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A family using the Airmega 100 with their dog.

All About the Airmega 100

For those looking for a budget-friendly air purifier optimized for small spaces, the new Coway Airmega 100 is an affordable air purifier option worth considering. With cold and flu season ramping up as people spend more time indoors, an effective and affordable air purifier can help create healthier home environments.

 The Airmega 100: The Best Affordable Air Purifier

As the best affordable air purifier, Airmega 100 delivers robust air cleaning for rooms up to 810 square feet, circulated air once per hour, despite its compact size and lower price tag. 

What Makes the Airmega 100 Unique?

The Airmega 100 distinguishes itself from other affordable air purifier models on the market for four key reasons: 

  • Operates quietly at 20dB in sleep mode
  • PM 2.5 sensor for real-time air quality monitoring
  • Three light settings: AQI indicators, night light, or all off
  • First cylindrical design by Coway with a 360-degree air intake

    A person using an Airmega100 on a couch.

    Below, we break down these benefits in more detail so you can determine whether the Airmega 100 is right for you and your space.

    Ideal for Small Spaces

    Engineered for rooms up to 810 square feet, the Airmega 100 provides purified air quickly and efficiently, circulating once per hour. Within just 30 minutes of operation, users experience notable improvements in indoor air quality. The compact size makes it easy to move from room to room as needed.

    Three-Stage Filtration

    At the core of the Airmega 100 is a powerful 3-stage filtration system with an inseparable 3-in-1 filter. The vacuumable pre-filter catches larger particles like dust, hair, pet hair and dander. Next, the True HEPA filter captures 99.999%1 of particles down to 0.01 microns for the overall performance of the 3-in-1 filter, including fine dust, allergens, mold, viruses, and other pollutants. Finally, the deodorization filter neutralizes odors from smoke, cooking fumes, and more.

    Note: Do not wash your filter only vacuum it. Washing will cause damage and hinder the filter’s performance.

    Cylindrical Air Intake Design

    The Airmega 100 was designed with 360-degree air intake, allowing it to filter the surrounding air in tight spaces effectively. Many air purifiers only take in air from one direction. With a multi-directional intake, this unit can thoroughly clean small bedrooms, offices, and other rooms more effectively and in less time.

    Real-time AQI / Auto Mode

    The Real-time air quality indicator shows the current air quality with a color display. The Real-time AQI shows air quality in 4 colors - Blue, Green, Orange, and Purple. There is Intuitive AQI Lighting from the translucent Grill. Blue indicates good air quality, Green indicates moderate air quality, Orange indicates bad air quality, and Purple indicates very bad air quality. The different colors provide an intuitive way to understand the current air quality at a glance.

    PM 2.5 Fine Particle Sensor

    The Airmega 100 can also detect tiny pollutant particles called PM2.5. These tiny particles can be quite dangerous for your health if inhaled, as they can penetrate deep into the lungs. The Airmega 100 contains a particle sensor that works by using an optical sensing method. 

    Inside the device, an infrared light emitting diode (IR LED) and a photo-sensor are positioned opposite each other. The IR LED shoots out a beam of infrared light. Any PM 2.5 particles in the air will reflect this light beam. The photo sensor then detects the amount of reflected light. More reflected light means there are more particles in the air. By using this simple but clever optical method, the particle sensor can monitor PM 2.5 concentrations. 

    Sleep Mode

    The Airmega 100 offers a sleep mode to reduce noise levels for restful nights, along with an optional soft night light to create a relaxing environment. The display also monitors air quality levels in real-time so users can see the performance.

    Night Light

    This affordable air purifier offers more than just clean air. It also features a soothing night light that provides a soft glow perfect for falling asleep. It's great for those who like to sleep with a touch of illumination or who need to get up in the middle of the night. Your purifier can quietly clean the air while the night light lets you drift off to sleep with ease.

    Efficient Circulation

    The Airmega 100 covers rooms up to 810 square feet, circulating purified air 1x per hour to effectively remove indoor air pollutants. The thoughtful design and advanced filtration allow the Airmega 100 to efficiently clean your indoor air.

    Energy Saving

    The Airmega 100 is cETL, Energy Star, ISTA-6 Amazon, and CARB certified, meaning it meets strict guidelines for safety, performance, and eco-friendly operation. With only 25W of power consumption, it cleans your air efficiently without excessive energy use. 

    The Airmega 100 is designed to effectively clean your indoor air while remaining environmentally responsible through its certifications and low power draw. You can feel good about running this air purifier to improve your indoor air quality without unnecessary energy waste.

    A woman holding her child near an air purifier.

    Improve Your Home Environment with the Coway Airmega 100

    Overall, the Airmega 100's affordable price point and specialized design make it the best budget-friendly option for small spaces needing powerful air purification. It combines advanced Coway technology found in premium models at a fraction of the cost, delivering cleaner indoor breathing air.

    Breathe easier and sleep better with Coway air purifiers. Our innovative Airmega 100 uses advanced multi-stage filtration to capture viruses, bacteria, allergens, and pollutants, cleaning your indoor air effectively. 

    Coway’s Airmega air purifiers promote healthier home environments. Find the perfect air purifier for your needs and experience the wellness benefits of our optimized purification solutions designed with your family's health in mind.

    Check out our New Year’s gift guide to see our full range of optimized air filtration systems for 2024. 


    1Coway air purifiers have been proven to trap dust, pollen, dander, viruses and bacteria in the air based on KCL (Korea Conformity Laboratories) testing.They have been tested in a 30㎥ size chamber according to the Korea Air Cleaning Association standard (SPS-KACA 002-132:2022 Modified) to measure the 0.01㎛ size of particle removal rate. It was tested on maximum airflow speed in normal room temperature and humidity conditions. The performance may vary in the actual living environment of customers.
    → Tested with Airmega Aim, 100, 150, 160, AP-1216L, AP-1512HH, AP-1512HHS, 200M, Icon, IconS, 230, 240, 250, 250 Art, 250S, 300, 300S, 400, 400S, ProX

    299.97% of viruses, bacteria, fungi and pollen were verified to be removed from the air for Coway air purifiers which have Green True HEPA™ filter applied based on the Japan Food Research Laboratories(JFRL) testing according to JEM 1467 standard.
    → Tested with Coway Airmega AP-1512HH, AP-1512HHS, 250, 250 Art, 250S, 300, 300S, 400, 400S
    → All tested by JFRL and received above result within below time.

    All tested by JFRL and received above result within below time.

    - Virus: Tested with Escherichia coli phage ΦX174 NBRC 103405, 60 minutes
    - Bacteria: Tested with Staphylococcus epidermidis NBRC 12993, 60 minutes
    - Fungi/Mold: Tested with Penicillium citrinum NBRC 6352, 60 minutes
    - Pollen: Tested with Cedar Pollen extract, 60 minutes

    3Aerosol test conducted in a Biosafety level 3 laboratory with two Coway air purifier models, Coway Airmega 250 and 400 for removal of SARS-CoV-2 Aerosol by US based MRI Global, a not-for-profit laboratory and partner of US Department of Defense. The test was conducted in a 13.1ft3 chamber. Virus was aerosolized for 15 minutes and the product was turned on high for 2 minutes. Result showed each product effectively removed over 99.98% of the SARS-CoV-2 in 2 minutes. This is a result from a laboratory experiment condition and result may vary in different conditions. This result does not imply it kills SARS-CoV-2 or prevents the transmission of Covid-19. Coway Airmega 250S and 400S are identical to the tested models and has equal performance with an additional mobile connectivity function.

    4The concentration of ammonia, acetaldehyde and acetic acid were proven to be removed within 30 minutes by FCG Research Institute, Inc. Human Life Science Lab. It is not a demonstration result in the actual use space. Not all odors and gases may be supported. → Tested with Coway Airmega 150, 160, AP-1512HH, AP-1512HHS, 400, 400S

    5The coverage area of the air purifier is based on an area where the air cleaner can make two air changes per hour (ACPH). An air change per hour translates to how many times an air purifier can clean an area, assuming the height of a ceiling to be 8 ft, in one hour. Therefore ** means two air changes per hour means that the cleaner can clean the area once every 30 minutes and * means air changes per hour means that the air purifier can clean the area once every 60 minutes.

    10Terms and conditions apply. Discounts, including promotions, coupons, bundle discount and subscription discount, cannot be stacked on top of other coupons. During promotional periods, discount codes will not be able to be applied to orders. Promo codes may apply to products only—filters, accessories, and new products within 3 months of the release date are not included.