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Respironics EverFlo Q Ultra-quiet Stationary Oxygen Concentrator

Brand/Manufacturer: RESPIRONICS

Respironics EverFlo Q Ultra-quiet Stationary Oxygen Concentrator is designed to significantly reduce the noise complaints with a sound level of 40 decibels. EverFlo Q Oxygen Concentrator is intended to provide supplemental oxygen up to 5 lpm to persons requiring oxygen therapy. EverFlo Q has just two filters providing the user to spend less time and money on regular maintenance or repair calls. External filter can be changed in minutes without special skills or tools and the internal micro disk filter is simply checked during routine maintenance procedures. Easy-to-use EverFlo Q is attractive to patients as it produces less heat and requires less electricity to operate.

EverFlo Q Ultra Oxygen Concentrator Highlights

  • Quiet, Small Oxygen Concentrator
  • Ease-of-Use In a Stationary Concentrator
  • 5 LPM Oxygen Output

EverFlo Q Oxygen Concentrators Features

  • Compact design looks less like a medical machine: Ergonomic design takes up less space and does not draw as much attention
  • Lower power consumption makes EverFlo patient-friendly: The system uses less electricity and produces less heat
  • Right Fit series focuses on patient needs: EverFlo Q is part of the Right Fit, a complete portfolio of oxygen products and programs inspired by patients and built for business
  • Low maintenance for reduced service costs: No homecare provider filter change for two years and patients do not ever have to change filters
  • Oxygen purity indicator option for increased security: EverFlo Q is available with or without OPI (Oxygen Percentage Indicator), which ultrasonically measures oxygen output as a purity indication
  • Ultra quiet operation reduces noise complaints: EverFlo Q has only a 40 decibel sound level, which significantly increases patient satisfaction and is attractive to both physicians and patients
  • Humidifier Bottle Platform for extra flexibility: The platform is designed to be compatible with all bottle styles and features an easy-to-use Velcro closure
  • Lightweight for easy transport: EverFlo Q weighs in at only 31 pounds, reducing shipping and storage costs and risk of injury
  • EverFlo is significantly lighter, quieter, and more energy efficient than its predecessor: These improvements include reductions of weight (40%), energy usage (24%), and packaging (15%)
  • EverFlo is compact, has a streamlined and integrated handle
  • Recessed flow meter reduces accidental breakage
  • Durable metal cannula is less likely to break
  • Internal tubing storage keeps tubing conveniently available for use
  • Interface panel with on/off switch and alarm indicators
  • Eight-hour battery life with 1050 ml/min oxygen capacity
  • FAA approved for air travel and in-flight use

Everflo User Manual

Parts of EverFlo Q:

Parts of EverFlo Q:

Alarm and Indicators:

Alarm and Indicators:

What to buy with Q Ultra Oxygen Concentrator?

How To Operate EverFlo Q Ultra Compressor?

Operating Instructions:

  1. Select a location that allows the Respironics Concentrator to draw in room air without being restricted. Make sure that the device is at least 15 to 30 cm away from walls, furniture, and especially curtains that could impede adequate airflow to the device. Do not place the device near any heat source.
  2. After reading instructions, plug the power cord into an electrical outlet.
  3. Do either Step A or Step B below:
    A. If you are not using a humidifier, connect your nasal cannula to the Oxygen Outlet Port, as shown below.
    Operating Instructions
    B. If you are using a humidifier, follow the steps below:
    1. Open the filter door on the back of the device
      Operating Instructions
    2. Remove the humidifier connector tube from the back of the filter door and replace the filter door.
    3. Fill your humidifier bottle according to the manufacturer instructions.
    4. Mount the filled humidifier on the top of the EverFlo Q device inside the velcro strap.
      Operating Instructions
    5. Tighten the velcro strap around the bottle and secure it so it is held firmly in place.
    6. Connect the humidifier connector tube (that you retrieved from the filter door)to the Oxygen Outlet Port.
    7. Connect the other end of the humidifier connector tube to the top of the humidifier with the elbow in the tubing facing the front.
      Operating Instructions
    8. Connect your cannula to the humidifier bottle according to the humidifier bottle manufacturer specifications.
  4. Press the power switch to the On [I] position. Initially, all the LEDs will illuminate and the audible alert will beep for a few seconds. After that time, only the green LED should remain lit. You can began breathing from the device immediately even though it typically takes 10 minutes to reach oxygen purity specifications.
    Operating Instructions
  5. Adjust the flow to the prescribed setting by turning the knob on the top of the flow meter until the ball is centered on the line marking the specific flow rate.
  6. Be sure oxygen is flowing through the cannula.
  7. Put on the cannula as directed by your home care provider.
  8. When you are not using the oxygen concentrator, press the power switch to the Off [O] position.

How To Clean Oxygen Concentrator?
  • Periodically, use a damp cloth to wipe down the exterior case of the Stationary EverFlo Q device.
  • If you use medical disinfectants, be sure to follow the manufacturer instructions.
  • It is important to unplug the device before you perform any cleaning.
  • Excess moisture may impair the proper operation of the device.

Q Ultra Everflo Specifications



Sound Level

40dBA typical

Input Voltage

120 VAC +/- 10%

Input Frequency


Average Power Consumption

350 watts

Oxygen Concentration (at 5lpm)

93% (+/- 3%)

Liter Flow

0.5 to 5 liters per minute


31lb (14kg)


23"H x 15"W x 9.5"D (584mm x 381mm x 241mm)

OPI (Oxygen Percentage Indicator) Alarm Levels

Low oxygen: 82%, very low oxygen: 70%

Operating Temperature

55°F to 90°F (12°C to 32°C)

Storage/Transport Humidity

-30°F to 160°F (-34°C to 71°C) up to 95% relative humidity

Operating Humidity

Up to 95% relative humidity

Outlet Pressure


Operating Altitude

0 to 7,500 ft (0m to 2,286m)

Respironics Q Ultra Warranty

3 year limited warranty, with 2 years extended warranty

Respironics Oxygen Concentrator Reviews


ItemName - now     10/27/2021

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UserName - now     10/27/2021

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Barb     06/27/2017

Maximum tubing length?


Customer Care    07/04/2017

50 Feet of tubing can be used with the Respironics EverFlo Q for Maximum Mobility.



Darrell Hunter     03/26/2017

do I need a prescription to purchase this.


Customer Care    03/27/2017

Yes, you require prescription to purchase Respironics EverFlo Q Ultra-quiet Stationary Oxygen Concentrator.



peggy     03/09/2017

does this machine need to be serviced at anytime?


Customer Care    03/10/2017

Respironics EverFlo Q Ultra-quiet Stationary Oxygen Concentrator needs some maintenance.

Please refer attached Brochure.



Fred     01/10/2017

Would this concentrator be covered under Medicare?


Customer Care    01/11/2017

Unfortunately we do not deal directly with insurance companies. Our customers will purchase products then submit the paid invoice to their insurance company for reimbursement. We strongly advise checking with your insurance company first to make sure they will reimburse your purchase. 

I hope this answers your question.



ron     12/12/2016

electice cost per month running 24/7


Customer Care    12/14/2016

Respironics EverFlo Q Ultra-quiet Stationary Oxygen Concentrator Average Power Consumption is 350 watts.



millie     09/18/2016

It says "2 year extended warranty with Compressor".  Can you clarify? I thought I read it comes with 3 year warranty which could be extended to 5 years.


Customer Care    09/19/2016

Thank you for contacting customer care service.

Yes, it comes with 3 year limited warranty, with 2 years extended warranty which becomes 5 year. 
Warranty applies to primary item. Accessory and parts warranties may vary.



Nyla     05/11/2016

What is the required maintenance? None listed on specifications.


Customer Care    05/12/2016

The attached Product Brochure may help you.



Jerry     04/11/2016

What is the correct level


Customer Care    04/12/2016

Thank you for reaching out to us. The Sound Level of this unit is up to 40dBA.



natalia     05/27/2015

Are these use or refurbished items?


Customer Care    05/28/2015

We only sell brand new, unused items.



Pat Alvey     11/03/2014

My mothers oxygen concentrator makes a high pitch noise...what could be causing this?


Customer Care    11/06/2014

Thanks for contacting us. The most likely cause is a malfunctioning solenoid valve. However, without evaluating the equipment physically, it is difficult to give an exact cause. If the equipment is still under warranty, it would be advisable to send the equipment in for service. Should you choose to send the equipment for repair, manufacturer address is below. Equipment should be packed in its original shipping container. Medequip Services 197 Main St. #107 North Reading, MA 01864 781-632-9561


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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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