Respironics Millennium M10 with OPI Oxygen concentrator review

About 80% of the air surrounding us is nitrogen, while only 20% is oxygen. In any situation where an individual cannot get oxygen from atmospheric air on his or her own, there is an urgent need for oxygen therapy. These apply to respiratory conditions, such as chronic obstructive pulmonary disease (COPD) or obstructive sleep apnea (OSA).

Breathing is a reflex, subconscious and continuous process for all of us and it could get really scary when such a basic habit stops. In such situations, an oxygen concentrator could be recommended for you by to doctor to ensure a continuous supply of supplementary oxygen. One of such oxygen concentrator is the Respironics Millennium M10 oxygen concentrator, designed for patients with persistently low oxygen levels with prescriptions for oxygen flow higher than 5 litres per minute.

The Philips Respironics Millennium M10 has been designed to be with an optional oxygen percentage indicator (OPI) which automatically reads the oxygen output and alerts the user when oxygen levels are below 70%. This unit is also applauded for its ability to produce higher doses of medical grade oxygen at 10LPM compared to most home oxygen concentrators. Isn’t that impressive? It’s like walking about your home with a hospital oxygen tank in the form of a little compact box.

Let us know more about the Respironics Millennium M10 in this review.


What Features should I expect from the Respironics Millennium M10 Oxygen concentrator?

It is imperative to know a few things about a stationary home concentrator before investing in it. Your questions might be about the flow rate, maintenance, cost, mobility, or even its weight. These are all valid concerns because they pertain to your health. All of these and more would be answered below.


Design, Size, and Weight

Being one of the most applauded and effective home oxygen concentrators on the market, the Respironics Millennium M10 is built to last and has protective caster wheels. This machine is equipped with a number of “techy” features, such as an oxygen percentage indicator (OPI) to measure the oxygen output and concentration levels using ultrasound (More about OPI below). It also has a maintenance-free SCMT “sure cycle” valve which only exists in this device.

With a weight of 53 pounds, this unit is undoubtedly one of the heaviest home oxygen concentrators. Its dimensions – 19 inches in width, 13 inches in depth, and 27 inches in height still allows the device free mobility through the house on its capable wheels.



As earlier mentioned, the Millennium M10 oxygen concentrator was made with strong wheels to withstand rough usage. Another perk of this device is an integrated sieve canister to protect its tubing connections.


Usability, Safety and Oxygen Percentage Indicator (OPI)

The unit may or may not be used with OPI. If you have one, it gives an additional safety feature to your oxygen concentrator. As mentioned above, it reads the oxygen output for purity and sounds an audible alarm with visual color-coded indicators to warn the user of the reduced oxygen concentration levels.

For the visual indicators:

  • Green light represents oxygen concentration levels above 82%
  • Yellow light represents oxygen concentration levels between 70-82%
  • Red light represents concentration levels below 70%. This is the point the audible alarm goes off.

These alarms also go off if there is low system pressure, high system pressure, power failure, or no oxygen flow.

Another safety feature for this machine is protective tubing neatly guards its wires to protect them from damage and also protect users from electric shock.


Flow Settings for the Millennium M10 Oxygen concentrator

Intriguingly, the Respironics Millennium M10 possesses a twin head compressor which allows for higher liter flow and oxygen concentration as high as 10LPM continuous flow medical grade oxygen. This device was designed for patients who need more oxygen than other regular patients.


Oxygen purity

The Respironics Millennium M10 oxygen concentrator provides a range of oxygen concentration levels dependent on the selected flow setting.

  • At 1-2LPM, it offers 88% to 96%
  • 3-7LPM, it offers 92% to 96%
  • At 8-10LPM, it still offers 88% to 96%.

So impressively, regardless of the flow setting, users can get up to 96%.


Noise level

Just like other competitors, this oxygen concentrator produces about 50 decibels. In my opinion, this seems fairly okay for the level of oxygen output it produces.


Power consumption

It consumes roughly 600 watts in normal operation.



This is key for all appliances, especially for the Millennium M10 working at the capacity it does. But, all that hassle would not be needed for this device because it is maintenance-free and only requires cleaning of its external filter – the air inlet filter. It should be cleaned at least once in 7 days and replaced when necessary.


Accessories for the Respironics Millennium M10 oxygen concentrator

  1. Respironics Millennium M10 with OPI
  2. Nasal cannulas
  3. Oxygen supply tubing
  4. Nut and Stem oxygen tubing adapter
  5. Reusable foam air inlet filter
  6. Humidifier bottle
  7. User manual



The Millennium M10 comes with a warranty of 1 year. However, users may be offered an additional extended 2-year warranty by the dealer at purchase.


Final Thoughts

This high-flow Millennium M10 device offers patients great therapeutic support. Its LED alerts and indicators are part of the user-friendly control panel. Also, its durable design and low maintenance were deliberate moves made by the manufacturers so it could last longer than its competitors. My guess is, these are the reasons this unit has been ranked one of the overall best home oxygen concentrators.

To some, this Respironics Millenium M10 with OPI review may not have been “mind-blowing”, but it is still a great oxygen therapy solution for patients who need oxygen flow up to 10 litres per minute. This still comes highly recommended by medical experts because it may have been designed specifically for you!

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1 review for Respironics Millennium M10 Oxygen Concentrator Review (With OPI)

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  1. Michael

    Salesperson very helpful. Order wes placed efficiently and item was received promptly. Follow-up was appreciated.

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    Respironics Millennium M10 Oxygen Concentrator Review (With OPI)
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