Buying a Second-Hand CPAP Machine in Europe and the Prescription and Hygiene Rules You Cannot Skip
How the second-hand CPAP machine market in Europe really works before you send the money
No single EU rule governs a used machine, so ownership, a locked pressure setting, recall status and a sealed air path decide whether the bargain is real.
The short answer on buying a second-hand CPAP machine in Europe
There is no EU-wide ban on buying a second-hand CPAP machine in Europe, and no EU-wide permission either. EU MDR 2017/745 states in Recital (3) that the Regulation "does not seek to harmonise rules relating to the further making available on the market of medical devices after they have already been put into service such as in the context of second-hand sales". National law fills that gap. Legality is rarely what stops the sale. Ownership, pressure, traceability and hygiene are.
Four things break in a peer-to-peer purchase. The seller often does not own the device. The pressure was titrated, meaning set individually after a sleep study, for someone else's airway. The serial number may sit inside a Europe-wide recall. The internal air path cannot be cleaned outside a workshop. Two of those you can check before paying, and our walkthrough on checking a device in the EUDAMED database shows the lookup.
- MDR Recital (3) leaves resale to national law. There is no single EU answer.
- Ownership, pressure, recall status and the sealed air path are the real blockers.
What most used CPAP guides get wrong
They answer a European question with American rules
The pages ranking here settle legality with an American clearance process and American insurance rules. None of it governs a sale in Lyon, Leipzig or Leeds. Not one mentions CE marking, UKCA marking, the EU declaration of conformity, UDI or EUDAMED. A CPAP is a Class IIa active therapeutic device under MDR Annex VIII Rule 9, certified through a notified body.
They never ask who owns the machine
This is the flaw that costs money. Across much of Europe a CPAP is not a purchase. It is loaned by a payer or a homecare provider, so a seller can be sincere and still be selling what is not theirs. Their hygiene advice is generic too: soap, warm water, vinegar, with no line between the parts you can replace and the parts nobody can reach.
- US-framed guides cite a clearance process and payers Europe lacks.
- The European question is who owns the device and who will service it.
Is it legal to sell a second-hand CPAP machine in Europe
The answer is national, not European. The seller's status changes it again. Three MDR provisions still bite.
Article 14 makes anyone supplying devices as a business a distributor. Before supply they must verify the CE marking, the EU declaration of conformity, the labelling and instructions for use, and a UDI assigned under Article 27. Volume flipping is distribution, not private sale.
Article 10(11) requires the label and instructions for use to be in the official language of the Member State where the device is placed on the market or put into service. That is why a cross-border bargain arrives with an IFU you cannot read and a plug that does not fit.
Recital (38) treats the reprocessor of a single-use device as "the manufacturer of the reprocessed device". A CPAP is not single-use, so that wording does not transfer directly. The direction does. A business selling a refurbished CPAP machine takes on duties a private seller never has.
| Country | Who usually owns it | National pathway | Effect on a private sale |
|---|---|---|---|
| France | The prestataire de santé à domicile (PSAD) that installed it | PPC prescribed by a pneumologue or sleep-trained physician, valid four months then one year; entente préalable at each renewal, needing satisfactory 28-day observance | A Leboncoin listing is usually provider equipment: outside the LPPR pathway, with no télésuivi record |
| Germany | Often the Krankenkasse: §33(5) SGB V allows a Hilfsmittel to be supplied leihweise, on loan | Prescription and supply through the Hilfsmittelverzeichnis route | Many Kleinanzeigen listings are devices the seller is obliged to return |
| United Kingdom | Frequently NHS sleep service loan equipment | Devices must bear CE, UKCA or CE UKNI marking; the MHRA advises checking for damage, registering the device and reporting problems via the Yellow Card scheme | Loan kit is not the patient's to sell, and gives your sleep service nothing to follow |
| Other EU and EEA | Insurer, homecare provider or the patient | National law, since Recital (3) does not harmonise second-hand sale | Get proof of ownership in writing. Marktplaats, Wallapop, Subito and Gumtree verify nothing |
- Legality is national, but MDR Articles 14 and 10(11) still reach business and cross-border sales.
- In France, Germany and the UK the machine is often not the seller's.
Why a stranger's pressure settings will not transfer to you
A CPAP prescription is a number produced for one airway. It is either a fixed pressure in cmH2O or an auto-titrating (APAP) minimum and maximum range, set after a diagnostic study and revised from your own data. A second-hand CPAP machine arrives carrying a stranger's numbers.
How the number is produced
Diagnosis of obstructive sleep apnoea (OSA), the repeated collapse of the upper airway during sleep, comes first. In-lab polysomnography or a home sleep apnoea test, also called respiratory polygraphy, produces an apnoea-hypopnoea index (AHI): breathing pauses per hour of sleep. Clinicians read it beside an Epworth Sleepiness Scale score and an oxygen desaturation index (ODI). In the Swiss HypnoLaus cohort (Heinzer et al., The Lancet Respiratory Medicine, 2015), median AHI was 6.9 events per hour in women and 14.9 in men, and an AHI of 15 or more affected 23.4% of women and 49.7% of men.
At titration or renewal the sleep unit reads the usage report off the device: hours per night, nights used, residual events, mask leak. French reimbursement is tied to that loop, with indications set at an IAH of 30 or more, or 15 to 30 with at least 10 micro-arousals per hour or an associated serious cardiorespiratory disease.
The clinical menu is locked on purpose
Pressure lives in the clinical menu, sometimes called provider mode, behind a clinician settings lock. Your patient menu offers ramp and expiratory pressure relief (EPR), comfort features rather than therapy. Opening the rest needs a technician's access sequence, and many European providers will not service a device they did not supply. Set too low, apnoeas continue while the wearer feels protected. Set too high, clinicians commonly report the leaks and swallowed air that end therapy.
Abandoned machines are part of why the marketplaces are full. Pooled across 82 studies, CPAP non-adherence was 34.1% (Rotenberg et al., Journal of Otolaryngology – Head & Neck Surgery, 2016).
- Pressure is titrated per patient, then revised from usage data. It cannot be inherited.
- A provider who did not supply the device may refuse to unlock it.
Traceability, UDI and the recall check to run before you pay
Run the serial number first. Under the MDR a device is assigned a UDI, a unique device identification code carried on the label as a UDI carrier, and a business seller must verify it before supply. On a second-hand CPAP machine that number answers the only question that matters. Is this unit safe to run?
EUDAMED, the EU medical device database, makes part of that checkable. Its first four modules, covering actor registration, UDI and device registration, notified bodies and certificates, and market surveillance, became mandatory on 28 May 2026. That is recent, so an older unit may not be listed. Treat a gap as a reason to ask for documents, not proof.
Safety problems travel through a field safety notice (FSN) and the field safety corrective action (FSCA) behind it. The largest began in June 2021, over degrading PE-PUR sound-abatement foam in one manufacturer's sleep therapy devices. That manufacturer's own field safety notice update (2024) records 1,037,268 repair kits and replacement devices for Western Europe, and 127,340 remediated devices shipped to the UK as of 31 October 2024. Whether the unit in front of you was remediated, replaced or shelved is a serial-number question.
- Ask for a clear photo of the rating label: model, serial number and UDI carrier legible.
- Run that serial through the manufacturer's own recall lookup page.
- Cross-check your national authority's field safety notice listings: ANSM (France), BfArM (Germany), AEMPS (Spain), MHRA (UK).
- Look the device and manufacturer up in EUDAMED, then register the unit once it is yours.
No rating label photo, no purchase. Our guide to comparing CPAP machines sold in Europe sets out the specifications worth paying for instead.
- The serial number is the entire safety check on a used device.
- Field safety notices come from national authorities too, not just manufacturers.
Hygiene, biofilm and the parts you can never disinfect
On a second-hand CPAP machine the removable parts can be made safe by replacing them. The sealed parts cannot. That split is the honest answer to the infection question.
The contamination is measured, not hypothetical. In a prospective multicentre cohort (Min et al., Clinical and Experimental Otorhinolaryngology, 2024), bacteria were detected in 7 of 27 CPAP tubes (25.9%) and 22 of 27 filters (81.5%), with fungi in 2 tubes (7.4%) and 16 filters (59.3%), even after short periods of use. Humidification moves material around. Bacteria were recovered from the breathing tubes in 9 of 11 tests when the heated humidifier water was contaminated (Ortolano et al., Journal of Clinical Sleep Medicine, 2007).
| Component | Realistic action for a used-machine buyer | Why |
|---|---|---|
| Mask cushion and headgear | Replace, never reuse | Silicone has already deformed to another face |
| Tubing or heated tube | Replace | Bacteria in about a quarter of tubes tested (Min et al. 2024) |
| Humidifier chamber | Replace | Contaminated water reached tubing in 9 of 11 tests (Ortolano et al. 2007) |
| Antibacterial or hypoallergenic filter | Replace, keep spares | 81.5% of filters grew bacteria (Min et al. 2024) |
| Internal blower and air path | Cannot be reached | Sealed housing; no consumer method enters it |
| Electronics, hour meter, SD card | Nothing to disinfect | Holds the previous owner's usage hours and therapy data |
Warm humid tubing suits biofilm, the sticky layer bacteria build on wet surfaces, and the organisms studied here include Pseudomonas aeruginosa, staphylococci and moulds such as Aspergillus. Ozone and UV-C cabinets are sold as the fix. They are not. Disinfection reaches the surfaces an agent touches; a sealed blower housing is another job. Our guide on preventing mould in a CPAP humidifier covers a chamber you own.
- Mask, tubing, chamber and filters are consumables. Budget a full new set on day one.
- No consumer device, ozone and UV-C included, disinfects the internal air path.
What a private sale costs you in guarantee and licence terms
A second-hand CPAP machine carries two invisible costs. Both are bigger than the discount.
The statutory guarantee disappears
Under EU consumer rules the minimum two-year legal guarantee applies to goods bought from a trader. Goods bought from private individuals are not covered at all. For second-hand goods from a professional seller the period may be shortened, but never below one year. Buying peer-to-peer forfeits the repair-or-replacement obligation and the reversed burden of proof.
The driving licence evidence never gets created
In the UK a driver with moderate or severe OSAS, meaning an AHI of 15 or above, must not drive and must notify the DVLA. Licensing then depends on control of the condition, improved sleepiness and medically confirmed adherence, reviewed at least every three years for Group 1 drivers and annually for Group 2. With mild OSA the driver must not drive until symptoms are controlled, and must notify the DVLA if still uncontrolled after three months.
A marketplace machine produces none of that. No clinician follows it, and nobody signs a form for a device they never saw. Other European countries set their own fitness-to-drive rules.
- Private sales sit outside the EU legal guarantee; professional second-hand sales keep at least one year.
- Licence review needs clinician-confirmed adherence data an off-market machine cannot generate.
Five checks before you pay for a second-hand CPAP machine
Run these in order. Stop at the first failure.
1Confirm the diagnosis is yours
You need your own AHI from a sleep study. Without that number no device choice is rational.
2Get proof of ownership in writing
Ask whether an insurer or homecare provider supplied it. A loaned device is not the seller's to transfer.
3Ask who will open the clinical menu
Call a local provider first. Many refuse devices they did not supply, and unsettable pressure makes it a paperweight.
4Price the consumables in
Mask, tubing, chamber and filters all need replacing at once. Add that cost before comparing with a new unit.
5Check the language, plug and seller status
Article 10(11) entitles you to an IFU in your language, and a business seller owes at least a one-year guarantee.
- Ownership and clinical-menu access are answered by other people. Ask both before money moves.
- If a check fails, the discount is not a discount.
If price is the real reason you are shopping second-hand
Then the question is not which used CPAP machine for sale to pick. It is what your AHI is, and what your own country already owes you.
Across much of Europe you do not buy a CPAP at all. Germany's §33(5) SGB V lets the Krankenkasse supply the Hilfsmittel leihweise, on loan. France installs and adjusts equipment through a prestataire under entente préalable. UK sleep services issue loan equipment. Ask your sleep unit first.
At the mild end, the alternatives are real devices
For snoring and mild-to-moderate OSA, common non-CPAP options include dentist-fitted mandibular advancement devices, positional therapy that keeps you off your back, single-use nasal EPAP valves that add resistance on the way out, and intranasal stents that hold the airway open. None of them replaces knowing your AHI first.
Back2Sleep sits in that last category: a CE-certified Class I soft silicone intranasal stent that keeps the nasal airway open during sleep, sold without a prescription, with a four-size starter kit at around €39 and a 30-day money-back period. No pressure setting to guess at, no previous owner's biofilm, no recall population to check. In 71 patients with mild-to-moderate OSA (AHI 5 to 20 per hour), a nasal airway stent significantly improved AHI, supine AHI, ODI and snore volume: 25% had a complete and 10% a partial AHI response, while roughly 30% did not tolerate it because of side effects (Ohtsuka et al., Respiration, 2021).
- Ask about your national pathway first. In several countries the machine is loaned, not sold.
- Moderate-to-severe OSA and licence-dependent driving stay with CPAP and a clinician.
What Back2Sleep Users Say
Frequently Asked Questions
Is it legal to sell a used CPAP machine in Europe?
EU MDR 2017/745 Recital (3) says the Regulation does not harmonise rules on making devices available after they are put into service, including second-hand sales. National law decides, so the answer changes at each border. The practical obstacle is ownership: machines supplied in France, Germany and the UK are frequently loans.
Can you buy a second hand CPAP machine without a prescription?
On peer-to-peer marketplaces yes, because nobody verifies anything there. That does not make the machine usable. Therapy pressure sits behind a clinician settings lock, and in France the first prescription must come from a pneumologue or a sleep-trained physician, with prior authorisation and adherence measured over 28 days at each renewal.
Can you use someone else's CPAP machine?
Not safely. Their pressure was titrated for their airway after a sleep study, and their mask, tubing, humidifier chamber and filters carry their biological load. A 2024 multicentre cohort in Clinical and Experimental Otorhinolaryngology cultured bacteria from 81.5% of CPAP filters and 25.9% of tubes, even after short periods of use.
How do you disinfect a used CPAP machine?
You replace rather than disinfect. Mask, tubing, humidifier chamber and filters are consumables and should all be new. The sealed blower and internal air path cannot be reached by any consumer method, ozone cabinets and UV-C boxes included, since those disinfect the surfaces they touch rather than an enclosed air path.
Can the pressure settings on a used CPAP machine be changed?
Only by someone with clinician access. Pressure lives in the clinical menu behind a provider lock, while your patient menu holds ramp and expiratory pressure relief. Many European homecare providers decline to service a device they did not supply, so an unsettable machine simply stays on the previous owner's numbers.
How do I check if a second-hand CPAP machine was part of the recall?
Take the serial number from the rating label, run it through the manufacturer's recall lookup page, then cross-check your national authority: ANSM, BfArM, AEMPS or the MHRA. The 2021 sound-abatement foam notice alone accounted for 1,037,268 repair kits and replacement devices in Western Europe (manufacturer field safety notice update, 2024).
Do I need a home sleep apnoea test before buying a CPAP machine?
Yes. Treatment starts from a measured apnoea-hypopnoea index, produced by in-lab polysomnography or a home sleep apnoea test, usually alongside an Epworth Sleepiness Scale score. Without that number nobody can say whether a machine, an oral appliance, or a simpler nasal device is the right answer for you.
Are used CPAP machines worth anything?
To a professional refurbisher, sometimes. To a private buyer, less than the listing suggests. A full consumable set is needed immediately, the EU two-year legal guarantee does not apply to private sales, and a second-hand purchase from a trader can carry a guarantee reduced to one year.
Ready for quieter nights? Discover the Back2Sleep starter kit and find the right fit for you.
Not sure if you are at risk? Take our sleep risk screening to find out in just a few minutes.
Want to learn how it works? Explore the Back2Sleep nasal stent designed for comfortable, effective relief.