Where to Buy Refurbished CPAP Machines: A Complete Guide

A refurbished, or pre-owned, CPAP from a licensed retailer is a safe and much cheaper way to start or continue therapy. It is professionally sanitized, fitted with new consumable parts, backed by a warranty, and it still requires your prescription. A machine sold as-is by a stranger on an online marketplace or classifieds site is a different and riskier situation entirely.

If you're exploring refurbished CPAPs because the cost of a new machine feels out of reach, or you need a compact backup for travel, you're not alone. Thousands of people find their way to pre-owned units every year for exactly these reasons, and the savings are real as long as you know what to check and where to buy.

Make a confident purchase by understanding the differences between refurbished, used, and open-box units. Checking run hours, recall status, warranty, and prescription requirements helps you focus on what matters: effective sleep therapy.

Not sure which CPAP type is right for you? Our best CPAP machines review compares the top options.

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1. Where Can I Buy a Refurbished CPAP Machine Online?

The safest places to buy a refurbished CPAP online are licensed CPAP retailers and DME providers that require a prescription, replace the consumable parts, and back the machine with a warranty. Skip general marketplaces, where none of that is guaranteed.

Trusted retailers like Sleeplay follow a documented refurbishing process that includes a thorough inspection, sanitization, and replacement of key parts. When you buy from a specialized retailer, you can be confident in these crucial factors:

• Prescription handling: Reputable sites require a prescription to be uploaded at checkout, so the device is correctly configured for your specific needs.
• Transparent machine history: They provide clear information about the machine's runtime, so you know how much it's been used.
• New, included parts: A quality refurbished unit comes with new filters, tubing, and a new water chamber to guarantee hygiene and optimal function.
• Warranty: Sleeplay's refurbished machines come with a 1-year warranty, giving you peace of mind.
• Documented process: The retailer can clearly explain their sanitization and refurbishment steps, proving the machine is safe and reliable.

Here's a quick comparison of the available buying options:

You can find a selection of pre-owned CPAP machines in Sleeplay's pre-owned CPAP collection, including the Transcend Micro, ResMed AirMini, ResMed AirSense 11, ResMed AirSense 10, Luna G3, and Luna TravelPAP.

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2. Refurbished vs. Used vs. Open-Box: What Is the Difference?

Refurbished means professionally inspected, sanitized, and restored with new parts and a warranty. Used means sold as-is with its original worn parts and no guarantee. Open-box means an unused machine discounted for damaged packaging or a return. The difference decides your safety, not just your price.

A refurbished (or pre-owned) CPAP has been thoroughly inspected, medically sanitized, and tested to meet the manufacturer's original performance standards. All worn and consumable parts, including the air filters, tubing, and water chamber, are replaced with brand-new components. The process is documented, and the machine comes with a warranty from the retailer.

A used CPAP is sold as-is, often by a private individual on a general marketplace. It hasn't been professionally cleaned, tested, or restored. It comes with its original, used parts, and there's no proof of performance, no warranty, and no guarantee of reliability.

An important detail many buyers miss: manufacturer warranties are non-transferable. ResMed's warranty applies only to the initial buyer and cannot be transferred [7], and Philips states the same while also excluding consumable parts [9]. This means a privately sold used machine carries no warranty, whereas a licensed retailer adds its own warranty to a refurbished unit.

Open-box is a third category worth knowing. An open-box CPAP is an unused machine discounted because the box was opened, the packaging was damaged, or it was a display or returned unit. Since it hasn't been used, it doesn't need sanitization, and it often comes with a full or near-full manufacturer warranty.

For a deeper look at the used CPAP market, check out our guide on used CPAP machines and whether they're worth your money.

3. What to Check Before You Buy (6-Point Checklist)

Before you buy any refurbished CPAP, confirm six things: a prescription step at checkout, a written warranty, new consumable parts, the run-hours reading, a recall check, and a clear return policy.

1. Prescription Readiness

A valid CPAP prescription is required to purchase a refurbished machine, just like a new one. Reputable sellers have a mandatory prescription upload step at checkout. Have a digital copy of your prescription ready before you start shopping.

2. Warranty

A pre-owned device should come with at least a 1-year warranty from the retailer. This protects your investment and proves the machine has been thoroughly tested for quality. If a seller doesn't offer a warranty, it's best to walk away.

3. What's Included

A truly refurbished machine should come with brand-new, sterile consumable parts. This includes a new air filter, new tubing, and (for machines with a humidifier) a new water chamber and seals. Always confirm that these fresh parts are included.

4. Run Hours

All CPAP machines track their run hours, which is a record of how long the motor has been in use. Ask the seller for a run-hours report or a screenshot of the usage data. A machine with fewer hours generally has less wear on the internal components. For a detailed breakdown of what the numbers mean, see the blower-hours section below.

5. Recall Status

Check the machine's model and serial number against the manufacturer's recall database before you finalize your purchase. This is a critical safety step, especially given the Philips Respironics recall that affected millions of devices. See the dedicated Philips recall section below for details.

6. Return Policy and Support

Make sure the seller has a clear return policy and offers accessible customer support. Reputable online retailers will clearly list their policies on their website, providing a safety net if the machine doesn't work as expected.

Here's the checklist in green-flag and red-flag format:

4. How Many Hours Is Too Many? Blower Hours, Lifespan, and the Data Card

There's no official hour limit for a CPAP, but the blower hour meter indicates how much life the machine has left. At about 8 hours a night, 1,000 hours is roughly 4 months of use, and 15,000 hours is more than 5 years.

Every CPAP logs its motor run hours internally, and a refurbished seller should share that reading with you before you buy. On most machines, you can find the hour meter in the device's settings or clinician menu. The number doesn't tell you whether a machine is "good" or "bad" on its own, but it gives you a reliable wear signal to weigh alongside the warranty and price.

The math is straightforward. If you use your CPAP for about eight hours a night, that's roughly 2,920 hours per year. So a machine showing 5,000 hours has about two years of use, while a reading above 15,000 hours indicates more than five years of nightly use. Most insurers, including Medicare, treat about five years as a CPAP's reasonable useful lifetime for replacement purposes, though a well-maintained machine can run longer.

No manufacturer publishes an official hour cutoff for a CPAP motor. Use the hours as guidance, not a hard pass or fail.

The Data Card and Modem

Many CPAP machines store therapy data on an SD card or transmit it over a built-in cellular modem. ResMed's AirSense 11, for example, automatically sends your sleep data to the myAir app and your provider's AirView dashboard. Older models like the AirSense 10 rely on an SD card that you can bring to your doctor.

When buying refurbished, confirm that the unit can still record and report data. Your doctor and insurer use this information to check your therapy compliance, and a machine that can't report data could cause problems down the line.

"This is a card-to-cloud unit. It doesn't have access to AirView modem-wise; it's not cellular, so you would bring this SD card to the doctor."

- James Curles, Sleep Coach, Sleeplay

For more on part lifespan, see our guide on when to replace CPAP supplies. If you're retiring an older machine, here's what to do with an old CPAP.

5. Is the Machine Affected by the Philips Recall?

Before buying any pre-owned Philips machine, check it against the 2021 Philips Respironics recall. The FDA classified it as a Class I recall (the most serious kind), affecting about 15 million devices worldwide [1].

What Happened

The sound-abatement foam (PE-PUR) inside certain Philips CPAP and BiPAP machines can break down over time. The degraded foam can release particles or off-gassed chemicals that could be inhaled or swallowed. According to the FDA, potential risks include airway irritation, headache, and exposure to chemicals that may be toxic or cancer-causing [2].

Which Machines Are Affected

The recall covers the Philips DreamStation, DreamStation Go, SystemOne, Dorma, and REMstar SE CPAP and BiPAP units. If you're considering any used Philips device, check the exact model and serial number on the FDA recall page before buying.

In April 2024, a federal court entered a consent decree against Philips Respironics that restricted the company from distributing new devices at several US facilities until certain remediation requirements are met [4]. The FDA's recommendations page explains what to do if you currently own an affected unit [3].

"The Respironics DreamStation Go is included in the Respironics recall. Philips Respironics has recommended for everybody to stop and discontinue use immediately of their DreamStation Go machines, so if you have one you might want to look into your provider to see what the best options are."

- Lily Perez, Registered Respiratory Therapist, Sleeplay

6. How Refurbishment and Sanitization Are Documented

A trustworthy refurbished CPAP comes with a documented process that includes inspection, replacement of consumable parts, medical-grade disinfection, performance testing, and a certificate. That paper trail is what separates refurbished from used.

Peer-reviewed research has shown that CPAP heated humidifiers can become contaminated and pass bacteria downstream to the patient [15]. This is exactly why a refurbished unit gets new consumables and medical-grade disinfection, and a private used unit is a gamble. Masks, cushions, tubing, water chambers, and filters are personal, replaceable parts, not items you reuse from a stranger.

Clinical guidelines from the American Academy of Sleep Medicine and the Mayo Clinic recommend cleaning your mask, tubing, and headgear regularly [12] [14]. When a CPAP is refurbished by a licensed retailer, every component is replaced outright.

Here's a breakdown of each refurbishment step and why it matters:

7. Do I Need a Prescription for a Refurbished CPAP?

Yes. A valid prescription is required to buy any CPAP in the US, new or refurbished, because the FDA classifies it as a Class II prescription device [5] [10] and your pressure has to be set to a number titrated for you.

CPAP therapy isn't one-size-fits-all. Your machine's pressure settings are specific to your individual needs, determined by a sleep study. The American Academy of Sleep Medicine's clinical guideline for manual PAP titration confirms that optimal pressure varies between patients [11]. Using a machine with the wrong settings can be ineffective or, in some cases, uncomfortable. That's the real reason a used machine's existing settings are wrong for you: they were set for someone else's airway.

How the Prescription Upload Works

Sleeplay and other reputable retailers have a straightforward process for handling your prescription at checkout:

• Upload a digital copy of your prescription directly at checkout.
• Have your doctor's office fax or email it to the retailer.
• Contact customer support for help getting your prescription from your physician.

Once your prescription is verified, your order ships. If a prescription isn't provided, the order can't be fulfilled.

"If a patient is having high AHIs or the minimum pressure on an auto setting is too low and they want to increase it, we will reach out to your doctor so they can send us a prescription to make those changes, and we can do them remotely."

- Lily Perez, Registered Respiratory Therapist, Sleeplay

Want to learn more? Our guide explains how to buy a CPAP without a prescription. If you need a sleep study first, start with at-home sleep apnea testing or with finding a sleep apnea doctor.

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8. Payment, Insurance, and Affordability (HSA/FSA and Medicare)

Refurbished CPAPs are eligible for HSA and FSA funds, and many retailers offer interest-free installments. Insurance and Medicare usually supply a new machine through a contracted provider instead, so confirm coverage before you buy out of pocket.

Common Payment Options

When you shop for a refurbished CPAP from a reputable online store, you'll find several ways to pay. Credit or debit cards are the most straightforward option for a one-time purchase. Many retailers also partner with services like Afterpay or Klarna to let you split your purchase into smaller, interest-free installment payments.

HSA/FSA Eligibility

CPAP machines are considered eligible medical expenses for Health Savings Accounts (HSA) and Flexible Spending Accounts (FSA). You can either pay directly with your HSA or FSA debit card at checkout or pay with a regular card and submit the receipt for reimbursement. Either way, confirm the details with your specific benefits provider before purchasing.

Insurance and Medicare

Private insurance and Medicare typically cover a new CPAP through a contracted DME provider, not a refurbished unit you buy yourself. Medicare provides a new CPAP on a 13-month capped rental basis; after that, you own the device, and it covers replacement roughly every 5 years. Because insurance and Medicare usually don't reimburse for refurbished machines purchased out of pocket, paying directly for a pre-owned unit can actually be the faster and cheaper path for many buyers.

Confirm the rules of your specific plan before making a decision.

For more on costs, see our guides on CPAP insurance vs. out-of-pocket and CPAP financing options.

9. When a Refurbished Machine Makes Sense

A refurbished CPAP makes the most sense for budget-conscious buyers, travelers who want a second compact machine, and anyone bridging a gap while insurance or a new unit is pending.

You're a Budget-Conscious Buyer

A refurbished device from a reputable seller offers significant savings, making therapy more accessible if your insurance coverage is limited or your deductible is high. Pre-owned home machines like the Luna G3 start under $300.

You Need a Backup or Travel Device

Many people with an existing primary machine buy a refurbished unit for travel or as a reliable backup. A compact, refurbished travel CPAP is a low-risk second machine to keep your primary therapy uninterrupted. Our top-rated travel CPAP guide and our AirMini vs. Transcend Micro comparison can help you narrow down your options.

You're Replacing an Out-of-Warranty Machine

If your current CPAP fails and is no longer under warranty, a refurbished machine can be a cost-effective replacement that gets you back to therapy quickly.

You're Bridging a Gap

Sometimes there are delays in getting a new machine approved by insurance or in shipping it from a provider. A refurbished device can serve as a reliable bridge to make sure you don't go without therapy.

"It's also helpful for users who want a backup CPAP machine that's easy to pack and store. However, if you rely heavily on heated humidification with a water chamber, a full-size CPAP machine may still feel more familiar at home."

- Gabriel, CPAP Expert, Sleeplay

Which Refurbished Machine Should I Buy?

Sleeplay's pre-owned lineup splits into travel machines (compact, great as a second unit) and home machines (full size with humidification). Travel is the most popular refurbished category.

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For in-depth reviews, see our Transcend Micro review, AirSense 11 review, and AirMini review.

Ready for a Pre-Owned CPAP?

A pre-owned machine from our lineup gives you a sanitized, tested device with new consumable parts and a 1-year warranty, without the wait. Browse the full pre-owned CPAP collection, and for the ResMed models, call us for pricing and current availability. Have your prescription ready and you can be set up in days.

FAQs

Where can I buy a refurbished CPAP machine online?

The safest places are specialized, reputable CPAP retailers or licensed DME providers. These sellers follow a documented refurbishment process that includes proper sanitization, replacement of consumable parts, and a warranty. Avoid general online marketplaces, where none of those safeguards are guaranteed.

Is it safe to buy a refurbished CPAP machine?

Yes, it is safe to buy a refurbished CPAP as long as you purchase it from a trustworthy source. A pre-owned device from a licensed retailer has been professionally cleaned, tested against manufacturer performance standards, and backed by a warranty. The key is buying from a retailer that documents the process and provides new consumable parts.

What's the difference between used and refurbished CPAP?

A used CPAP is sold as-is, without professional inspection or sanitization, and includes its original worn parts. A refurbished CPAP has been professionally restored and disinfected. All consumable parts including filters, tubing, and water chamber are replaced with new ones, and the machine is performance-tested and backed by a warranty.

What should I check before buying a refurbished CPAP?

Confirm that the machine comes with a warranty, a clear return policy, and brand-new replacement parts. Ask for a run-hours report and check the model and serial number against the manufacturer's recall database. A mandatory prescription step at checkout is another strong sign you are dealing with a reputable seller.

Do I still need a prescription for a refurbished CPAP?

Yes. A valid prescription is required to purchase any CPAP, whether new or refurbished. The prescription ensures the machine is set to the correct pressure for your specific needs based on your sleep study. Reputable sellers require you to upload or submit your prescription before your order can ship.

How many run hours are acceptable on a refurbished CPAP?

There is no strict industry standard for a cutoff, but lower hours generally indicate less wear on the motor. A trustworthy retailer will provide a clear report of the machine's run hours so you can make an informed decision. As a reference, 1,000 hours is roughly four months of nightly use, and 15,000 hours is more than five years.

Are refurbished CPAP machines covered by warranty?

Yes. Reputable refurbished CPAP machines come with a warranty from the retailer. Look for sellers that include at least a 1-year warranty that protects you against defects and ensures the device's quality.

Can I use HSA or FSA funds to buy a refurbished CPAP?

Yes. CPAP machines are considered eligible medical devices, and you can generally use HSA or FSA funds to purchase them. You can pay directly with your HSA or FSA card at checkout, or pay upfront and submit your receipt for reimbursement. Confirm the details with your specific benefits provider.

Is it legal to sell a used CPAP machine?

Selling a used CPAP is not banned for individuals, but it is still a prescription device, so a licensed retailer can only sell one to a buyer with a valid prescription. The bigger concern with private sales is the lack of warranty, sanitization, and recall check, not legality alone.

How many hours is too many on a used CPAP?

There is no official cutoff. At about eight hours a night, 1,000 hours is roughly four months of use, and 15,000 hours is more than five years. Use the hour meter as a wear signal and weigh it against the warranty and price rather than treating any single number as a hard limit.

How long does a CPAP machine last?

Most insurers, including Medicare, treat about five years as a CPAP's reasonable useful lifetime for replacement purposes, though a well-maintained machine can run longer. Lifespan depends on run hours and upkeep, so check the blower hours on any refurbished unit.

Who buys used CPAP machines, and what can I do with my old one?

Reputable buyers are licensed retailers that refurbish and resell with a warranty. If you are retiring a machine, donating or recycling it through a proper program is safer than selling it privately.

Are there rent-to-own or assistance options for a CPAP?

Some retailers and nonprofits offer payment plans or assistance programs, and HSA and FSA funds cover CPAP as an eligible expense. If cost is the barrier, a pre-owned machine combined with interest-free installments is usually the fastest affordable path.

References

1. U.S. FDA. Recalled Philips ventilators, BiPAP, and CPAP machines (PE-PUR foam, 15 million devices).
2. U.S. FDA. FAQs on the Philips recalls (risks of degraded foam, including toxic or cancer-causing effects).
3. U.S. FDA. Recommendations for recalled Philips machines (what to do with an affected unit).
4. U.S. FDA. Federal court consent decree against Philips Respironics (April 2024).
5. U.S. FDA. Home use devices FAQ (many medical devices require a prescription).
6. ResMed. Prescription FAQs (a prescription is required to purchase a PAP device).
7. ResMed. Product warranty (2-year, available only to the initial consumer, not transferable).
8. Philips Respironics. DreamStation CPAP user manual (US federal law restricts sale to physician order)
9. Philips Respironics. DreamStation 5-year limited warranty (not transferable; excludes masks, tubes, chambers).
10. Somnetics / Transcend. Prescription policy (FDA classifies CPAP as Class II; prescription required before shipping)
11. American Academy of Sleep Medicine. Clinical guideline for manual titration of PAP (optimal pressure varies between patients).
12. AASM Sleep Education. CPAP patient guidance (clean mask, tubing, and headgear weekly).
13. Cleveland Clinic. CPAP machine overview
14. Mayo Clinic. CPAP tips (washing your mask and face daily prevents infections and skin irritation).
15. Ortolano GA, et al., J Clin Sleep Med 2007 (PMC). CPAP heated humidifiers can become contaminated and transmit bacteria downstream.