Coway Airmega 300 is an aesthetic air purifier with adequate filters for every type of pollutants in your house!
The SECOND-MOST powerful unit in Coway’s air purifier lineup is available in a glossy white body. With a CADR of 285 cfm, the Coway Airmega 300 can cover mid to large-sized rooms (350 square feet in 10 minutes).
In this post, I will show you the core features of the Coway Airmega 300, including its pros and cons.
Key differences among the 300, 400, and the S models:
The Coway Airmega 400 series (White and Graphite) has MORE cleaning power than the Airmega 300 models (only in White) and comes in a larger form factor. Additionally, the 400 series has an ambient light sensor that regulates the sleep mode automatically.
The S Models (300S/400S) are app-enabled, which you can control and monitor over Wi-Fi.
Jump to…
- Specs
- In-depth Review
- Suitable Room Size
- Operating Costs
- Pros & Cons
- Coway Airmega 300 vs. 300S vs. 400 vs. 400S
Coway Airmega 300 Specifications:
| Parameter | Value |
|---|---|
| Models | Airmega 300, Airmega 300S (Wi-Fi) |
| Filtration Technology |
|
| HEPA Class | True HEPA |
| Filter Life | 12 months (Composite HEPA and Carbon) |
| Maximum CADR | 285 cfm for Smoke |
| Room Coverage (8 ft ceilings) | 425 sq ft with 5 air changes per hour (calculate ACH for your room) |
| Sensors | ✔️ (Particle sensor) |
| Fan Speeds | 3 |
| Automatic Mode | ✔️ |
| Noise Level | 22 - 52 dB |
| Rated Power | 57 Watt |
| Weight | 21.4 lbs |
| Dimensions | 21.2″H x 13.6″W x 13.6″D |
- [Coverage] Designed to clean spaces up to 1,256 sq. ft. in 30 minutes.
- [HyperCaptive Filtration System] Combination of a pre-filter, deodorization filter, and True HEPA Filter reduces 99.999% of 0.01-micron...
- [Smart Mode] With its Smart Mode feature, the Airmega automatically adapts to its surroundings by adjusting fan speeds based on the...
- [Eco Mdoe] When the air quality in the room remains purified for 30 minutes or more in Eco Mode, the fan will turn off to conserve...
- [Sleep Mode] When the Airmega's built-in pollution sensor detects that the air is clean for 3 minutes, Sleep Mode reduces the...
Last update on 2022-11-27 at 02:03 / Affiliate links / Images from Amazon Product Advertising API
In-depth Review of Coway Airmega 300:
Here are the core functions and features of the Airmega 300:
3-Stage Physical Filters:
For your peace of mind, the Coway Airmega 300 doesn’t have any electronic filters. It only uses physical filters: two permanent mesh pre-filters and two replaceable composite filters.
The pre-filter will stop the larger pollutants such as dust, pet hair, and fibers from carpets and rugs at the first stage. If you see these particles floating in your room all the time, this pre-filter will block them and protect the expensive filters.
Wash them regularly and regain the FRESHNESS of the air from your Airmega.
Next are the expensive filters.
Composite activated carbon and True HEPA filter.
This combined filter will trap tiny leftover pollutants such as fine dust, smoke particles, germs, and household odors. The True HEPA grade particle filter can capture 99.97% of 0.3 micron-sized particles (HEPA standard).
The odor filter is based on activated carbon pellets form. This type of carbon filter is the most effective to neutralize odors and household VOCs. However, it depends on the quantity of granular carbon used on the filter.
The composite filter has a dimension of 10 by 12 inches and is 1.5 inches deep. The numbers don’t look great; however, you are getting two of them, which means a total of 20 by 24 inches filter surface area. This looks great!
Coway Airmega 300 also features filter replacement/wash indicators. The Max2 filter lasts almost a year.
Enough Cleaning Power for Mid to Large-sized Rooms
Coway Airmega 300 has a higher level CADR rating (285 cfm), suitable for mid to large-sized rooms. For regular households allergen cleaning, it will filter the air from a 425 square feet room in 12 minutes (theoretically).
For general purpose cleaning, it will cover up to 1,000 square feet (two times per hour).
More room size recommendations are below.
Remember, the labeled CADR rating is tested by Coway and not certified by AHAM.
Air Quality Sensor with Indicator
Coway Airmega 300 comes with a built-in air quality sensor, which measures particulates (PM 2.5) in the air. The sensor helps to set the fan speed automatically by the device.
Also, the sensor indicates the air pollution level in your room with a beautiful color-gradient LED ring.
Simply select the auto mode and let the air purifier do its job.
Suitable Room Size for Coway Airmega 300:
If you have higher ceilings, then use our Air Changes per Hour Calculator to calculate the suitable room size.
Coway Airmega 300 Operating Costs:
Annual Filter Replacement: ~ $60 for the filter set (Max2 filter), 12 months usage (check availability & filter price on Amazon, Walmart, Sylvane).
Monthly Energy Consumption: ~ $2.4 (based on 12 cents per kWh and 12 hours use on the top fan speed per day). Use our Energy Usage Calculator to find out the bill based on your usage and the local energy rate.
Last update on 2022-11-27 at 02:03 / Affiliate links / Images from Amazon Product Advertising API
Video Commercial:
Pros & Cons:
Coway Airmega 300 vs. 300S vs. 400 vs. 400S:
Last update on 2022-11-27 at 02:03 / Affiliate links / Images from Amazon Product Advertising API
Questions and Answers
Q. Does the Coway Airmega 300 release any ozone?
A. No, the Coway Airmega 300 is 100% ozone-free. The air purifier has only physical filters. It doesn’t have electronic filtrations like an ionizer, UV, plasma, PCO, or ESP.
Q. When should I need to replace the filters?
A. The Max2 filters (HEPA and carbon composite) need to be replaced once every 12 months of usage. The filter replacement indicator will notify you when the filter needs to be replaced.
Q. Can I wash the filters?
A. Only the mesh pre-filters are washable. The composite filters are not washable, and you can only vacuum the black side of the filter using a soft brush vacuum head.
Final Thoughts
Coway Airmega 300 comes with a wide array of features for convenient use. The key points you can take into account are the aesthetics, high air delivery with two sets of composite filters, auto mode, and low maintenance cost.
Also, if you want to integrate it into your smart home ecosystem, you have the option to select the 300S model with some extra cost.
Is their a way to disable the Wi Fi on the S models so it wont send a signal and interfere with other devices? Still would like to use app to see info though every once and awhile.
The “S” model units have Wi-Fi icon on the left side of the unit, simply touch this icon and Wi-Fi communication will cease.
Thank you so much for the info and quick response. Im trying to make my home Wi Fi free as possible from radation.
Good luck with that. Are you going to your bunker for the 5G rollout?