A second hand oxygen concentrator can be a practical option for people who need ongoing oxygen therapy but face budget or availability constraints. These devices are refurbished or previously owned units that deliver concentrated oxygen while being lighter and often more affordable than new equipment.
Before choosing this route, understanding condition grades, certification standards, and maintenance history is essential for safety and performance. The following sections outline the key aspects of a second hand oxygen concentrator and how it compares to new alternatives.
| Key Specification | Typical Range | Notes for Second Hand Units | Regulatory Marker |
|---|---|---|---|
| Oxygen Purity | 90–95% | Verify with test reports; older sieve media may show lower purity | Medical grade certification |
| Flow Settings | 1–5 L/min | Check mechanical dials or digital controls for smooth adjustment | Prescription matching |
| Battery Runtime (if applicable) | 2–6 hours | Cycle count and charge capacity may be reduced | OEM or certified replacements recommended |
| Noise Level | 38–45 dB | Fan wear or loose parts can increase noise over time | Lower dB for quieter operation |
| Condition Grade | A–C | A like new, B moderate wear, C requires significant refurbishment | Third party inspection preferred |
Evaluating Second Hand Oxygen Concentrator Condition
How to Assess Wear and Functionality
Examining a second hand oxygen concentrator starts with checking the exterior for cracks, deep scratches, or housing damage that could affect seals. Testing each flow setting while monitoring oxygen purity with a calibrated pulse oximeter helps confirm that the internal sieve bed is still effective. Listening for unusual grinding or rattling sounds can reveal fan or motor issues that may lead to early failure.
Understanding Service History and Certification
Records, Maintenance, and Compliance
Reliable sellers should provide service logs, including dates of filter replacements, sieve bed changes, and calibration checks. Units certified to medical standards such as ISO 13485 often undergo rigorous functionality and safety testing beyond basic regulatory approval. Verifying that cables, connectors, and battery contacts show minimal wear reduces the risk of intermittent operation.
Comparing New and Second Hand Models
Cost, Warranty, and Performance Considerations
Second hand oxygen concentrators usually cost significantly less than new units, making them attractive for home use or temporary support in clinical settings. However, warranty coverage may be limited or expired, so budgeting for potential repairs is important. Comparing specs like flow range, weight, and battery life against prescription requirements ensures that a used unit still meets therapeutic needs.
Reliability, Accessories, and Long Term Use
What to Expect Over Time
With proper maintenance, a second hand oxygen concentrator can remain dependable for years, especially when sourced from reputable refurbishers. Replacing filters and cannulas at regular intervals preserves airflow quality and reduces the risk of contamination. Carrying cases, extra tubing, and portable batteries designed for the specific model can extend usability in mobile scenarios.
Key Takeaways for Choosing a Second Hand Oxygen Concentrator
- Review condition grades and request documented service and calibration records.
- Verify oxygen purity and flow settings with a professional test before purchase.
- Check warranty status and plan for possible refurbishment costs.
- Ensure all accessories, especially cannulas and filters, are included or available.
- Prioritize sellers who offer inspection options and clear return policies.
FAQ
Reader questions
Can a second hand oxygen concentrator meet the same medical standards as a new one?
Yes, if the unit has been properly refurbished, tested, and certified to relevant medical standards, it can deliver prescribed oxygen purity and flow consistently.
How can I verify the remaining lifespan of the sieve bed in a used concentrator?
Request service records that include sieve bed replacement dates and recent purity tests, and ask for an oxygen output measurement during a trial run.
What accessories should I look for when buying a second hand oxygen concentrator?
Check for extra tubing, nasal cannulas, carrying cases, and compatible batteries, and confirm that they are compatible with the specific make and model.
Is it safe to buy a second hand oxygen concentrator from online marketplaces?
It can be safe if you work with sellers who provide detailed condition reports, service logs, and allow third party inspection or local pickup for testing.