Skip to main content

The Airmega purifier will cleanse your house of poor air after you burned dinner

In October, I was watching TV with some friends when I got a “Poor air quality” alert on my phone. It had nothing to do with smog; it was coming from inside the house.

Luckily, the pizza I was making hadn’t burned, but some errant cheese was turning brown on the bottom of the oven. The resulting smoke — which I hadn’t noticed — had traveled from my kitchen, through the living room, to my bedroom. The Airmega 400S air purifier I was testing out had picked up that the air was less than fresh and sounded the alarm to the app on my phone.

If I had the Wi-Fi-enabled air purifier set to smart mode, it would have just kicked on and started purifying the air, no questions asked. Instead, because I had it set to turn on for regularly scheduled cleanings, the push notification suggested I turn on the device from the app. I did, and the air went from very unhealthy to moderate to good in the space of a half hour.

The rectangular box (22.8 by 14.8 by 14.8 inches) weighs nearly 25 pounds. It has a white plastic case hiding two pre-filters and a Max2 filter. The gray top has a concave circle with slats that the fan’s air blows through. It points straight up, so it won’t cool you down unless you are hovering over it. This is also where you will find the controls. On the right is the power button and a touch-activated slider that lets you move from smart mode to sleep mode, as well as select a fan speed. The left side has buttons for the light and Wi-Fi, as well as one for the pre-filter and Max2 filter. When the pre-filter light comes on, that means you will need to wash it. If the Max2 button lights up, it is time to replace that filter.

The two pre-filters are easily reached by pulling on the handles on either side of the Airmega. After a few weeks of use (I had my pre-filter wash frequency set to three weeks), I found some dust and cat hair waiting when I pulled out the pre-filter. The Max2 filter catches 99.97 percent of pollen, pollutants, and other allergens, according to the company. It needs to be replaced yearly. Once you have washed or replaced the filters, you hold down the respective button to reset the clock.

The $849 400S is $100 more expensive than the non-app controlled version. Both can clean areas up to 1,560 square feet. The smaller 300S and 300 can clean 1,256 square feet ($749 for the smart version, $649 for the non-app-controlled one). That is definitely a lot of coverage, more than many competitors. But it’s also a single-use device. Dyson adds a fan and heater into a smaller package for its $600 air purifier.

In the app, you will be able to set schedules, turn on the Airmega remotely, and get a graph of your indoor air quality for the day, week, month, and year.

Except for that blip with the pizza, my air quality was almost always 100 percent. Though I dutifully scheduled an air scrub every day for a couple hours, I can’t say I was allergy-free for the weeks when I used it. I also had some trouble getting the Airmega back online after having it unplugged for a couple days.

The Airmega is beautiful, smart, and pricey. While it’s nice to know my air is pretty clean, that price is a lot to pay for something that will sit idle — and take up a decent chunk of space — for most of the day.

Editors' Recommendations

Jenny McGrath
Former Digital Trends Contributor
Jenny McGrath is a senior writer at Digital Trends covering the intersection of tech and the arts and the environment. Before…
Can you run an air purifier and essential oil diffuser at the same time?
URPOWER Essential Oil Diffuser.

At first glance, air purifiers and essential oil diffusers seem like they would be natural opponents. One is designed to take particles from the air in your home, and the other is designed to add (pleasant-smelling) particles instead. If you’re running them both in the same room, it’s understandable to wonder if they’re canceling each other out.

Fortunately, it’s easy to clear this confusion up. Let’s take a look at some FAQs about these two home air devices and what you should know about using them both at the same time.
What's the difference between an air purifier and an air diffuser?
An air purifier uses a filter or series of filters to remove unwanted particles from your home’s air. They are commonly used to get rid of airborne allergens, smoke, and dust, and they can also help remove bacteria and viruses from the air. The best air purifiers use true HEPA filters that can remove particles down to the size of 0.3 microns, and some newer models can remove particles as small as 0.1 microns.

Read more
How long do I run my air purifier?
The Coway Airmega purifier.

In previous guides, we’ve discussed how today’s smart air purifiers work and what specs to look at when getting the right size for your room or house -- like CADR, or Clean Air Delivery Rate. But air purifiers can only cycle through a room’s air when they are turned on … which leads us to another important question: Just how long should you run your air purifier? Can you run it for too long? Don’t worry, we have all the answers.
How long should I run my air purifier?
The air quality inside your home is always changing, and the impact of your air purifier will depend on its size -- especially whether you want to clear up a single room or the whole house. In general, you can run an air purifier for a few hours a day and expect it to give the air in its space a thorough cleaning. If you’re only looking at one smaller room, half an hour to an hour can have the same result. That schedule can give you all the benefits that an air purifier offers without requiring it to be on all the time -- but you’ll want to run it at least once a day for best effect.

Do air purifier settings make a difference when running it?
They do. Most air purifiers have several fan settings that affect how quickly they push air through, in exchange for using more power and making more noise. If you only have a few hours a day to clean the air in your home and would prefer not to leave the purifier on when you are away, turn it to its maximum setting and let it run. Just note that max settings on most air purifiers will be too loud to hold a meeting in the same room.
Is it safe to run an air purifier all the time?
Yes. Air purifiers are generally designed to be run all the time if you prefer to. You can put the purifier on its lowest setting to diminish noise and let it run throughout the day.

Read more
The new Wyze Air Purifier offers quiet, efficient filtration
The Wyze Air Purifier is quiet enough for use in any room.

Wyze has announced a new air purifier with three different filter options. You can choose which filter you want at purchase, but the other filters can be purchased at a later date and swapped out on the fly as needed.

The Wyze Air Purifier filter options include the Allergen (Standard) filter, the Formaldehyde (Premium) filter, and the Wildfire filter. It utilizes a true HEPA filter for 99.97% efficiency in eliminating harmful, airborne particles such as dander, pollen, and even smoke. The purifier has enough power to clean a 500-square-foot room up to three times an hour, and it's not too loud even on the highest setting. The sound ranges from 21 decibels in its sleep mode to 54 decibels on its highest level -- roughly the same volume as a refrigerator's hum.

Read more