Coway Airmega AP-1512HH Mighty vs Coway Airmega ProX

The Mighty costs $100–$150. The ProX costs $500–$650. That's not a premium — that's a completely different budget category. For the price of one ProX, you could buy a Mighty for every major room in your home and have money left over. Unless the ProX's 1,000 sq ft coverage is solving a specific problem you actually have, the math doesn't work.

The ProX covers 1,000 sq ft at four air exchanges per hour — that's a genuinely large space, and no similarly priced competitor matches it. The Mighty covers significantly less. If you have an open-plan home where a single unit needs to handle a combined kitchen, dining, and living area, the ProX is the only one of these two that can actually do the job. But if your rooms are normal-sized, you're paying for coverage you'll never use.

The ProX has a handle and wheels, which WIRED specifically calls out as a genuine differentiator. Moving a 50-lb purifier between rooms without wheels would be miserable — with them, it's actually practical. But here's the catch: the Mighty weighs a fraction of that and can be carried with one hand. The ProX's portability feature exists to solve a problem the Mighty doesn't have.

Wirecutter ranks the Mighty as their top pick across all purifiers tested — that's a rigorous lab-and-real-world process, not a vibe. The ProX gets Reddit praise specifically for quiet operation in large rooms, which is a narrower and more specific endorsement. The Mighty's 88/100 consensus score versus the ProX's 75/100 reflects this gap. For most allergy sufferers, the Mighty is the answer the experts keep landing on.