What Size Oxygen Concentrator Should I Rent?
When you’re looking to rent an oxygen concentrator, choosing the right size isn’t about physical dimensions — it’s about finding a machine that matches your oxygen flow requirements and lifestyle. At Liberty Medical, we help you choose the best oxygen concentrator for your travel, recovery, or everyday medical needs.
Understanding Flow Settings
The most important factor in sizing your concentrator is your prescribed oxygen flow rate. This is typically measured in liters per minute (LPM) for continuous flow or in pulse dose settings (1–6) for portable units.
Continuous flow: Common in stationary units and some heavy-duty portables. These machines provide a steady stream of oxygen, often required for nighttime use or advanced respiratory conditions.
Pulse dose: Delivers oxygen only when you inhale. Ideal for mobile users who don’t require oxygen while sleeping and want a lightweight solution.
Common Flow Prescriptions
- 1–2 LPM or pulse setting 1–3: Most portable units can handle this.
- 3–5 LPM: Requires a more powerful POC or stationary unit like the Oxlife Independence or Inogen At Home.
- 5+ LPM: You’ll need a high-capacity stationary concentrator for safe, effective therapy.
If you’re unsure of your prescription, we can help you get the right paperwork in order. Read more about oxygen prescription requirements.
Portable vs. Stationary: Which Size Fits You?
The right size concentrator also depends on your intended use. Do you plan to travel, or will you stay home during your rental period? Here’s a breakdown:
✅ Portable Oxygen Concentrators
These lightweight machines typically offer pulse dose delivery and are perfect for flights, cruises, and road trips. See our FAA-approved models for air travel compatibility.
- Ideal for settings 1–3
- Battery operated and airline friendly
- Popular models: Inogen One G5, Rove 6, CAIRE FreeStyle Comfort
🏠 Stationary Oxygen Concentrators
Designed for home use, these units offer higher flow rates and continuous oxygen. They’re great for people with more advanced oxygen needs or overnight therapy.
- Supports up to 5–10 LPM continuous
- Plugs into a wall outlet – no batteries needed
- Example: Inogen At Home — compact but powerful
Matching the Right Unit to Your Needs
Here’s a quick reference chart:
| Need | Recommended Type | Example Model |
|---|---|---|
| Light travel, mild COPD, daytime only | Pulse dose POC | Inogen One G5 or Rove 6 |
| Travel + sleep, more flow needed | Pulse + Continuous Portable | Oxlife Independence |
| Full-time home use | Stationary concentrator | Inogen At Home |
| High LPM or advanced COPD | High-output stationary | Call us for recommendations |
We’ll Help You Choose
Still unsure about sizing? That’s what we’re here for. Our oxygen specialists will match your prescription and travel plans to the perfect machine. Plus, we’ll make sure it’s delivered on time, ready to go.
Click here to request your oxygen concentrator rental or call our team at 800-375-6060.
Bonus: Need Help Flying With Your Machine?
If your travel includes air travel, don’t miss our full guide on oxygen safety tips for holiday travel and FAA-approved concentrators.
At Liberty Medical, we believe your oxygen therapy should fit your lifestyle—not limit it. Let us help you breathe easy, wherever you go.
Contact Us!
📞 Call us at 800-375-6060 or 📧 email info@traveloxygen.com — we’re your go-to for oxygen concentrator rentals, buybacks, and purchases. Reach out today and let Liberty Medical take care of the rest!