How to Choose an Oxygen Concentrator: The Complete Buyer's Guide
How to Choose an Oxygen Concentrator
Oxygen therapy works best with the right machine for your prescription and your life. Here's how to choose home vs. portable, continuous vs. pulse, in plain language, from our team.
If you or a loved one has been prescribed oxygen therapy, the concentrator you choose shapes daily comfort, mobility, and independence. Unlike tanks, a concentrator makes oxygen continuously from room air — no refills. This guide walks through the types, how oxygen is delivered, the features worth comparing, and how to match a unit to your prescription and lifestyle.
In a hurry? The short version
- Oxygen is prescription medicine your doctor sets the flow rate and delivery type, and your machine has to match them.
- Home (stationary) units run continuously for home and overnight use; portable (POC) units are lightweight and battery-powered for staying active.
- Many people end up with both a stationary unit at home and a portable for going out.
What is an oxygen concentrator?
An oxygen concentrator is a medical device that pulls in room air, removes the nitrogen, and delivers concentrated oxygen to the user. Because it produces oxygen continuously, it never needs refilling which makes it a convenient option for long-term oxygen therapy compared with tanks.
Concentrators are commonly prescribed for people with:
⚠️Oxygen is a prescription medicine
- Always use oxygen exactly as prescribed. Your provider sets the flow rate and the delivery method match them, and don't change settings on your own.
- More is not better. Too little oxygen is dangerous, and too much can be harmful for some conditions.
- Not everyone is a candidate for pulse-dose delivery. Confirm with your provider before choosing a pulse-only portable unit.
The two types of concentrator
Concentrator vs. oxygen tank
| Feature | Oxygen Concentrator | Oxygen Tank |
|---|---|---|
| Produces oxygen continuously | Yes, makes its own | No, stores a fixed supply |
| Needs refills | No | Yes |
| Electricity required | Yes | No |
| Portable options | Yes | Limited |
| Maintenance | Low | Moderate |
For many long-term users, a concentrator is simply more convenient, it keeps generating oxygen instead of relying on a stored supply that runs out.
Continuous flow vs. pulse dose
How the machine delivers oxygen is one of the most important choices, and it's set by your prescription.
| Continuous Flow | Pulse Dose | |
|---|---|---|
| How it delivers | A constant stream, whether you inhale or exhale | A burst only when it senses you breathe in |
| Best for | Home use, sleeping, higher prescriptions | Active users, daytime mobility, portable units |
Not every patient is a candidate for pulse dose. Your provider will tell you which delivery method is right for you.
7 questions to ask before buying
Mostly at home, or on the go?
For home use, choose a stationary concentrator. For travel and an active lifestyle, choose a portable. Some people benefit from having both.
What flow rate did your doctor prescribe?
Not all concentrators deliver the same oxygen output. Always choose a device that meets your prescribed flow rate, this is the number that matters most.
Will you need oxygen while sleeping?
Many people need continuous-flow oxygen overnight. Discuss your nighttime requirements with your provider before buying, since not every portable unit can meet them.
How important is portability?
If you travel often, weigh the unit's weight, battery life, carrying case, recharge time, and whether it's FAA-approved for air travel.
How loud is it?
Modern concentrators are generally quiet, but levels vary by model. Lower noise matters most if you'll run it while sleeping.
Will you need backup power?
Consider extra batteries, AC power, a DC vehicle charger, and a backup oxygen supply for emergencies or outages.
What accessories will you need?
Common add-ons include nasal cannulas, oxygen tubing, humidifier bottles, replacement filters, carrying cases, and spare batteries. Browse oxygen accessories →
Features that matter most
- Oxygen flow capacity. The most important spec, make sure it matches your prescription.
- Battery life. Especially important for portable models and longer outings.
- Weight. Lighter units are far easier to carry through daily activities.
- Noise level. A quieter machine is more comfortable, particularly overnight.
- Ease of maintenance. Look for accessible filters and simple upkeep.
Quick recommendations
- Best for home use: a stationary concentrator, reliable, continuous operation for daily and overnight therapy.
- Best for active lifestyles: a portable concentrator (POC) for mobility without giving up therapy.
- Best for long-term therapy: many people keep a stationary unit at home plus a portable for travel and errands.
Related respiratory products
Shopping for oxygen equipment? These often come up too:
- Nebulizers. Deliver inhaled medications for asthma, COPD, and other respiratory conditions.
- Pulse oximeters. Monitor blood oxygen saturation at home.
- CPAP accessories. For managing sleep-related breathing disorders.
- Respiratory care products. Browse the complete respiratory therapy collection.
Frequently asked questions
Can I buy an oxygen concentrator without a prescription?
Requirements vary by country and local regulations. In many cases oxygen concentrators are medical devices that require a prescription. Check the rules where you live and consult your healthcare provider.
Can I travel with a portable oxygen concentrator?
Many portable concentrators are approved for airline travel. Before flying, confirm that your specific model meets your airline's requirements.
How long do oxygen concentrators last?
With proper maintenance, many concentrators provide years of reliable service. Follow the manufacturer's schedule for cleaning and replacing filters.
Can an oxygen concentrator run 24 hours a day?
Many stationary models are designed for continuous operation — but always follow the manufacturer's recommendations and your provider's instructions.
Do oxygen concentrators need maintenance?
Yes. Regular filter cleaning, periodic inspections, and replacing worn accessories keep performance and reliability up.
Not sure which fits your prescription? Talk to a person.
Locatel carries trusted respiratory brands, with specialists who help match equipment to your prescribed oxygen therapy — at our Hallandale Beach and Miami locations, and shipping across the U.S. and internationally. Bring your prescribed flow rate and we'll help you choose.
Shop oxygen concentrators · Browse respiratory care
This guide is for general informational purposes only and is not medical advice. Oxygen therapy must be used according to your healthcare provider's prescription. Always follow your provider's instructions for flow rate, delivery method, and duration of use.
