Air felt noticeably cleaner
Three-stage filtration system
Lightweight and compact
No WiFi capability or app integration
Requires manual control
Gets loud on highest setting
We received the Coway Airmega 150 so our writer could put it to the test. Keep reading for our full product review.
The Environmental Protection Agency estimates that the air in your house is about five times more polluted than the air outside. Cooking, cleaning products, scented candles, and even your pets can contribute to dirty air that you really don’t want to breathe in. That’s where air purifiers come in.
The best air purifiers filter out all kinds of pollution, from volatile organic compounds (VOCs) that come from your dryer sheets to the dander and allergens that spread all over the place every time your dog scratches its ears. With a three-stage filtration process and real-time air monitoring, the Coway Airmega 150 promises to be one of the best compact air purifiers you can buy. Of course, I couldn’t take Coway’s word for it. I put it through some serious testing to see if it could live up to its promises.
Right out of the box, I was impressed. The air purifier was unexpectedly light, and the setup was straightforward. I removed some plastic wrap from around the machine and a couple of filters, a process that took about a minute. Other than that, the machine was ready to go.
I plugged it in and started playing around with the settings. There’s a control panel on top of the air purifier with three easy-touch buttons for power, settings, and an LED light that serves as an air quality indicator. You can also toggle through auto, 1, 2, and 3 fan settings.
The air felt fresh, clean, and noticeably cooler.
On the lowest fan setting, the air purifier was barely audible. I was surprised by how quiet it was. It provided just enough humming to make for the perfect amount of white noise as I fell asleep, but never too much sound that it felt obtrusive. The medium setting was a little louder but still pretty quiet. The high setting was definitely more powerful and loud enough to make it difficult to watch TV at a comfortable volume.
As far as purification goes—the most important part of an air purifier—the Coway Airmega 150 really performed. It circulates your air through a three-step filtration process that combines a pre-filter, a deodorizing filter, and a true HEPA filter, and the results were apparent. The air felt fresh, clean, and noticeably cooler. I set the air purifier up in a room with a cat litter box to really test things out, and I was wildly impressed with how well it neutralized the musty smell and dust that often go hand in hand with having cats that do their business in a box.
I left the air purifier in auto mode most of the time, which made things really convenient. The air purifier can sense the room's quality in real-time, and it adjusts the fan speed according to what your air needs at any given time.
If I had to pick on the Coway Airmega 150 for something, it would be that it doesn’t come with a remote, so you have to control it manually. You’re supposed to leave an air purifier running all day, so there’s no need to mess with the controls frequently. But having a remote would be a nice additional touch, especially if it’s in your bedroom and you want to turn it on or off from the comfort of your bed.
The other con would be that there’s no WiFi or app integration. An air quality indicator light on the top of the air purifier shows one of four different colors (blue, green, yellow, and red) to indicate good to poor air quality. If the indicator light turns red, it would be good to know the substances in the room that are causing bad air quality.
The purifier has a nice option to turn off the air quality indicator light if you’re running the Coway in your bedroom while you sleep and you don’t want the bright LED illuminating the room.
Frequently Asked Questions
What square footage does the Coway Airmega Cover?
The Coway Airmega 150 is designed to purify up to 214 square feet of living space. It’s designed for mid-sized rooms or small apartments. If you have a bigger living area, you can always buy a few to scatter around the house, or you can opt for one of Coway’s larger models, like the Airmega 300, which can purify 1,256 square feet, or the Airmega 400, which covers a whopping 1,560 square feet.
How often do you have to replace the filter?
Coway recommends changing the deodorization filter every six months and the true HEPA filter every 12 months, but the time between filter changes can vary based on how poor your air is. There’s a filter replacement indicator light that will come on when you have to replace your filters, so you do not need to keep track of the timing yourself. In addition to changing the filters, you should manually clean the pre-filter every two to four weeks.
How easy is it to clean the filter?
Cleaning the filter—or, more accurately, the pre-filter—is an easy, straightforward process that only takes a couple of minutes. Pull the filter out, remove the dust and debris by using either a vacuum or running it under cool water, depending on how dirty it is. If you use water, you must let the filter dry completely before reinserting it into the air purifier. There’s a visible handle on the top of the machine where you slide the pre-filter in and out without needing to disassemble the air purifier.
Coway Airmega 150 vs. Levoit Smart HEPA Air Purifier
If you want to stay under $200, the Levoit Smart HEPA Air Purifier is a similar option, but with notable differences. They both have a three-filtration process and intuitive auto features. You can connect the Levoit to your smartphone, and it can purify up to 322 square feet. The Levoit air purifier covers about 50% more space. The trade-off is its size; it has a considerably larger footprint, 22 inches tall and nearly 18 inches wide and 11 inches deep. The two air purifiers are both priced about the same at $190, so if you’re willing to go bigger for more features, the Levoit is the better deal.
An excellent option for small spaces.
If you have a smaller living space or you really want to focus on one room, like your bedroom, the Coway Airmega 150 is an excellent air purifier for the job. It makes a noticeable difference in air quality and gets rid of musty or lingering smells. If you need to purify a larger space, opt for one of Coway’s bigger models or check out the competition for an air purifier that can handle it.
- Product Name Airmega 150 Air Purifier
- Product Brand Coway
- MPN 150
- Price $189.99
- Weight 12.1 lbs.
- Product Dimensions 13.4 x 18.5 x 6.5 in.
- Color White or green
- Room Coverage Area 214 square feet