Renting vs. buying an oxygen concentrator: the math at 3, 6, and 18 months

The formula is one line: divide the purchase price of the machine you'd actually buy by the monthly rental quote you've actually been given, and you have the month count where ownership breaks even. We deliberately won't invent a 'typical' rental rate here — quotes vary widely by market and supplier — but the structure of the decision doesn't vary at all: everything before that month favors renting; everything after favors buying.

Renting genuinely wins for short, bounded needs: post-surgical recovery measured in weeks, a temporary prescription while a condition stabilizes, or a trial period while your prescriber dials in your flow requirements. It also wins when someone else maintains the machine and swaps it on failure — that service component is real, and for a three-month need it's worth paying for.

Ownership wins on duration, and oxygen therapy for chronic conditions is usually measured in years. A $995 stationary unit crosses over quickly against any realistic rental rate; even a $2,995 portable crosses within the first couple of years. Owned machines also retain resale value, and the refurbished market exists precisely because these machines outlive their first owners' needs. The rental alternative at 18 months is money spent with nothing owned and the same monthly bill ahead of you.

If you're weighing this through Medicare rather than out of pocket, note that Medicare's oxygen benefit is structured as a 36-month supplier rental with its own rules about who chooses the equipment — we've written separately about what that does and doesn't get you. Self-pay buying is the path for picking your exact machine and owning it outright; that's the trade CIRRUS is built around, stated plainly.