergies or respiratory issues.

The Airmega 400 also offers adjustable fan speeds and settings that can be optimized for different room sizes. It features five fan modes, including Smart, Sleep, Low, Medium, and High, allowing users to choose the speed that suits their needs. The fan speed automatically adjusts based on the room's air quality and lighting conditions, ensuring optimal air purification performance.

One standout feature of the Coway Airmega 400 is its quiet operation. Experts have praised its noise level, describing it as nearly silent, whisper level, or as quiet as rustling leaves. Even at the highest fan speed, the Airmega 400 only produces white noise, which can be suitable for a bedroom setting.

Some reviewers have compared its noise level to that of the Ultra-quiet Rabbit Air MinusA2, despite having higher fan power.

Overall, the Coway Airmega 400 is a highly recommended air purifier for large rooms. Its ability to effectively clean the air in spaces up to 1,560 square feet, adjustable fan speeds, and quiet operation make it a versatile and reliable choice for improving indoor air quality.

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Air Quality Sensors

The Coway Airmega 400 is an air purifier with a built-in air quality sensor and a smartphone app that allows users to monitor and control the device remotely.

The Coway Airmega 400 is an air purifier that features a built-in air quality sensor. According to expert reviews, this sensor uses a feedback method to communicate the indoor air quality in real-time. It utilizes a brightly colored LED ring on the front of the unit to provide visual updates on the cleanliness of the air every minute of the day.

This allows users to easily monitor and assess the air quality in their homes.

In addition to the built-in air quality sensor, the Coway Airmega 400 also comes with a smartphone app called IoCare Mobile App. This app allows users to control the air purifier through their mobile devices or tablets. It provides features such as monitoring indoor and outdoor air quality, temperature, humidity, and more.

Users can also receive real-time air quality notifications, monitor filter lifetime, and set schedules for the air purifier through the app.

Based on these expert reviews, the Coway Airmega 400 is a comprehensive air purifier that offers both real-time air quality monitoring through its built-in sensor and convenient control through its smartphone app. This makes it suitable for users who want to easily monitor and improve the air quality in their homes, as well as have the flexibility to control the air purifier remotely.

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Energy Efficiency

The Coway Airmega 400 is highly regarded for its energy efficiency and ability to clean the air in larger spaces.

Based on expert reviews, the Coway Airmega 400 is considered to be energy efficient. It features an energy-saving mode that conserves power by shutting down the fan when the air quality remains good for a certain period of time. This helps to reduce power consumption during periods of low pollution levels, ultimately saving on electricity bills.

The Airmega 400 has a power consumption of 64 watts, which is relatively low considering its large coverage area of 1560 square feet. This makes it an ideal choice for larger spaces such as living rooms, offices, or even small apartments. Overall, the Coway Airmega 400 is praised for its energy efficiency and ability to effectively clean the air in larger areas.

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Position in ranking

We maintain a monthly ranking that sums up expert recommendations for all air purifiers.

Rank Change Price Air Purifier
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Tom's Guide
1
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Coway AP-1512HH
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5
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1
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1
4
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1
3
2
- $183
Winix 5500-2
The Winix 5500-2 air purifier is highly praised for its effective four-stage filtration system, quiet operation, built-in air quality sensor, and energy efficiency, making it a recommended choice for improving air quality in medium to large-sized rooms.
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1
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-
3
-
-
7
5
3
- $100
BlueAir Blue Pure 511
The BlueAir Blue Pure 511 air purifier is a highly effective and efficient option for improving air quality in medium-sized rooms, with HEPASilent dual filtration technology, quiet operation, and energy efficiency.
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4
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7
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1
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4
- $229
BlueAir 311i Max
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1
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4
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