air-purifier
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The Company That Sells You Peace of Mind, One Filter at a Time
AirDoctor and AquaTru turned invisible anxieties - what's in your air, what's in your tap - into a nine-figure consumer business. Here's how a direct-response veteran built it.
The Company That Rents You Cleaner Air
Coway spent three decades convincing Korea to lease its water purifiers by the month. Now its Los Angeles office is testing whether Americans will pay a subscription for cleaner air, softer water and a bidet that cleans itself.
The Austin company that put a lifetime warranty on the air you breathe
Alen sells air purifiers that look like furniture and carry a lifetime warranty - as long as you keep buying filters. Twenty years in, that trade has built a two-million-customer business out of Austin.
Windmill
Windmill is a New York-based modern air care brand that redesigned the window air conditioner - and the unglamorous category around it - into sleek, app-connected, energy-efficient products. Founded by brothers Mike and Danny Mayer with third-generation AC expert Ryan Figlia, the company has expanded from a single quiet window unit into a full suite of air care: ACs, medical-grade HEPA air purifiers, fans, and subscription central air filters. With over 100,000 ACs sold and shelf space in Home Depot, Best Buy, and Lowe's, Windmill is betting that clean, comfortable air should look good and feel effortless.