In the battle between Coway Airmega 400 vs. 400S, which one fares well than the other? Which should you buy?
They may look very much alike, but they do have key differences that might just help you decide.
I’ve spent hours researching and testing both the Coway Airmega 400 and 400S to help you make an informed decision.
In this article, we’ll compare the two air purifiers and highlight their features, pros, and cons.
By the end of this article, you’ll have a better understanding of which air purifier is the right fit for you.
Are you ready? Let’s go!
VS.
Coway Airmega 400 vs. 400S: What’s the Difference?
Coway Airmega 400
If you’re looking for a powerful and efficient air purifier, the Coway Airmega 400 is definitely worth considering.
I’ve had this Coway Airmega 400 forever, and I’m still using it—I like its performance!
The HyperCaptive Filtration System is incredibly effective at removing pollutants and allergens from the air.
If you’re wondering what that is, it’s just a fancy name for combining a washable pre-filter, an activated carbon filter, and Green True HEPA Filter.
Unlike most purifiers that promise to capture particles as small as 0.3 microns, the Coway Airmega 400S can do that for as small as 0.1 microns.
Impressive, huh?
The Smart Mode feature is also really useful, as it allows the purifier to adjust to the air quality in the room automatically.
This means it always works at maximum efficiency without wasting energy.
In Eco mode, for example, if it detects that the air is already clean after 30 minutes, the fan will turn off to conserve energy.
But don’t worry because It will turn on again automatically once it detects pollution.
The Air Quality Indicator is another great feature, as it provides real-time monitoring of air quality.
This makes it easy to see the impact of the purifier’s filtration system and to identify any potential issues with air quality in your home.
However, there are a few downsides to the Coway Airmega 400.
Firstly, it’s quite large and heavy, which could make it difficult to move around if you need to use it in different rooms.
Secondly, replacement filters can be expensive, particularly if you need to replace them frequently.
Pros
- The HyperCaptive Filtration System effectively removes pollutants and allergens from the air.
- The Smart Mode feature allows the purifier to automatically adjust to the air quality in the room, ensuring maximum efficiency.
- The Air Quality Indicator provides real-time air quality monitoring, making it easy to see the impact of the purifier’s filtration system.
Cons
- The purifier is quite large and heavy, which could make it difficult to move around.
- The replacement filters can be expensive, particularly if you need to replace them frequently.
- The app can be a bit slow and unresponsive at times.
Coway Airmega 400S
I can’t say this enough—I loved the Airmega 400 performance.
But when I tried the 400S, it was an “Aha!” moment for me.
It has everything I love about the Airmega 400 and more!
It still has that highly-effective HyperCaptive Filtration System that removes particles in the air as small as 0.1 microns.
The Smart Mode feature, Eco Mode, and Air Quality Indicator are present too.
The outstanding feature of the 400S is it is Wi-Fi enabled.
It’s connected to the IoCare mobile app that allows the user to monitor indoor and outdoor air quality, schedule filter replacements, and adjust the fan speed and smart mode control.
You can also operate it via voice as it’s compatible with Amazon Alexa.
However, there are also a few downsides to this air purifier, pretty much the same as the 400 model.
The costly and frequent filter replacement and the bulky design are the cons of the 400S model too.
And on top of that, the app can be slow to respond at times, which can be frustrating.
Pros
- The HyperCaptive Filtration System removes 99.97% of particulate matter from the air, including pollen and other allergens.
- The IoCare mobile app includes indoor and outdoor air quality monitoring, filter notification, scheduling, speed, and smart mode control.
- The Smart Mode feature adapts to its surroundings by adjusting fan speeds based on the room’s air quality.
Cons
- The filter must be replaced every 6-12 months, which can be expensive.
- The unit is quite large, so it may not fit in smaller spaces.
- The app can be slow to respond at times.
Coway Airmega 400 vs. 400S: Quick Comparison
| Feature | Coway Airmega 400 | Coway Airmega 400S |
|---|---|---|
| WiFi-enabled | No | Yes |
| Smart home integration | No | Yes |
| CADR rating | 350 (smoke, dust, and pollen) | 350 (smoke, dust, and pollen) |
| Filtration system | True HEPA + Activated Carbon + Washable Pre-filter | True HEPA + Activated Carbon + Washable Pre-filter |
| Coverage area | Up to 1,560 sq. ft. | Up to 1,560 sq. ft. |
| Energy Consumption | 66 Watts | 64 Watts |
| Energy Star-Certified? | Yes | Yes |
| Noise Level | 22-53dB | 22-52dB |
| Price on Amazon (As of June 2023) | $507.24 | $533.29 |
Both models have the same CADR rating of 350 for smoke, dust, and pollen, which means that they’re equally effective at removing those from the air.
They also have the same filtration system, which includes a True HEPA filter, an activated carbon filter, and a washable filter
Both can remove 99.97% of airborne particles as small as 0.1 microns.
One of the key advantages of the Coway Airmega 400S is that it’s WiFi-enabled and offers smart home integration.
This means that you can control the air purifier with your voice or through the Coway IoCare app.
The app allows you to monitor the air quality in your home, set schedules, and adjust the fan speed and mode.
If you’re looking for a more advanced air purifier that you can control with your voice or through an app, the Coway Airmega 400S is the way to go.
Coway Airmega 400 vs. 400S Other Key Features
Filter Replacement and Maintenance
When comparing the Coway Airmega 400 and 400S, one of the most important factors to consider is filter replacement and maintenance.
Both models come with two filters – a pre-filter and a Max2 filter (a combination of Activated Carbon and Green True HEPA filter.)
The pre-filter is washable, while the Max2 filter is not.
It’s readily available online, though. On Amazon, for example, a Max2 filter retails for $93.83.
Both models have an indicator light that notifies you when it’s time to replace the Max2 filter, which typically needs to be replaced every 12 months.
Regardless of which unit you got, you’ll still pay for the same filter because both use the same one.
Energy Consumption
Another important factor to consider when comparing the Coway Airmega 400 and 400S is energy consumption.
Both models are Energy Star certified, meaning they meet strict energy efficiency guidelines set by the US Environmental Protection Agency.
However, the Airmega 400S is more energy efficient than the Airmega 400.
The Airmega 400S uses 64 watts at high speed, while the Airmega 400 uses 66 watts at high speed.
Noise Level
Finally, the noise level is another important factor to consider when choosing between the Coway Airmega 400 and 400S.
Both models have three fan speeds – low, medium, and high.
On low speed, both models are very quiet, with a noise level of 22 decibels.
At high speed, the Airmega 400S is slightly quieter than the Airmega 400, with a noise level of 52 decibels compared to 53 decibels for the Airmega 400.
FAQs about Coway Airmega 400 vs. 400S
What is the warranty period for the Coway Airmega 400 and 400S?
The warranty period for the Coway Airmega 400 and 400S is 5 years.
This covers defects in materials and workmanship under normal household use.
How long does it take for the Coway Airmega 400 and 400S to purify the air in a room?
The time it takes for the Coway Airmega 400 and 400S to purify the air in a room depends on several factors, including the size of the room, the level of pollution, and the fan speed.
Generally, both can take anywhere from 30 minutes to a few hours to purify the air in a room.
What are the color options for the Coway Airmega 400 and 400S?
The Coway Airmega 400 and 400S are available in white and graphite.
What is the weight of the Coway Airmega 400 and 400S?
The Coway Airmega 400 and 400S both weigh 24.7 pounds.
Coway Airmega 400 vs. 400S: Which Do I Recommend?
After reviewing both the Coway Airmega 400 and 400S, I would recommend the Coway Airmega 400S.
While both models have similar features, the 400S has the added benefit of Wi-Fi connectivity and home integration features.
This allows for easier control and monitoring of air quality from anywhere with an internet connection.
If you’re like me, who appreciates the added convenience of voice command or app control, I’d say that added couple of bucks is worth it.
Sure, the 400S is only slightly more expensive than the 400, but with the current discount available on Amazon (you only have to shell out $30 more) it is actually more cost-effective.
Overall, if you are looking for a high-quality air purifier with added convenience and efficiency, the Coway Airmega 400S is the way to go.
READ NEXT: How to Clean a Coway Air Purifier: The Ultimate Guide