Not too big, not too small. The Coway Airmega 250 air purifier is just right

By Patrick Hearn April 27, 2021

Better air quality benefits everyone, but not everyone has the space to install a large air purifier in their home. It’s particularly difficult for people who live in smaller studio apartments where floor space is at a premium. The Coway Airmega 250 is the solution — a miniature air purifier that works in spaces up to 930 square feet without requiring a lot of extra room.

The Coway Airmega 250 features multistage filtration that uses a prefilter, a carbon activated filter, and a certified Green True HEPA filter that removes up to 99.999 percent of harmful airborne particles like dust, pollen, and other allergens. It also removes particles as small as 0.01 microns in size — smaller than bacteria and many viruses.

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The prefilter is designed to catch larger particles in the air like hair and fur, but this filter can easily be detached and cleaned to extend the life of the other filters. Just slide the filter out, clean it, and hang it up until totally dry. When it is time to replace the other filters, an indicator light on top of the Airmega 250 will let you know — so there’s no guesswork required.

Image used with permission by copyright holder

The Coway Airmega 250 is packed with other benefits that make it beneficial for small spaces. At just 19.7 by 18.5 by 8.3 inches, it can fit most anywhere in the home. Just make sure the air intake isn’t blocked and you’re good to go.

Air quality indicators display the current status of your indoor air in real time in LED colors, while the Smart Modes will automatically adjust the air purifier to help keep your air quality at the level it should be. There’s even a Rapid Mode that activates and runs for a short time when your air quality is at dangerous levels to clear the air faster. It automatically shuts off when the air quality has returned to acceptable levels.

The Coway Airmega 250 stands out because of the amount of space it can cover despite its small size, which helps it compete with much larger models. It provides almost industrial levels of clean at a consumer price point. It is available for $400 from Coway’s website.

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Smart Home

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.

Smart Home

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.

Smart Home

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.