Can an CPAP blower lose pressure over time?

[Flyoverguy]

I began therapy September 2010 and noticed an immediate change for the better. The machine is a PR System One Remstar Auto.

In the last six month i noticed that my AHI, shich had been under 2 for all of the previous therapy, was up around 5. I did not feel as good either and the CPAP machine would often not start up when I hit the button - it would beep sporadically for a minute or in some cases double beep an error which would prompt a power bounce to reset.

My insurance will not let me get a new CPAP until next Fall, and I am wary of my supplier. Therefore I just went and purchased a new System One Auto. After one week, AHI is back down under 2 and I feel much better all around.

So my question is this: has anyone every run into a similar situation where an older CPAP did not seem to be doing the job despite reporting correct pressure? Without calibration there is really no way to tell if the blower motor has lost strength which would lead to a lowered pressure output.

Thanks in advance

[Krelvin]

Yes, there is a testing tool to test that called a Gauge Manometer.

Your DME has one (or more) and should be able to test your older machine without any issue. Takes a couple of minutes. I had my old M-series checked out once and they did it while I was standing there (checked out).

You can even make your own tester... but it would be easier to just take it to the DME to test it.

Build your own:

http://www.apneaboard.com/forums/Thread ... ew-dollars

I know that someone here on Cpaptalk has built one as well.

[Julie]

Your machine was almost 5 yrs old, so was at the border of being due for replacement (everyone's different depending on how many hours you use and the make of your machine). Nothing lasts forever and it was probably time for a new one, but that's no reason to think your new one will have problems prior to a normal lifespan for machines (e.g. 5 yrs and more).

[Tatooed Lady]

That sucks. I have high compliance hours, up to 12 per night, averaging 8ish. This makes me wonder why they count by months instead of hours on the machines, so people might see high hours of usage as a way to quicker equipment upgrade AND better health. Yet another reason to scour craigslist and the like for used units.