How many thousand hours is considered an old machine?

xxyzx wrote:
i only admit to being wrong when i am wrong

i read their documents whre resmed says the design life is 5000 hours
most will run longer

The design life is 15,000 hours, not 5000. You must have simply misread (or mistyped).

Prices and hours used on Craigslist are all over the place. I got my backup, Airsense For her - zero hours, for $125. My previous backup was $325 and it had roughly 5,000 hours. I only switched because it was the same model as my primary machine. I would not pay over $350 for a backup, even zero hours. Hold out for a deal because they ARE there.

Irrelevant after bad user was banned.

Irrelevant after bad user was banned.

Irrelevant after bad user was banned.

Suscamoer wrote:Looking at used machines for back up. Wouldn't get a car with over 100,000 miles on it. *

* As long as it's not a Subaru.... according to TatooedLady, they're just barely broken in at 100k miles.

. wrote:

palerider wrote:I've been working on my roommate's oxygen concentrator, and it has a true HEPA filter on the compressor intake. It doesn't even specify a change time on that. Just "check during PM/between patients". (PMs are every three years/26,280 hours.)

Lincare come out and checks mine monthly, test the O2 % and flow. Jim .

Yes, that's pretty typical with the old concentrators that don't have built in oxygen purity monitoring.

See page 31: http://www.invacare.com/doc_files/1148070.pdf

palerider wrote:

Suscamoer wrote:Looking at used machines for back up. Wouldn't get a car with over 100,000 miles on it. *

* As long as it's not a Subaru.... according to TatooedLady, they're just barely broken in at 100k miles.

Had no qualms about buying my Toyota with 102k. The one before that had 124k when I bought it, and still ran like a top at 272k when I sold it.

RicaLynn wrote:

palerider wrote:

Suscamoer wrote:Looking at used machines for back up. Wouldn't get a car with over 100,000 miles on it. *

* As long as it's not a Subaru.... according to TatooedLady, they're just barely broken in at 100k miles.

Had no qualms about buying my Toyota with 102k. The one before that had 124k when I bought it, and still ran like a top at 272k when I sold it.

True that... In all fairness, old cars were pretty much done by 100k miles.. now, many of 'em aren't even due for new sparkplugs till 100k miles

I think your question was about determining the value of a used machine. I can't add to that, however, I have been using cpap about 11 years and I am on machine #3. The first two stopped making enough pressure and that disturbed me sleep to the point the I took them in to have them checked out.

If you're looking to buy a machine online, I'm not sure this can be helpful, but a DME can test a machine. When I took my faulty machines in, they compared the pressure actually produced by the machine to what the machine's screen claimed it was generating. DMEs certainly might want to charge you because it's not a machine you bought/leased from them. However, if you are buying locally, that might be a good test of the machine's functionality. I'm told by my DME that machines decreases their output pressure slowly as they wear out. You can google search cpap output meters and there are a few low cost options, although I cannot speak for their reliability, the ones at the top of the search that I just did look exactly like the ones I've seen my DME use.

I know one time, when my machine needed replacing and my DME was working with my insurance company (the warranty had ran out on one machine and the warranty covered the other machine), they have me a used loaner machine. Although my insurance did eventually purchase a new machine for me. They mentioned that if my insurance would not purchase a new machine for me that they could sell me the loaner or another used machine that they had in stock. I do not recall the price, but I recall that it seemed less than 50% of the cost of a new machine.

Just my thoughts.

dr_pib wrote:I'm told by my DME that machines decreases their output pressure slowly as they wear out

Sounds like BS.

ChicagoGranny wrote:

dr_pib wrote:I'm told by my DME that machines decreases their output pressure slowly as they wear out

Sounds like BS.

Did their lips move, if a DME's lips move they are lying in your face! If you believe one, they have the sucker hooked. Jim

DME's give Used Car Salesman a Good Name.

dr_pib wrote: I'm told by my DME that machines decreases their output pressure slowly as they wear out.

OLD ones, most likely.

Newer ones are computer controlled, and actually measure the output pressure, and constantly (over a hundred times a second) adjust the fan speed to give the programmed pressure.

So, like so many things DMEs say, that statement is BS.