Philips Respironics Certified Pre-Owned Respironics EverFlo Oxygen Concentrator

Philips Respironics Certified Pre-Owned Respironics EverFlo Oxygen Concentrator - CPAPnation
Philips Respironics Certified Pre-Owned Respironics EverFlo Oxygen Concentrator - CPAPnation

Philips Respironics Certified Pre-Owned Respironics EverFlo Oxygen Concentrator

Regular price $1,435.00 Sale price $499.00 Save $936
Shipping calculated at checkout.
  • Free shipping on orders $49+
  • Loyalty Points
  • In stock, ready to ship
  • Inventory on the way

If you’re on a budget, you can opt for a certified pre-owned Respironics Everflo oxygen concenter. With a refurbished Everflo oxygen concentrator, you still reap the benefits of this ultra-quiet, compact piece of equipment for half the price. It’s the perfect solution for your treatment, as it remains one of the quietest devices on the market. Forego the bulky, ear-shattering versions of oxygen concentrators from years past, and make the wise decision of using a certified pre-owned Respironics Everflo oxygen concentrator. This refurbished machine is low-maintenance and easy to transport, making it a popular option.

  • Convenience: The Everflo is only 31 pounds and rolls around easily on extremely smooth, durable wheels. Plus, there are multiple storage systems like the velcro holding strap for your bubble humidifier and an internal cabinet to store extra tubing. 

  • Durability: The Everflo panel has a simple on/off switch and rotating Flow Meter Knob for easy control. The Flow Meter is recessed and has a metal cannula connector making it much less prone to accidents and repairs. 

  • Power & Cost Savings: The Everflo was exclusively made to reduce oxygen therapy costs. Its advanced motor provides up to 5 liters/minute of Continuous Flow Oxygen all while using less electricity and less heat than competitor models.

Purchase Includes:

Certified Pre-Owned EverFlo Stationary Continuous Flow Oxygen Machine (SKU: NN1020000) 

  • (1) *Refurbished EverFlo Stationary Oxygen Machine 
  • (1) Filter
  • (1) Humidifier Connector Tubing
  • (1) User Manual

Specs & Manuals:

  • EverFloUser Manual (English)
  • Weight: 31 pounds 
  • Dimensions: 23.0 x 15.0 x 9.5 inches
  • Power Cord Length: 9 Feet 10 Inches
  • Operating Continuous Pressure Range: 0.5 to 5 LPM
  • Operating Altitude: Up to 7,500 Feet
  • Max Operating Oxygen Output: 90-96%
  • Sound Level: 40 dBA

Important Notes & Precautions:

If you use a CPAP device: 

  • It is possible to port your oxygen tubing into your CPAP mask and get the benefit of both therapies while you sleep. Many masks were designed to allow both therapies; however, if your mask does not have a port, you may need to connect your oxygen tubing to your CPAP tubing with an Oxygen Enrichment Adapter instead. The Oxygen Enrichment Adapter allows you to feed oxygen into your CPAP tubing using a special adapter to connect your oxygen tubing, allowing you to receive the benefits of both therapies.

  • You should turn the Everflo ON after the CPAP machine is already running. (Do not start the Everflo and then start the CPAP; the CPAP should always start first).


  • There are other precautions you need to follow when using oxygen. For instance, you should not smoke around an oxygen supply device, and you should also keep your device away from heat. Please refer to the user manual for important instructions.

  • At this time, we cannot ship oxygen products to the following states: Idaho, Maine, Tennessee, Louisiana, Hawaii, and Rhode Island.
  • *Certified Pre-Owned Machines/Refurbished Machines have been completely sanitized, have had their supplies replaced with brand new ones (if applicable), have no significant body damage, and are ready for immediate use! 



How much does shipping cost?

FREE: We offer free shipping on all orders over $49.

$9.99: Orders under $49 will be charged a flat rate of $9.99 for standard shipping.

$59.99: Expedited delivery charge for two business days delivery.

How long does it take to process my order?

If we have your prescription on file, or if your are purchasing an item that does not require a prescription, our typical processing time is 1 full business day. This allows us time to choose the best delivery method for urgency, and to prepare your package with accuracy. Orders received during weekends and holidays are excluded from business days and will begin processing the next available business day. To learn more about our prescription policy, please click here.

How can I change or cancel a recent order?

Special circumstances exist and our team will put forth our best effort in getting your package to you as quickly and accurately as possible. Please contact us right away if you need to change your delivery location or method. Even if a tracking number is not established, we may not be able to cancel or change an order if it has already been submitted to one of our warehouses. is not responsible for courier delays, failed delivery attempts, or missing deliveries.

How will you package my order?

You may receive multiple packages if we choose to split your order in an effort to get you your items as quickly as possible.

How will you send my order?

Your package may be delivered by USPS, FedEx, or UPS. Our team will consider your location and the location of the product(s) type to determine the best delivery carrier for your order.

We will send all PO Box orders through the United States Postal Service. USPS is the only carrier permitted to deliver mail to (place mail in) a PO Box. Private shipping companies or carriers, such as UPS, FedEx and Amazon, are not able to deliver to (place mail in) a PO Box.

How can I track my order status?

During the checkout process, you can select to create a Shop Pay account. Shop Pay will store your payment and delivery preferences for eligible websites, and provides order information. Otherwise, we will provide a tracking number for items shipped once established through the shipping carrier(s) to the contact information submitted on your order.

Where do you ship to?

We ship to the Continental US for Sleep Therapy and Oxygen orders. Due to shipping restrictions related to Durable Medical Equipment regulations and/or licensing requirements, we do not ship prescription required Sleep Therapy orders to Maine & Tennessee, and we do not ship Oxygen orders to Hawaii, Idaho, Louisiana, Maine, Tennessee, and Rhode Island

Where do you ship from?

We ship from our corporate headquarters based in Southern California and/or from multiple fulfillment warehouses across the United States.


With cold & flu season and COVID-19 in full swing, it's more important than ever to focus on your health. Don’t know where to start? Start with your CPAP supplies. You use this equipment every night, so making sure it's being replaced and cleaned properly, is critical not only to your sleep health, but your overall health as well. 

Did you know that the natural oils from your face stick to your cushion? Over time, this will soften your mask cushion and break down the seal. Unfortunately, you will then experience air leaks and a poorer night sleep. Do not let this happen to you!

We created the ultimate guide (as recommended by major insurance companies) to make sure you are replacing your CPAP supplies on time and cleaning them correctly!


See below for the insurance recommended schedule:

  • Every 6 Months: Headgear, Black Non-Disposable Filter & Chinstrap
  • Every 3 Months: Frame, Tubing
  • Every Month: Full Face Mask Cushions
  • Bi-Weekly: White Disposable Filters, Nasal Mask Cushions
  • Only when cracked or broken: Humidifier Chamber 

Failure to timely change your CPAP supplies could lead to infections and respiratory problems! There is hidden bacteria, grime, and dirt all over CPAP supplies!


In-between new supplies, pollen, dust, bacteria, and air particles build up on your supplies. Manufacturers, suppliers, and sleep physicians all recommend regular cleanings of your CPAP equipment and supplies; but keeping track of when to clean what, is no easy task! We are here to help.

“It is vitally important to keep everything as clean as possible, as hoses/tubing and masks can be a prime breeding ground for bacteria and mold,” said Phoebe Ochman, director of Communications for Sleep Apnea Treatment Centers of America.


  • Add warm water to a bathtub or sink.
  • Mix in a mild soap. Some patients prefer baby soap, the Neutralizing Pre-Wash by SoClean, or a 50/50 solution of water and white vinegar.
  • Swirl around for a few minutes and then rinse thoroughly.
  • Leave all items to hang/air dry. Be sure to dry the chamber as much as possible with a paper towel or cloth, and then leave it out to air dry the rest of the way.
  • Clean all high-touch surfaces like nightstands, doorknobs, and light switches daily with a disposable wipe or a cloth and an EPA approved disinfectant.

Important Tips

  • Do not use bleach or other harsh chemicals.
  • Empty unused humidifier water daily and refill nightly.
  • If distilled water is unavailable, a back-up chamber should be kept on hand to immediately replace if residue develops.
  • If your mask has magnetic clips, leave them attached to the mask frame before cleaning. 

Another option is to use a CPAP cleaning machine. It will save you time and energy for easy sanitizing and kill bacteria, germs, and other pathogens on your supplies. Let it do the hard work for you!

Check out our blog on choosing the right CPAP cleaner for you, and visit our wide variety of CPAP cleaning machines now.

The health and safety of our patients is our top priority. We hope these tips are helpful, and we thank you for being a valued addition in our CPAP care community.

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