Pari Medical

The power went out at 2 a.m. and her CPAP screen went dark. A battery sat in the closet. She had never learned how long it would actually keep her machine running.

Insurance says rent first, the math says buy. Here is what a CPAP rental really includes, when the monthly fees stop making sense, and how to own one without renting.

Every machine page lists the same four features. Only one of them has trial evidence that people use their CPAP more. Here is which features matter for your situation.