ResMed AirStart 10 Data: AHI & Pressure

The ResMed AirStart 10 is an entry level fixed and auto CPAP sold mostly in budget markets, and it is one of the most confusing machines to pull data from. If you put its SD card into an analysis app and saw nothing, you did nothing wrong. The AirStart 10 records its data differently from the AirSense and AirCurve machines, and most tools simply do not know how to read it.

Here is the honest picture: what the AirStart 10 saves, what it does not, what CPAP Clarity can now show you from its card, and how to read your numbers.

The short answer

The AirStart 10 writes a daily summary to its SD card, not the detailed minute by minute recordings that the AirSense and AirCurve machines write. So the card holds your nightly AHI, your pressure, your mask leak, and your usage hours, one set of numbers per night. What it does not hold is the breath by breath flow trace that lets you zoom into a single apnea.

For a long time that left AirStart 10 owners with nowhere to look. The free OSCAR software does not read this machine at all. CPAP Clarity now reads the daily summary directly off the card, so you can finally see your own nightly numbers and watch them change over time.

What the AirStart 10 records

Open the card and you will find a file the machine updates every day. Inside it, for each night, are the figures your machine calculated itself:

• AHI, your apnea hypopnea index, the number of breathing events per hour
• Pressure, the therapy pressure your machine delivered, shown as a typical value, a 95th percentile, and a peak
• Leak, how much air escaped around your mask, reported as a 95th percentile value
• Usage, how long you wore the mask that night
• Settings, your mode, pressure range, ramp, and EPR comfort level

These are the same figures a clinician sees on a ResMed report printed from the same card. They are the machine's own measurements, not anything CPAP Clarity recalculates.

What the AirStart 10 does not record

The AirStart 10 does not save waveforms. On an AirSense, the machine stores a detailed second by second record of your airflow, pressure, and leak, which is what lets an app draw the wiggly charts you may have seen and mark exactly when each event happened. The AirStart 10 skips all of that to keep things simple and cheap.

So there is no flow chart to scroll through, no timeline of when your events occurred, and no breakdown of how many were obstructive versus central. The machine gives you one honest set of daily numbers and nothing more granular. CPAP Clarity shows you everything the card holds and is upfront about the rest, rather than drawing empty charts that imply data that was never recorded.

What CPAP Clarity shows you

Drop your whole SD card folder into CPAP Clarity and you will see a real night, the same way an AirSense owner does, with a clear note that this machine saves a daily summary only.

• Your AHI for the night, with the standard severity context
• Your pressure, shown as the device's median, 95th percentile, and peak
• Your leak at the 95th percentile, the figure ResMed itself reports
• Your usage, feeding the same therapy score and trends as any other ResMed machine
• A night to night history so you can see whether your numbers are steady or drifting

You can also export a plain text summary to share with your doctor, or generate a therapy report PDF, both built entirely on your own device. Your data never leaves your browser.

How to import your AirStart 10 data

You will need the SD card from the machine and a way to read it on your computer or phone.

1. Power down the AirStart 10 and remove the SD card from the side.
2. Put the card into your computer, or a card reader on your phone.
3. Open CPAP Clarity and drag the whole card folder onto the import area. On a phone, choose the folder when prompted.
4. Wait a moment while your nights are read, then review your summary.

Always select the entire card folder, not a single file. The machine keeps your daily summary and your settings in separate places on the card, and CPAP Clarity needs both to show a complete picture. For a deeper walkthrough of the import step, see our guide on how to read your CPAP data.

How to read your AirStart 10 numbers

Your nightly numbers are most useful as a trend, not a single night. A good way to think about each one:

• AHI is the headline. The AASM considers an AHI under 5 to be well controlled on therapy, though your own target is something to confirm with your doctor. Watch whether your nightly value is steady or creeping up.
• Pressure tells you what your machine actually delivered. On an auto machine it moves night to night as your airway needs change. A sudden jump can hint at congestion, a new sleeping position, or a mask issue.
• Leak is about mask fit. A high 95th percentile leak means a lot of air escaped, which can let events slip through even when pressure looks fine. If your leak is consistently high, a mask refit is usually the first thing to try.
• Usage is the simplest and often the most important. Consistent nightly use is what gets you the benefit of therapy in the first place.

If your numbers raise questions, the right next step is a conversation with the clinician who prescribed your machine, with your CPAP Clarity summary in hand. For more on what each number means, our guide to what AHI is goes deeper.

Frequently Asked Questions

Why did my AirStart 10 card show no data in other apps?

Because most apps, including OSCAR, only know how to read the detailed waveform files that machines like the AirSense write, and the AirStart 10 does not write those. It writes a daily summary instead. CPAP Clarity reads that summary directly.

Can I see my AHI from an AirStart 10?

Yes. Your nightly AHI is one of the daily figures the machine saves to the card, and CPAP Clarity shows it for every night you used the machine.

Why are there no detailed charts for my AirStart 10?

The AirStart 10 does not record a breath by breath flow trace, so there is nothing to draw a detailed chart from. The daily AHI, pressure, leak, and usage are everything the machine measures, and CPAP Clarity shows all of it.

Does the AirStart 10 have an SD card?

Yes. The card sits in a slot on the side of the machine and holds your daily summary and settings. That card is what you import.

Is my AirStart 10 data private in CPAP Clarity?

Yes. All reading and analysis of your card happens on your own device, in your browser. Your therapy data is never uploaded to any server.

The bottom line

The AirStart 10 is a simpler machine than its AirSense cousins, and for a long time that meant its owners had nowhere to see their own numbers. It turns out the card holds more than people thought: your nightly AHI, pressure, leak, and usage are all there. CPAP Clarity now reads them, shows them honestly, and tracks them over time, so you can finally follow your own therapy. Import your card and take a look.