Coway Airmega Mighty Series: Which Mid-Size Purifier to Buy

By Simone Ellery · Updated 2026-09-21T04:43:04.164Z · How we choose · How we make money

We may earn a commission if you buy through links on this page, at no extra cost to you. Our picks are based on the data shown, not on what pays us.

Airmega Halo

$229.99 tracking this price over 2 days · 2 readings

Pros

• 1898 sq ft coverage and 253.3 CADR are the highest in the Airmega Mighty series
• 17.8 dB is the quietest noise rating in the series
• At $229.99 it is the cheapest of the four, $10.00 less than the Airmega Mighty AP-1512HH
• 3-in-1 filter with a 1-year life

Cons

• 38 W power draw is listed, but the series includes lower-power options
• 9.7 lb and 10.6 x 19.7 x 10.6 in footprint

Who it's for: Buyers who want the most coverage and quietest operation in the Airmega Mighty series at the lowest current price.

Check price at cowaymega.com

Airmega MightyS AP-1512HHS

$299.99 tracking this price over 2 days · 3 readings

Check price at cowaymega.com

How we chose

How we chose

We compared the four Coway Airmega Mighty models on the specs that matter most for a mid-size room: listed CADR, listed coverage, noise, filter life, and current price. The Airmega Halo lists 253.3 CADR and 1,898 sq ft, the Mighty AP-1512HH lists 233 CADR and 1,748 sq ft, the Mighty2 lists 240 CADR and 1,800 sq ft, and the MightyS AP-1512HHS lists 210 CADR and 1,575 sq ft.

Noise ranges from 17.8 dB on the Halo to 24.4 dB on the MightyS, with the Mighty AP-1512HH and Mighty2 at 24 dB and 19 dB. Filter life is listed as 1 Year on the Halo and Mighty2, while the Mighty AP-1512HH lists a Deodorization Filter and the MightyS lists Honeycomb Activated Carbon.

On price, the Halo is $229.99, the Mighty AP-1512HH is $239.99, the Mighty2 is $269.99, and the MightyS is $299.99. The Mighty AP-1512HH costs $10.00 more than the Halo, and the Mighty2 costs $30.00 more than the Mighty AP-1512HH.

Who should skip these

If you need coverage beyond 1,898 sq ft, none of these four units is the right fit; the largest listed coverage here is 1,898 sq ft on the Airmega Halo. If you want a unit lighter than 9.7 lb, these are also not for you — the lightest listed weight is 9.7 lb on the Halo, and the others run 12.3 lb to 15.2 lb.

If you need a timer longer than 12 hours, look elsewhere as well; the Mighty2 lists a timer up to 12 hours, and the other three list a 1–4 timer. If noise is your deciding factor, note the listed figures: 17.8 dB on the Halo, 19 dB on the Mighty2, 24 dB on the Mighty AP-1512HH, and 24.4 dB on the MightyS AP-1512HHS.

On price, the MightyS AP-1512HHS at $299.99 is $70.00 more than the Halo, $60.00 more than the Mighty AP-1512HH, and $30.00 more than the Mighty2.

How to choose the right one

Start with the listed CADR and coverage for the room you actually have. The Airmega Halo is rated 253.3 CADR across 1898 sq ft, the Mighty2 240 CADR across 1800 sq ft, the Mighty AP-1512HH 233 CADR across 1748 sq ft, and the MightyS AP-1512HHS 210 CADR across 1575 sq ft. Match the larger figures to larger rooms; if your space is smaller, the lower-CADR units still cover it.

Then weigh noise and filter life. The Halo is listed at 17.8 dB, the Mighty2 at 19 dB, the Mighty AP-1512HH at 24 dB, and the MightyS AP-1512HHS at 24.4 dB. The Halo and Mighty2 list a 1 Year filter life; the Mighty AP-1512HH lists a Deodorization Filter and the MightyS AP-1512HHS a Honeycomb Activated Carbon filter. The Mighty2 adds a timer up to 12 hours.

Finally, look at the price steps. The Halo is $229.99. The Mighty AP-1512HH costs $10.00 more, the Mighty2 $40.00 more, and the MightyS AP-1512HHS $70.00 more. Between the Mighty AP-1512HH and Mighty2 the gap is $30.00, and between the Mighty2 and MightyS AP-1512HHS it is $30.00.

Questions readers ask

By Simone Ellery · Published 2026-09-23