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Description
McKesson 5-Liter Compact Concentrator with Oxygen Sensing Device< The McKesson 5 Liter Compact Concentrator with Oxygen Sensing Device (146 525DS) is a reliable, compact 5 LPM home oxygen concentrator built on the proven DeVilbiss 525DS platform 34% more compact than traditional 5 liter concentrators, making it noticeably easier to position in smaller rooms, beside a bed, or anywhere space is limited. At 36 lbs with smooth rolling casters and top and side handles, it moves easily between rooms for patients who use
<The McKesson 5-Liter Compact Concentrator with Oxygen Sensing Device (146-525DS) is a reliable, compact 5 LPM home oxygen concentrator built on the proven DeVilbiss 525DS platform — 34% more compact than traditional 5-liter concentrators, making it noticeably easier to position in smaller rooms, beside a bed, or anywhere space is limited. At 36 lbs with smooth-rolling casters and top and side handles, it moves easily between rooms for patients who use oxygen throughout the day.
The 146-525DS includes an exclusive Oxygen Sensing Device (OSD) as standard — continuously monitoring oxygen purity output to ensure reliable, accurate delivery and alerting the user if levels fall outside safe parameters. Turn-Down Technology automatically reduces system pressure at lower flow settings, cutting stress on compressor bearings and internal fittings by up to 35% and reducing power consumption — extending component life and lowering electricity costs over time. The recessed humidifier nook protects connections from accidental damage. Operates at 48 dBA for quiet home use. HCPCS code E1390.
5 LPM continuous flow · 36 lbs · 48 dBA · 87%–96% O2 · OSD oxygen sensing · Turn-Down Technology · Compact design · HCPCS E1390 · Flame-retardant cabinet. Prescription required before shipment.
Prescription Required
A valid prescription from a licensed physician or respiratory therapist is required before this item can be shipped. Flow rate settings must be configured according to your physician's instructions. If you need assistance obtaining or submitting your prescription, call us at 866-218-0902 — we are happy to help coordinate with your provider. Mon–Fri 9AM–5PM · Sat 9AM–3PM.
Questions about the McKesson 5-Liter Concentrator?
Call 866-218-0902
— Mon–Fri 9AM–5PM · Sat 9AM–3PM · Nationwide Shipping · Local SW Florida Support
34% More Compact. OSD Standard. Turn-Down Technology.
34% More Compact · 36 lbs · Recessed Humidifier Nook
The McKesson 146-525DS is 34% more compact than traditional 5-liter oxygen concentrators — a meaningful difference in smaller bedrooms, living spaces, and care environments where floor space is at a premium. At 36 lbs with smooth-rolling casters and top and side handles, it is easy to reposition between rooms throughout the day. The recessed humidifier nook is designed to protect the humidifier connection and tubing from accidental contact or damage during daily use. The flame-retardant cabinet meets safety standards for home medical equipment.
OSD Oxygen Sensing · Continuous Purity Monitoring · 87%–96% O2
The exclusive Oxygen Sensing Device (OSD) is built into every 146-525DS unit and continuously monitors the purity of the oxygen being delivered. If output drops below safe levels, the OSD triggers a visual and audible alert — providing an important layer of safety for patients using the concentrator for extended daily therapy. The unit delivers 87% to 96% oxygen concentration across its full 0.5 to 5 LPM flow range, with a lockable flow meter to prevent accidental adjustment.
Turn-Down Technology · Lower Power · Extended Component Life
Turn-Down Technology automatically reduces system pressure when operating at lower flow settings — cutting stress on compressor bearings and internal fittings by up to 35% at 2.5 LPM and below. This reduces wear on key components, extends the operational life of the concentrator, and lowers power consumption compared to units without this feature. For patients running the concentrator continuously at lower prescribed flow rates, Turn-Down Technology can meaningfully reduce electricity costs over time.
Full Specifications
| Model | McKesson 146-525DS |
| Flow Rate | 0.5 to 5.0 LPM continuous flow |
| Oxygen Concentration | 87% to 96% |
| Oxygen Sensing | OSD — continuous purity monitoring standard |
| Noise Level | 48 dBA |
| Weight | 36 lbs |
| Dimensions | 24.5"H x 13.5"W x 12"D |
| Compact Design | 34% smaller than traditional 5-liter units |
| Technology | Turn-Down Technology — reduces system pressure at lower flow settings |
| Humidifier | Recessed humidifier nook |
| Cabinet | Flame-retardant |
| Plug Type | 2-prong |
| Pressure Relief Valve | Yes |
| HCPCS Code | E1390 |
| Latex Free | Yes — not made with natural rubber latex |
| Warranty | Limited warranty |
| Prescription Required | Yes — required before shipment |
Compare All Home Oxygen Concentrators
Not sure if the McKesson 5-Liter is the right model for your prescription? Compare all home oxygen concentrators we carry — 5 LPM and 10 LPM models. Browse All Home Oxygen Concentrators →
Frequently Asked Questions
The McKesson 146-525DS is built on the proven DeVilbiss 525DS platform — one of the best-selling home oxygen concentrators in the category, assembled in the USA and well established in both home and clinical settings. The McKesson version adds the OSD oxygen sensing device as standard and carries the McKesson product number for facilities and providers who order through McKesson's distribution network. Call us with any questions. 866-218-0902.
HCPCS code E1390 is the billing code used for stationary oxygen concentrators under Medicare and other insurance programs. Having this code on the product does not guarantee coverage — reimbursement depends on your specific plan, your physician's prescription, and your qualifying medical condition. Contact your insurance provider or physician to determine whether this product qualifies for coverage under your plan.
The Oxygen Sensing Device (OSD) is a built-in monitor that continuously measures the purity of the oxygen being produced by the concentrator. If the output oxygen concentration drops below a safe threshold, the OSD activates both a visual indicator light and an audible alarm to alert the user and caregiver. This provides ongoing reassurance that the unit is delivering oxygen at the prescribed concentration throughout daily use.
The McKesson 146-525DS is a stationary home concentrator that requires a standard AC wall outlet to operate. It is not designed for travel or use away from a power source. If you need oxygen therapy when away from home, a portable oxygen concentrator is the appropriate solution. Browse our portable oxygen concentrators →
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Need Oxygen Away From Home Too?
The McKesson 5-Liter is designed for stationary home use and requires a wall outlet. If you also need oxygen therapy during errands, appointments, or travel, a portable oxygen concentrator is the right complement. We carry a full range of battery-powered portable concentrators — including FAA-approved models for air travel.
Browse Portable Oxygen Concentrators →
Nationwide Shipping & Local SW Florida Support
Medical Department Store ships home oxygen concentrators nationwide to residential addresses and healthcare facilities across all 50 states. Local in-person support is available at all five of our Southwest Florida locations — Venice, Sarasota, Port Charlotte, Fort Myers, and Naples. Our respiratory specialists are available before and after purchase to answer questions, assist with prescription submission, and help you get the most from your equipment.
📞 866-218-0902 · Mon–Fri 9AM–5PM · Sat 9AM–3PM · Find your nearest location →
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 28 reviews
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Product Reviews
★★★★★ 4
Arthurian Fae Quest…say less.
Format: Kindle
A fae centered Arthurian tale unlike any I’ve read so far. The author did a great job at descriptive world building, with scenes easily playing out in my minds eye. There was plenty of action, suspense, and even a touch of horror. An enemies to lovers, slow burn romance, a quest, with plot twist and turns aplenty. There was a love triangle, which I’m not usually a fan of but, it played out well in this story line. The FMC, Morgan Pendragon, was so blatantly naïve, yet I typically expect as much in a ‘book one’ of a series, especially one that features a fairly sheltered princess. I was happy to read that in spite of this, she still showed a strong sense of morals, fire, and spine. Now our MMC? Kairos Draven, aka Void’s Edge. Oh, how I’m a sucker for a smoking’ hot grumpy warrior alpha with a witty mouth, and a strong sense of “touch her and die” attitude, so you know who held all my cards. That ending? Just made me swoon all the harder. Now add a battlecat that rivals the size of a horse…and well Ms. Briar Boleyn you have well and truly stolen my heart. I’m excited to see where the story goes from here, and follow along to see more of the characters growth. I went into this story fairly blind, and I think I enjoyed it all the more because of it.
Once the story got going, it had me in an absolute chokehold and it was difficult to put down.
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Reviewed in the United States on May 12, 2024
★★★★★ 3
Not a bad start
Format: Kindle
3 stars
Thank you Netgalley and Briar Boleyn for the ARC!
A camelot/king Arthur retelling with fae. I was hooked by the idea of this book immediately and was eager to jump into this world.
• slow burn
• enemies to lovers
• who did this to you
Morgan Pendragon watched her mother die by her father's hand when she was just eight years old, hiding under the bed. Morgan is believed to have the tainted blood of the fae in her veins and is cast aside so that her fathers illegitimate son, Arthur, can become the king. She's seen his cruel treatment of the fae firsthand, so when he sends her on a journey to find a fae weapon she seizes the opportunity to do more with her life. Along the way, she finds more than she could have imagined.
I don't know a whole lot about King Arthur and Camelot but I had a lot of fun with this story! The plot has some similar tropes to popular romantasy books (From blood and ash) but there's enough originality here that it doesn't feel like I'm reading a copy. I liked how the fae were different in appearance than what is typical in most fantasy books I've read. In this book they have blue hair, violet skin and a wide range of other characteristics. I thought that the world building was easy to follow and I could easily immerse myself into this world. After reading the blurb I kept wondering when she was going to go on the journey to find Excalibur and it doesn't happen until around the 45% mark.
The story is a bit slow at times but starts to pick up once they begin their journey to find Excalibur. The John Wick style Inn was a fun concept that I enjoyed reading about.
There are a lot of similarities to this and FBAA and I would have liked to have it be a little more different, but I'm hoping book two will have the story turn into something of its own. Overall I enjoyed reading this story and I'm looking forward to reading book two especially after that ending.
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Reviewed in the United States on May 27, 2023
★★★★★ 5
Unraveling Fate and Fae: A Captivating Journey in "Queen of Roses"
Format: Kindle
"Queen of Roses" by Briar Boleyn is a dark fantasy romance that masterfully combines elements of myth, magic, and romance with a captivating King Arthur retelling infused with a Fae twist. From its intricately woven plot to its compelling characters, this novel delivers an immersive reading experience that will leave readers eagerly anticipating the next installment.
At its core, "Queen of Roses" is an enchanting tale of forbidden love and destiny, featuring an exceptionally slow-burn romance that ignites with the intensity of an enemies-to-lovers trope. Against a backdrop of magic and mythical creatures, the story unfolds with tension, banter, and forced proximity, drawing readers into a world filled with love, friendships, self-discovery, and betrayal.
While the novel excels in world-building, character development, and plot intricacies, some readers may yearn for a bit more fire and spice in certain aspects of the narrative. However, the promise of future developments in the series offers hope for an even more dynamic and engaging story to come. I know I personally cannot wait to get into book 2.
With a cliffhanger ending that leaves hearts racing and minds reeling, "Queen of Roses" succeeds in immersing readers from start to finish. Its dark and twisted fantasy elements are expertly balanced with moments of adventure, action, and unexpected twists, keeping readers on the edge of their seats until the very last page.
As the story delves into complex themes and explores the depths of its characters' struggles and desires, it's important to note that "Queen of Roses" may contain triggering content. Readers are advised to check the trigger warnings before diving into this captivating tale.
Overall, "Queen of Roses" is a must-read for fans of dark fantasy romance, offering a mesmerizing journey that will leave readers eagerly anticipating the next chapter in the series. With its lush prose, intricate storytelling, and unforgettable characters, this novel is sure to leave a lasting impression on all who venture into its enchanted world.
I want to extend a heartfelt shoutout to the author for granting me the opportunity to dive into "Queen of Roses" through NetGalley. It has been an absolute pleasure to explore the captivating world and characters crafted with such skill and imagination. Thank you for entrusting me with this glimpse into your enchanting world.
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Reviewed in the United States on April 1, 2024
★★★★★ 4
Right from the start, I was drawn in by the prologue!!!
Format: Paperback, Format: Paperback
Queen of Roses (Blood of a Fae #1) by Briar Boleyn
Genre General Fiction ( Adult), Romance, Sci-Fi & Fantasy, Dark Romance
“More primordial than the stars. My name was on his lips as he promised unspeakable darkness to any who came between us.”
Right from the start, I was drawn in by the prologue!!!
I’m a big fan of “touch her, and you die” vibes, but I mean, what’s also not to love about a unique Arthurian retelling with gender twists, a treacherous royal court, a dangerous quest, magical Fae & mystical monsters, entwined with a bit of spice!
Morgan, Princess of Pendrath and true heir to the throne has spent most of her life dimming her light to feel safe and to make others comfortable. She is treated as an outcast in the court and repressed by her family due to the blood of the Fae within her and forced to join the Temple of the Three as a priestess in training to one day replace Merlin.
Her brother, King Arthur, who reminds me of Joffrey from Game of Thrones, later tells her that he has other plans and offers her a choice of the Temple or to marry her off for political gain, unless… that is, she can journey through the great unknown and return with a long-lost fae weapon with enchanted powers known as Excalibur.
Her quest begins with a roguish crew that includes the mysterious, arrogant, and heart-tuggingly handsome Captain of the Royal Guard, Kairos Draven, whom she can’t decide if she wants to stab or indulge in pleasure with.
Along the way are plenty of surprises, mystical creatures, and betrayal, all while Morgan uncovers more of the truth about herself and who she can trust.
This book had intriguing storylines and lovable characters that kept me turning pages and wanting more. I can’t wait to see how it all unfolds and comes together in book 2, Court of Claws, which I just started reading!!
Read if you’re into-
Dark Fantasy/Romance
Slow–Burn
Question Everything
Magic and Action
Fae
Arthurian Legend
Stabby/Broken FFC
Morally Gray MMC
Forced Proximity
Queen of Roses is perfect for Holly Black, Jennifer L. Armentrout, and Sarah J. Maas fans.
Please check the trigger warnings page in the table of contents before reading this book.
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Reviewed in the United States on August 16, 2023
★★★★★ 3
3.5 stars, A little boring to say the least.
Format: Kindle
Wow so I'm not sure where to begin on this one. This was a very different take on the legend of Arthur and Excalibur. This is told from the point of view of Morgan the sister of Arthur. Honestly the first 50% of this book is world building and character building which unfortunately was super boring for me. Morgan to me was a female MC that had a hard time in believing in herself. Sometimes taking too long to understand exactly what was going on around her. Draven was also a different male MC, like I couldn't put my finger on him and what he was all about. It was not until the last 10% of the book did we get some answers on the mystery that is Draven. The other 50% of the book centered around this big journey with everyone having a different motive. We see a spark of magic around this time that had me excited but then we never expanded upon that and what it could mean for the female MC. I feel like I want to read the second book just to see where this goes, but the spice was probably a 2 out of 5. Side characters are ok, Lancelet was fun but I almost felt like I wanted more.
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Reviewed in the United States on September 13, 2023