Coway Airmega Mighty2 Review: The Sequel Is Better Than the Original

Coway's most popular air purifier has received a notable upgrade in both aesthetics and purification strength, according to a recent assessment by WIRED. The new Airmega Mighty2, launched at the end of March, is positioned as a successor to the brand's long-standing Best Affordable Air Purifier. While the original model has been a market favourite for years, the review concludes that the sequel offers superior performance metrics and a refined design, despite missing some connectivity features found in competing devices.

The unit features a larger, longer-lasting three-stage filtration system comprising a prefilter, a carbon filter, and a HEPA filter. A key improvement highlighted in the report is the durability of the internal components; the carbon and HEPA filters now last 12 months, doubling the six-month lifespan of the previous model. The prefilter has also been increased by 22 per cent in size and can be slid out from the right side for cleaning. This extended filter life is noted to mean the upgrade will pay for itself within a year of use through savings alone.

In terms of capacity, the Mighty2 can purify up to 1,800 square feet in one hour, a significant increase over the original's 361-square-foot limit. During testing in a 155-square-foot bedroom, the device achieved roughly 10 air changes per hour, significantly exceeding the standard recommendation of four to five changes. The Clean Air Delivery Rate (CADR) was measured at approximately 240 cubic feet per minute for smoke, 242 for dust, and 249 for pollen.

The device includes real-time air quality monitoring via a MegaScan laser sensor, which detects particles ranging from PM 1.0 to PM 10. The display utilises a colour-coding system to indicate air quality levels, shifting from blue for clean air to red for very unhealthy conditions. It also features smart mode, which automatically adjusts fan speeds based on detected pollutants, and a sleep mode that activates after three minutes of darkness.

Physical design changes include a shift from rounded corners to a square shape with pointed edges. The unit is available in matte white or cream, a change intended to reduce the attraction of hair and fur compared to the glossy finish of the original. However, the reviewer noted that the device weighs nearly three pounds more and lacks wheels, which limits mobility for users who need to move the unit frequently.

While the reviewer praised the quiet operation, noting it operates at around 35 decibels in sleep mode, they identified the absence of a connected mobile application as a drawback. Competing models were noted to offer remote control capabilities and historical logging of air quality, features the Mighty2 currently lacks. Despite these omissions, the assessment suggests the unit remains a solid choice for those seeking an affordable and powerful air cleaner without the need for an uber-expensive model.