hepa-filtration
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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.
Carecubes
Carecubes makes the Carecube, an FDA 510(k)-cleared negative-pressure isolation canopy that turns any standard hospital bed into an airborne-isolation unit in about 20 minutes. Born from a DARPA-funded Ebola-era project at San Francisco research lab Otherlab, the device pulls air through an H14 HEPA filter, holds negative pressure, and lets caregivers reach patients through glove walls - isolating the pathogen instead of the patient. The Arden Hills, Minnesota company closed a $6.5M Series A in March 2026 and has deployed across dozens of communities and health systems.