• Prescription required
  • Made in USA
This product is on backorder and will be available to purchase once it is back in stock.

Devilbiss Ultra Quiet Five Liter Compact Oxygen Concentrator

Brand/Manufacturer: DEVILBISS

Devilbiss Ultra Quiet Five Liter Compact Oxygen Concentrator is designed with enhanced quality, durability, performance and simplicity in mind. This robust oxygen concentrator offers just the right balance of cool and quiet. The simplified, two-piece cabinet design provides 15% typical sound quality improvement and an improved cooling process. Coupled with proven, patented DeVilbiss Turn-Down Technology, it minimizes wear on internal components and increases the life expectancy of the unit. The concentrator is easy to assemble and disassemble and requires no maintenance for two years.

Devilbiss Oxygen Concentrator Highlights

  • Proprietary sieve mixture, fill process and assembly 
  • Proven rotary valve design 
  • Exceptional compressor durability

Devilbiss Five Liter Oxygen Concentrator Features

  • Exclusive DeVilbiss OSD (Oxygen Sensing Device)increases accuracy and reliability for longer service intervals
  • Readily accessible patient controls and protected cannula fitting
  • Noticeably quiet operation
  • Easy to assemble and disassemble two-piece cabinet for ease of maintenance
  • Convenient top and side handles for easy transport
  • Recessed humidifier nook prevents damage
  • Lockable flow meter
  • Accommodates up to a 50-foot cannula (15.3 meters)
  • Interfaces with DeVilbiss Smart Track Concentrator Management System that:
    •  Inputs patient data and downloads critical equipment information
    •  Performs in-depth concentrator check
  • Robust design for improved durability:
    •  Proven rotary valve design
    •  Proprietary sieve mixture, fill process, and assembly
    •  Unit tested in high temperature and high humidity for extended periods of time
    •  Exceptional compressor durability
  • Intake filter features a translucent back to quickly determine if the filter is dirty
  • Upgraded base design, which includes: New material, which is more resistant to chemical & environmental degradation Increased wall thickness to reduce the risk of physical damage (cracking, etc.) to the base and casters New caster design, which includes longer connecting stems, improved fit and durability.
  • Longer/larger sieve beds, which improve overall sieve bed performance and increase the bed useful life
  • Upgraded compressor cup seal material with greater heat resistance, which extends life of compressor cup seals, improving overall compressor performance
  • Use of brass screw inserts and machine screws at all cabinet connection points, which improves the overall stability and durability of concentrator shell
  • Reduced internal operating temperature (through various component and system updates), which extends product life by reducing wear on key internal components
  • Made in the USA and imported parts
  • Click Here for Instruction Guide
  • Click Here for Service and Maintenance Log 

  • Important Parts:

    Devilbiss Ultra Quiet Five Liter Compact Oxygen Concentrator1. Operating instructions
    2. Green Power light
    3. Power switch
    4. Flow meter knob
    5. Flow meter
    6. Circuit breaker
    7. Oxygen outlet
    8. Normal Oxygen (green) light
    9. Low Oxygen (yellow) light
    10. Red Service Required light
    11. Handgrip
    12. Exhaust
    13. Power cord and/or IEC power connector
    14. Line cord strap
    15. Air filter

    Intended Use:

    DeVilbiss 5 Liter Oxygen Concentrator is used to provide supplemental low flow oxygen therapy for those patients who are suffering from cardiovascular disease, COPD and lung disorders. It is used in home type environments, homes, patient care facilities, nursing homes, etc.

What To Buy With Oxygen Concentrator?

How To Operate Devilbiss 5 Liter Oxygen Concentrator?

Patented DeVilbiss Turn-Down Technology:

  • Automatically turns down its flow cycle below 2-1/2 lpm, resulting in a 35% reduction in system pressure to reduce stress on compressor bearings and internal fittings
  • Energy-efficient design reduces power consumption by 15% or more compared with competitive designs to save patients an average of $100 in electricity costs annually
  • Minimizes wear on internal components thereby extending the life of concentrator

Operating Your DeVilbiss Oxygen Concentrator:
  1. Press the power switch to the “On” position. When the unit is turned “On,” all four lights (Power, Service Required, Low Oxygen, and Normal Oxygen) on the front panel will illuminate briefly and audible signal will briefly alarm. After a few seconds, only the Power and Normal Oxygen lights will remain lit.
  2. Check the flow meter to make sure that the flow meter ball is centered on the line next to the prescribed number of your flow rate. If the flow meter knob is turned clockwise, the flow decreases (and eventually will shut off the oxygen flow). If the knob is turned counterclockwise, the flow increases.
  3. DeVilbiss concentrator is now ready for use, properly position the cannula or mask. Allow 20 minutes for oxygen concentrator to reach stated performance.

Safety Features:
  • Alarms do not require a battery - reducing service and maintenance. Alarms indicate:
    • Power failure (capacitor powered)
    • High/low pressure
    • Low oxygen
    • Service required
  • Pressure-compensated flow meter to ensure accurate flow display
  • Pressure-relief valve and thermal protection on the compressor
  • Flame-retardant cabinet
  • Double insulated unit; two-prong plug

Cleaning And Disinfecting:
  1. Dispose of all accessory components that are not suitable for reuse, i.e., particularly the oxygen tubing, the nasal cannula/mask, oxygen outlet connector and humidifier bottle.
  2. Concentrator must be disconnected from the power supply for this step. Open the concentrator and remove all dust deposits inside the cabinet with an appropriate vacuum cleaner.
  3. Clean and disinfect all parts of the cabinet inside and outside and the power cord with a suitable disinfecting agent, e.g., Aldahol, Cidex OPA or Peract.
  4. Check the cord, the plug on the back of the device, the power switch, the fuse holder and the indicator light for possible damage.
  5. Replace all damaged or worn components.
  6. Replace the cabinet air filter on the back of the device.
  7. Check the oxygen concentration. If the device is within specifications, the extended life intake bacteria filter does not need to be replaced between patients.

New Filter Doors

  • All 525/1025 series concentrators produced on/after this date will no longer require the use of the gross particle filter and ships with the new filter door. However, the new door design can accommodate a gross particle filter. The filter door has been designed to capture gross particles without the filter, while increasing the air flow into the concentrator. This design change does not adversely alter the performance or useful life of the intake HEPA filter or other internal components. 
  • The new filter door will be backwards compatible with older 525/1025 models & the old filter door will be forward compatible with the new 525/1025 models. 
  • The part number for the filter door will remain the same: 525DD-639. The new filter door will be dropped in as part of the running change for stationary concentrators, as any remaining stock of the old filter door sells out.

  • Warnings:
    • For your safety, the oxygen concentrator must be used according to the prescription determined by your physician
    • Equipment not suitable for use in the presence of a flammable anesthetic mixture with air or with oxygen or nitrous oxide
    • This device contains electrical and/or electronic equipment
    • Follow local governing ordinances and recycling plans regarding disposal of device components
    • Installation of 515LF-607 low output flow meter package will cause the low flow alarm to not work

    Devilbiss Ultra Specifictions



    Outlet Pressure

    8.5 PSIG (58.6 KPa)

    Oxygen Purity

    93% at 1 to 5 lpm (+/- 3%)

    Power Consumption

    310 Watts average
    (275 Watts @ 2.5lpm and below)

    Product Dimensions

    24.5”H x 13.5”W x 12”D
    (62.2cm x 34.2cm x 30.4cm)

    Product Weight

    36lbs (16.3kg)


    Audible and visual High/low pressure, low flow, low oxygen, power fail, Oxygen Sensing Device

    Sound Level

    48 dbA

    Pressure Relief Valve

    40 psig±5psig (276 kPa±34.5 kPa)

    Electrical Rating

    115V, 60Hz, 3.3amp

    Storage Conditions

    -40°C to 70°C, humidity range of 10% to 100%, including condensation

    Delivery Rate (Lower delivery rates available for low flow applications)

    0.5lpm to 5lpm

    Maximum Recommended Flow (nominal outlet pressures of zero and 7kPa)


    Operating Voltage Range

    97-127V, 60Hz

    Oxygen Percentage

    1-5 lpm=93%±3%

    Oxygen Concentrator Warranty

    3 Year Warranty

    Customer Reviews


    ItemName - now     03/01/2021

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    UserName - now     03/01/2021

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    Joseph Saxman     09/15/2019

    Where do you purchase a flow meter to check the output flow?


    Customer Care    10/28/2020

    Devilbiss Ultra Quiet Five Liter Compact Oxygen Concentrator already comes with Lockable flow meter.



    John     03/25/2017

    My unit does not operate. Power light is off when the power switch is “On.” Audible alert is pulsing and Service Required light is flashing. What should I do?


    Customer Care    03/27/2017

    You can try one of the following: 

    1. Check power cord connection at the wall outlet. On 230 volt units, also check the mains connection on the back of the unit. 
    2. Check your home circuit breaker and reset if necessary. Use a different wall outlet if the situation occurs again. 
     3. Press the concentrator circuit breaker reset button located below the power switch. Use a different wall outlet if the situation occurs again.



    Liam     03/25/2017

    Where should I set up the concentrator?


    Customer Care    03/27/2017

    To set up your Devilbiss Ultra Quiet 5 Liter Oxygen Concentrator: 

    1. Position your unit near an electrical outlet in the room where you spend most of your time. 
    2. Position your unit at least 6 inches (16 cm) from walls, draperies, or any other objects that might prevent the proper flow of air in and out of your oxygen concentrator. The oxygen concentrator should be located so as to avoid pollutants or fumes.



    Gipsy     03/25/2017

    How should I clean the air filter?


    Customer Care    03/27/2017

    The air filter and connector should be cleaned at least once a week. To clean, follow these steps: 

    1. Remove the air filter, located on the back of the unit. Remove the oxygen outlet connector (if used). 
    2. Wash in a solution of warm water and dishwashing detergent 
    3. Rinse thoroughly with warm tap water and towel dry. The filter should be completely dry before reinstalling.



    Mayra     03/25/2017

    What is Devilbiss OSD?


    Customer Care    03/27/2017

    The OSD (Oxygen Sensing Device) is a device within Devilbiss Ultra Quiet 5 Liter Oxygen Concentrator that monitors the oxygen produced by the unit. When the unit is turned “On,” all four lights (Power, Service Required, Low Oxygen, and Normal Oxygen) on the front panel will illuminate briefly. After a few seconds, only the Power and Normal Oxygen lights will remain lit. The OSD lights on the front panel are defined as follows: 

    • Green Normal Oxygen light–acceptable oxygen level. 
    • Yellow Low Oxygen light– below an acceptable oxygen level. 
    If the oxygen purity falls below the acceptable level, the green Normal Oxygen light will shut off and the yellow Low Oxygen light will illuminate.


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    What is HPFY’s return policy?

    Customer satisfaction is our top priority. We stand behind our products. If the merchandise you received is defective or not what you expected it to be, and you wish to return the item, please submit a return request in the My Account section of our website, contact our Customer Service department at (866) 316-0162 / (203) 616-2850 or email us.

    1. Merchandise must be returned within 30 days of the receipt of your order. Returns are not accepted after 30 days.
    2. Items (including parts and accessories) must be returned in new, unused, and resalable condition in its original packaging.
    3. Before returning any product, the buyer must obtain a Return Authorization Number (RA#) from a customer service representative. With your RA# you will receive a prepaid return shipping label.
    4. Orders returned without obtaining an RA# will be entitled to receive only "In-Store Credit" that can be used towards future purchases.
    5. Return orders are subject to a 20% restocking fees.
    6. All custom orders and hygienic items are non-returnable. Refer to the “Non-Returnable Items” section for further details.
    7. Returns will be reviewed and inspected before issuing credit. Please allow 3 to 4 weeks for processing. The credit will be applied to your original method of payment.
    8. If the return is the result of a defective product or shipping error, we will refund the entire purchase amount and return shipping costs.

    Which products are Non-Returnable?

    Due to the hygienic nature of some items, they are non-returnable. The items listed below are non-returnable:

    1. All hygienic items.
    2. Opened personal care items.
    3. Anything opened, used, or tried on.
    4. All customized items.
    5. Besides these, items that have the “non-returnable” phrase on the website.

    We reserve the right to make adjustments due to errors, changing market conditions, product discontinuation or typographical errors in advertisements. Images on the site may not always reflect the actual product. Footrests or leg-rests are not included with wheelchairs unless specified.

    How do I receive a return authorization number?

    You can submit a return request by logging into your account. You will receive the Return Authorization Number (RA#) details in the email within 2-3 business days.

    • Login to your account
    • Go to “order history”
    • Click on “return order”
    • Fill out the return form and Submit it

    If you do not have an email address, we will make other accommodations for RA# Details. Write the RA# on your label affixed to your package prior to shipment.

    How long does it take to receive a refund?

    Please allow 3 to 4 weeks to process the returns. Once the item is received, and inspected, your refund will be processed and automatically applied to your credit card or original method of payment.

    Is there any Restocking Fees?

    1. 20% restocking fees will be applied.
    2. Outbound shipping cost is non-refundable.
    3. For orders that qualified for free shipping, $8.99 will be deducted from the refund if the product is returned.

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