Home Oxygen Concentrator Maintenance

One of the most frequent questions we get asked is "What maintenance does my home or stationary concentrator need?".

Home oxygen concentrators are like any machine, and they require regular maintenance and service to ensure they operate and perform correctly. Luckily, home units (concentrators that run only on AC/house power) are easy to maintain.

To assist with this question, we have developed a general maintenance guide as well as instructions specific to each model of concentrator.

General Home Oxygen Concentrator Maintenance

1. The first step is good maintenance is making sure the unit is placed in a well-ventilated space with roughly 6 feet of space around it to properly pull air and vent exhaust. This means that a closet, bathroom or small corner are NOT good locations. The unit needs about 8 inches – 12 inches of space around it. This is roughly an 80 square foot room.

2. A concentrator pulls air from the surrounding environment to create the medical grade concentrated oxygen, so it is essential to keep the unit itself clean and in a clean environment. The outside of the unit should be kept clean of dust and pet hair. If the unit itself is needing to be routinely cleaned, it is a sign that the filters may need more frequent cleaning as well.

3. Make sure the unit is run at least 10 hours per month (these do not have to be 10 consecutive hours). Running a unit ensures that the lubricants continue to move and the sieve bed does not harden. The sieve beds filter the nitrogen and other trace gases from the air to create the medical grade oxygen.

4. If you are using a humidifier kit with your home concentrator, it should be thoroughly cleaned monthly. The bottle and top should be gently hand washed in warm water.

    a) Don’t use abrasive sponges or cleaners as this may scratch the plastic; scratches are where bacteria prefer to grow.

    b) It is best to rinse and use water pressure to clean. If dirt or other contamination isn’t easily removed from the bottle, you should replace it.
    c) The tube from the humidifier to the nozzle on the unit can be rinsed off as well, but it should not require cleaning or monthly replacement.

5. Most units have either a Gross Particle Filter (GPF), a HEPA filter or both. See below for unit specific information.

    a) Gross Particle filters catch large particles, pet hair and, other "dust bunnies." These typically look like foam and should be inspected monthly. If they are dirty, they should be washed with warm soapy water. They only need to be changed if they will not rinse clean or are deformed.
    b) HEPA filters catch finer particles. They typically look like white paper housed in clear plastic. These should be inspected quarterly and replaced if the white paper looks dirty.

Filters for Home Oxygen Concentrator Maintenance

Unit Specific Maintenance

Philips Respironics Everflo Q: This unit has a HEPA filter but does not have a Gross Particle Filter (GPF). Instead, there is a "Whisper Cap" that sits over the intake with the dual purpose of sound baffling and air filtering. The Whisper Cap acts like a GPF. Simple removal of the cap (be gentle!) will allow you to wipe down the intake vent. You can also use a vacuum hose on the cap itself. The Everflo Q’s HEPA filter should be inspected quarterly. It looks like folded white paper inside a clear plastic housing.

This unit has a HEPA filter and a "Whisper Cap" that sits over the intake with a dual purpose of sound baffling and air filtering. The Whisper Cap acts like a Gross Particle Filter (GPF). You can purchase a GPF for the Everflo Q that will replace the Whisper Cap. This is recommended if you have pets or live in a dusty environment. Simple removal of the cap (be gentle!) will allow you to wipe down the intake vent. You can also use a vacuum hose on the cap itself. The Everflo Q’s HEPA filter should be inspected quarterly. It looks like folded white paper inside a clear plastic housing.

Invacare Perfecto 2: This unit has a HEPA filter and Gross Particle Filter (GPF).

Airsep Visionaire 5: No HEPA filter, just GPF on the side of the unit.

Inogen at Home: This unit has a HEPA filter and GPF. The unit also has replaceable sieve bed and the machine will alarm if this needs to be replaced. Please contact our Customer Support Team at 1-877-303-9289 for assistance if the Inogen at home is alarming.

Inogen at Home HEPA Filter

Philips Respironics SimplyFlo: The Philips SimplyFlo doesn’t have a GPF or HEPA filter that is accessible by the patient. If you notice dust and debris appearing around the vents or the bottom of the unit use canned air or a gentle vacuum (like a DustBuster™) to clean the intake vent.

When to call the Customer Support Team

Generally, any time your concentrator is alarming, please give us a call so we can assist in diagnosing the problem – most can be solved over the phone. Concentrators today don’t require regular specialized servicing; keep in mind that a concentrator that is used regularly will function the best over time.

Most home concentrators will alarm with lights and occasional beeping during their warm-up cycle – which can last 20 minutes. If red, amber or yellow lights appear when the unit is first turned on but go away during this period there is no cause for concern – the unit is running properly. If these alarms do not go away or appear after 20 minutes, it is a sign of a problem, and you should contact our customer support team.

Over time, like anything mechanical, concentrators will sound different and sometimes louder, this is normal. However, a concentrator should never be louder than a refrigerator, for example. If you can’t sit in a room with the concentrator running and speak at a normal volume with another person the unit is probably louder than it should be. While the sound of the machine will change with time, there should never be a knocking or grinding noise. These sounds are indications there is a problem.

Every concentrator monitors the purity of the unit and will alarm when purity drops; some units will display the purity, however, most just alarm when the purity has dropped. A pulse oximeter is a valuable tool you can purchase to ensure you are getting the saturation you require and will help us diagnose potential problems on the phone. Remember that concentrators require air to operate and will not function well in poor ventilation, smoke, or other contaminated environments (for example spraying an air freshener in the air next to the concentrator).

If you believe your concentrator is not working properly, please give our Customer Support Team a call at 1-877-303-9289 and we will happily help. For information on portable units, view our Portable Oxygen Concentrator Maintenance Guide.

About Scott Ridl: Scott joined American Medical Sales and Rentals in 2008 as a Web Manager and Content Writer. He is a writer and designer. He is extensively trained on oxygen therapy products from leading manufacturers such as Inogen, Respironics, Chart, Invacare, ResMed and more. Scott works closely with respiratory therapists and oxygen specialists to educate the community about oxygen therapy products, COPD, asthma and lung diseases. He writes weekly columns and is passionate about educating the community on oxygen therapy and respiratory issues.

25 thoughts on “Home Oxygen Concentrator Maintenance”

  • William Harvey

    Do y’all sell the strap with the small clips that fit the Inogen one g4

  • Richard Gragg

    Invacare Perfecto 2 is beeping repeatedly with O2 light green and flow rate above 0.5 L/min.

    • Margaret Goodman
      Margaret Goodman February 11, 2019 at 4:20 am

      I would start by calling the company where you purchased the unit. If the machine is covered under warranty the,y will not only help troubleshoot the issue on the phone but also help you get it sent off for repairs if needed.

  • Dixie Shelver

    How often should my unit be checked for efficiency, ie.. filters and such?

    • Margaret Goodman
      Margaret Goodman March 12, 2019 at 6:46 am

      You should clean the filters on at least an every other week basis and let them dry completely but other than that there isn't much maintenance to these machines.


    I am using the oxygen concentrator from past one year. The reading showing is 5988. I have observed some abnormal function of the machine. Do it requires any maintenance/servicing. Plz suggest.

    • Ed Rodgers

      Hello Prakash,
      Without knowing which model of concentrator you are using, it is difficult to diagnose. If you give our service department a call they are really good at helping with questions like this. Just give us a call and talk with them on what you are seeing. 877-794-5853.

  • Amy Towne

    I use a respironics home oxygen concentrator 22/7. This unit has not been serviced in over a year. The heppa filter, (which I found difficult to access,) looks like there's an alien growing within the plastic box. I tried to vacuum it out but there's only a tiny hole to access? Apparently it's a sealed unit? Due to my poor health and the fact that I have two large dogs, my home is rather dusty dirty and hairy. Should I replace my filter more often? Because I'm already compromised due to my respiratory disease. Could a dirty filter pose me any added health risk? Thank you for your prompt reply.

    • Ed Rodgers

      Hi Amy,

      You should look to clean it more frequently. Like any machine that draws air in, the filters should be cleaned regularly while the ability to deliver oxygen to you is likely not impacted, the life of the machine and the quickening of needing service could occur as it is needing to work harder to get air into the machine through your alien life. Also it can make the machine run hotter which can create service issues. Thanks for posting and good luck.

  • Joyce Ritter

    I have a choice of buying a used stationary oxygen concentator. 1 has 465786.4. On the meter. The other has 08142.0 on the meter. They are both the same price. Which one is the best buy. What do the numbers on the meter mean. Please answer by e mail. Thank you

  • Linda. Dill

    One of the best companies to do business with. Very caring. Thank you,

  • Kathleen

    I have a EverFlo OPI from Respironics, for approx. 10 years, and the counter show: 15357.8.
    I have multiple questions:
    1. When I had a company service it (during its warranty) I remember the tech opening multi-compartments, but I can only find 1 (the filter compartment). Do you know where else I should inspect?
    2. I need to buy a new filter for it, and whatever else should be replaced/checked. Can I buy those supplies from your company?
    3. Do you have technicians in Southern California that could take over the maintenance instead?
    4. How do I check to see if the O2 coming out is the correct O2 liters? I mean, if I place it on 3L/min, is there a way for me to periodically check to make sure it is actually producing the correct liters O2?
    5. Could a portable (small/travel/tabletop) O2 generator be able to work as a long-term replacement for this unit?...If what is the life of the smaller device in contrast to what I already have...and do you carry such a device?
    Please email me your response as well.
    Thanks :)

    • Sanket Jain

      Hi Kathleen, apologies for the late reply. I hope you found the answers to your questions.
      Anyways, here's my response:
      1. Air inlet filter is the only thing you can change by yourself. For the rest of the repairs, the housing needs to be removed. We do not recommend removing the covers. Repairs must be performed by an authorized service technician.
      2. Our Oxygen Specialist would be happy to help you out with your requirements. Please give us a call at 877-644-4581.
      3. No, we do not have a facility in California. Please check with the manufacturer to locate the closest repair center.
      4. If the oxygen flow is impeded, the device will alert by illuminating the LEDs. Authorized service technicians have the equipment to check the air pressure and oxygen purity levels. Let your technician know that you want to get those tested.
      5. There are portable oxygen concentrators that deliver continuous oxygen. Our Oxygen Specialists would be happy to understand your requirements and advise the way forward.
      You can reach us at 877-644-4581 and we'll happily help you with your questions. Thanks!

      • Sanket Jain

        Adding to the above comment. You can verify the liter flow of your oxygen concentrator by using a 'Liter Meter'. This device is available from Salter Labs in three configurations:
        #1271 for a flow rate range of 0 to 2.5 LPM
        #1272 for a flow rate range of 0 to 8 LPM
        #1273 for a flow rate range of 6 to 15 LPM
        Click here to know more.

  • Samweel

    Why my oxygen concentrator keep alarming

    • Sanket Jain

      Check the user manual to figure out what the error is and how to fix it. If you are not able to troubleshoot it, then contact your equipment provider (where you purchased the concentrator from) or the manufacturer.

  • Jeniffer Lim

    I have an Owgels 5Lheavy duty oxygen concentrator (black and white). There was a beeping sound wherein the display says that the filter should be replaced. I replaced the filters just now but the beeping sound is still there. What should I do to sort of reset the machine and let it know that I have replaced the filters?

    • Sanket Jain

      We are not familiar with this brand, please contact your equipment provider or the manufacturer to troubleshoot. Here's the manufacturer's website: http://www.owgelsgroup.com/en/

  • Jay Ellingford
    Jay Ellingford May 12, 2020 at 3:09 am

    Everflo Q yellow light comes on at some point during the night and is still on in the morning. What should be done?

    • Sanket Jain

      A steady yellow light on EverFlo Q means that the device has detected low oxygen, i.e. device is delivering oxygen at a concentration of less than 82%. You may continue to use the device but contact your equipment provider for repairs.

  • customer

    what color brown should my air inlet filter be before I change it? part # RP-401

    • Sanket Jain

      # RP-401 is the Inogen at Home air inlet filter. The inlet filter on the top of the concentrator (behind the handle) should be replaced when visually necessary (i.e. filter appears dirty) using the Air Inlet Filter Replacement Kit. This filter can be replaced by the user themself.


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