In the U.S., an oxygen tank typically costs $110–$300 for E size and $600–$800 for H steel, plus $18–$45 per refill.
Shopping for a medical O2 bottle gets confusing fast because prices swing by size, material, and whether you’re buying empty or filled on exchange. Below is a clear walkthrough: what each common size holds, what buyers usually pay, what refills run, and the extras that matter so you don’t overspend.
Oxygen Tank Cost: Size-By-Size Breakdown
Medical cylinders are labeled by letters (M6/B, M9/C, D, Jumbo D, E) for portable use and by larger letters (M60/M, H or K) for stationary or industrial settings. Aluminum is lighter and common for portable models; steel shows up more with the biggest bottles. Prices below reflect new, empty cylinders with standard medical valves where noted.
| Common Size | Approx. Capacity (L) | Typical Empty Price (USD) |
|---|---|---|
| M6 (B) | ~161 | $120–$200 |
| M9 (C) | ~244 | $110–$160 |
| D | ~400 | $130–$260 |
| Jumbo D | ~575 | $185–$295 |
| E | ~680 | $150–$285 |
| H/K (steel) | 6,900–7,800 | $600–$800+ |
Where do those ranges come from? Medical suppliers publish list prices that provide a reliable ballpark: Bound Tree lists an M6 around $199, M9 around $114, D around $143, Jumbo D around $294, and an E-size around $284; a steel H cylinder list price appears near $790. Big box marketplaces show similar numbers, with E-size aluminum bottles landing between roughly $75 and $150 depending on brand, finish, and valve style. Specialty rehab retailers commonly price a travel-friendly M6 near $130–$195 on sale and a bit higher at MSRP.
What You Pay To Refill Or Exchange
For ongoing oxygen, you’ll either exchange the empty for a full bottle or get a refill. Welding-gas counters that also handle USP oxygen often post per-cylinder fees by cubic footage. University and government price sheets are helpful references here: small 20–60 cf exchanges frequently run about $18–$24 each. Dedicated medical suppliers commonly charge in the $35–$45 range for a D or E refill when sold over the counter. Heavier industrial bottles vary by region and contract.
Keep in mind: most national gas distributors show refill pricing only after account setup and a zip-code check, since rates depend on delivery, rental vs. owned bottle, hazardous materials fees, and local surcharges.
Refill Snapshot By Size
Use this as a directional guide; your local counter will quote exact figures.
| Item | Typical Cost | Notes |
|---|---|---|
| 20–60 cf exchange | $18–$24 | Seen on public university gas schedules |
| D/E medical refill | $35–$45 | Common cash price at retail medical shops |
| Large H/K exchange | $25–$45+ | Shop-dependent; account rates vary |
Buy, Rent, Or Lease: Which Route Costs Less?
There are three ways to get bottled oxygen: purchase a cylinder you own, lease one from a welding supplier, or rent through a home-care company as part of a therapy package. Owning makes sense when you want to refill anywhere and plan to keep the bottle for years. Leasing is attractive if you want the supplier to handle testing and maintenance and you prefer easy swaps. Rentals often bundle delivery, regulators, and service, which can be convenient for short-term recovery.
Ownership Costs You Should Expect
- The cylinder itself: see the size table above for typical new pricing.
- Valve type: most home and EMS bottles use a CGA-870 post valve; industrial oxygen uses CGA-540. Adapters exist, but it’s easier to match your regulator from day one.
- Hydrostatic tests: every 5 years for most aluminum and steel bottles in the U.S. Sellers mark the last test on the shoulder. If a used bottle is out of date, add ~$30–$50 to retest locally.
Lease And Exchange Basics
Leases typically include a filled bottle at signup plus maintenance; you pay a smaller fee each time you swap empties. Some suppliers restrict swaps to their locations while you hold the lease. If you purchase a bottle outright, you can usually exchange at any shop carrying the right valve and purity grade.
What Drives Price Up Or Down
Several levers change what you’ll pay on the day:
- Size and material: bigger capacity and steel construction cost more up front, though a steel H offers the cheapest oxygen per liter.
- Valve and gauge: a toggle knob or integrated gauge adds convenience but can lift the price.
- Brand and certification: DOT-approved, recently hydro-tested bottles from known medical brands fetch higher prices than generic surplus.
- Regional fees: hazmat, fuel surcharges, and delivery minimums vary by supplier and zip code.
- Used market: second-hand bottles can be bargains if they have valid test stamps and the right valve. Factor in a test if dates are close.
Accessories And Hidden Costs
You’ll need a few extras to make a new cylinder useful at home or in transit:
- Regulator or conserver: $30–$80 for a simple 0–15 LPM regulator; conserving devices cost more but stretch runtime.
- Nasal cannulas and tubing: budget $5–$15 per set and change on schedule.
- Carry bag or cart: $20–$150 depending on size and build.
- Refill kit or home-fill station: specialty compressors that refill small bottles from a concentrator run into the thousands and need a compatible setup.
Safety Rules That Also Affect Your Wallet
Oxygen supports combustion, so suppliers and landlords care about storage and transport. U.S. workplace rules require cylinders to be secured, capped, and kept away from flames and oils. Those rules influence home setups too: mounting brackets, chains, and distance from ignition sources help prevent accidents and fines in commercial spaces.
For authoritative guidance, see the OSHA standard on compressed gases (29 CFR 1910.101) and the FDA consumer update on home oxygen. Both are written for safety first, and they’re handy references when a building manager or supplier needs the rule in black and white.
How To Pick The Right Size
Think in liters and minutes. A typical E-size holds about 680 liters at 2,000 psi. At 2 LPM continuous, that’s roughly 5.5 hours; at 1 LPM with a pulse-dose conserver, outings can stretch much longer. If you only need short trips, an M6 (about 161 liters) paired with a conserving device can be easier on the shoulders. If you need all-day supply without juggling bottles, a larger D or Jumbo D plus a spare is a practical middle ground. For workshops or labs, a tall H/K bottle on a chained stand gives long runtimes with fewer exchanges.
Real-World Price Examples
Here are examples you can use to sanity-check quotes:
- Portable M6: specialty retailers often show sale prices near $130–$195, and EMS suppliers list prices up to about $199 for an empty aluminum bottle.
- Mid-size D: medical suppliers list empty aluminum D cylinders around $140–$260, with Jumbo D models around $185–$295.
- Standard E: list prices from medical distributors run about $147–$285 for a new empty cylinder; marketplace listings are commonly $75–$150 depending on brand.
- Tall steel H: list pricing near $790 for a new cylinder is common, while refill/exchange fees for owned bottles often fall in the $25–$45 range at welding counters.
- Refills for small bottles: public university schedules often show $18–$24 per exchange for 20–60 cf sizes; retail medical shops quote $35–$45 to refill a D or E on site.
Smart Ways To Save Without Cutting Corners
- Match the valve to your gear: buying the wrong valve means another regulator or an adapter later.
- Check the test stamp: a bottle with a recent hydro date saves you from paying for a retest right away.
- Buy the right capacity once: two undersized bottles plus bags and extra trips can cost more than one larger size that fits your routine.
- Ask about exchange networks: if you travel, owning a common size with a standard valve makes swaps painless.
- Keep spares secured and capped: safe storage protects your deposit, your flooring, and your insurance risk.
Quick Runtime Math You Can Trust
To estimate how long a bottle will last, divide the rated liters by your flow rate in liters per minute. An E-size near 680 L at 2 LPM gives about 340 minutes, or a bit over 5.5 hours, in continuous mode. Pulse-dose conservers stretch that by delivering bursts only on inhalation, so real-world runtime can be two to four times longer depending on your breathing pattern and activity level. Always test your setup at home first, then plan buffers for traffic, appointments, and delays.
Checklist Before You Buy
- Prescription and purity: for medical use, you’ll want USP oxygen from a supplier that fills to medical standards. Bring your Rx if your counter asks.
- Size fit: measure the trunk, closet, or wheelchair rack where the bottle will ride. Height and diameter vary by brand.
- Transport plan: carts and straps prevent dents and valve damage in the car. Never lay a charged cylinder where it can roll.
- Refill access: confirm nearby exchange locations and hours, and ask which sizes and valves they keep in stock.
- Emergency backups: a spare regulator, extra tubing, and simple signage near storage points make outages less stressful.
Bottom Line
Budget roughly $120–$300 for a new portable aluminum bottle, around $150–$285 for a standard E, and $600–$800 for a tall steel H. Add $18–$45 for each refill or swap, plus a regulator, tubing, and a way to carry the bottle. With the right size and a good local counter, oxygen stays dependable and affordable. If a quote feels out of range, ask for the size code, valve type, and whether the price is for a brand-new cylinder or an exchange credit, then compare across two nearby suppliers before you buy for similar quotes.
Method notes: Price ranges were compiled from current medical-supply list prices and retail listings, public refill schedules, and supplier program pages available at publication.