If you are using insurance, you will typically need results from a formal sleep study (either in-lab or a Home Sleep Test).
It is highly recommended to buy only from authorized retailers like Lofta , The CPAP Shop , or CPAPsupplies.com to ensure you receive authentic equipment with a valid warranty. Top Recommended APAP Machines (2026)
In the United States, APAP machines are Class II medical devices and legally require a prescription from a healthcare provider for purchase.