Pressure difference between slimline and standard hose

Can someone in the know tell me whether there would be a pressure differential problem using a slimline hose with my backup machine, a Resmed Auto 25, in lieu of the standard sized hose? Thanks

I'm not sure there woud be a pressure change but I would say you will get more volume with the standard size hose. Our host sells a Climateline 'Max" hose that is advertized for BiPAP. Check out the link.

https://www.cpap.com/productpage/Climat ... ystem.html

I have read that the larger hose made it easier to breathe.

According to the product information page, the SlimLine and ClimateLine tubing "will ONLY work with the S9 Series CPAP Machines."

https://www.cpap.com/productpage/resmed ... igodigital

EDIT: Also says this. "This tubing will ONLY work with the S9 Series CPAP Machines. On any other machine, the SlimLine Tubing will significantly reduce overall pressure at the mask and may produce erratic pressure outputs for Auto CPAP machines."

There is more pressure drop with the 15mm diameter hose. There is a setting for either 15mm or 19mm diameter hose on the S9.

Is there any difference in comfort? Why would one want to use slim line rather than standard?

The Slimline is smaller, lighter and less bulky. That is the only difference I could see.

gertrude wrote:Is there any difference in comfort? Why would one want to use slim line rather than standard?

Primarily because I wanted to know if I could use the slimline not only for my primary unit (the S9) but also with my backup machine which is the Resmed Auto 25. I realize the unheated hoses aren't very expensive, but it would be nice to just keep one type of hose stocked in case one breaks or tears.

This would be a possibility--para pesos muy pequeno.
https://www.cpap.com/productpage/6-foot ... -ends.html

I believe that a narrow diameter tube makes it extra difficult for the machine to make rapid pressure adjustment and measurement at the mask for things like bilevel and EPR. It also makes airflow, apneas, snoring, etc. harder to measure.

Bilevel/BiPAP/VPAP machines are especially sensitive to problems with narrow, long, or otherwise non-standard hoses.

Some machines are designed to compensate for slim diameter hoses and have a separate setting in the menu. I wouldn't be surprised if there aren't still some differences in the treatment and results.

There may also be some outright differences in "static" pressure at the mask, but I believe that the dynamic changing pressure effects will be larger.

I am new to this, and have an older engineering background..... (that is I have not used it for a while) But ist seems to me that a thin hose would have less volume of air it in, and would be easier to change the pressure..... just one opinion, nd nothing to do with the question of will it work with a specific machine.


The characteristics of pushing air through a tube, and doing all the resmat dows with pulses and air flow measurements lead me to beleive that unless the machine is made for the slim line, it would confuse the !@#$!@#$ out of it unless it were designed for it......