(06-23-2013, 08:25 PM)JJJ Wrote: I have no more faith in Resmed OEM filters than third party filters. I doubt they did much scientific testing when they selected the material they use.
Your comment about dirty filters doing a better job than clean ones is a good point. But does a really dirty filter actually lower the pressure? Wouldn't the machine compensate? I assume the machine has a pressure sensor that the software responds to in order to adjust the motor speed, but I have no clue where it might be located.
I agree, the machine would compensate until the buildup and pressure drop is really bad.
I disagree about 3rd party filters. They may not have put much "science" into it at ResMed, but they have lots of practical experience with whatever filter material they choose. There are BIG differences between different filter types. Some mostly keep out big things like bugs, some filter very fine particles. Some have large pressure drops, some have very small drops. Some clog easily, some are more clog resistant.