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

Renting wins for short, bounded needs — weeks to a few months, while a prescription is being dialed in. Buying wins for anything longer, since oxygen therapy for chronic conditions is usually measured in years and ownership breaks even fast against any realistic rental rate. The formula: divide the purchase price of the machine you'd buy by your actual monthly rental quote — that's the month count where ownership stops costing more.

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.