Cpap mask exhaust diffuser filter developing black spots overnight.

And too many have never seen a cpap machine . . .

Well, fwiw, I also use a Eson mask and have noticed that those holes turn black on the regular as well. Since it’s not a filter, and just a diffuser for the stream of exiting air I usually peel a layer off the fiber pad and use it a few more times. But I’ve always thought “man, I must be breathing in a lot of dirt or something - yuck”

Im glad that someone necro-posted to revive this thread because I see OP had it turning black using a resmed. I’ve been more paranoid about the black on that diffuser pad ever since the Phillips recall. Reviving this post offered some welcome relief with the timing.

Firemonkey wrote: ↑

Mon Jul 12, 2021 10:32 pm

I usually peel a layer off the fiber pad and use it a few more times.

You can wash the diffuser material.

palerider wrote: ↑

Mon Jul 12, 2021 11:33 pm

You can wash the diffuser material.

Thanks for that - I never even considered that pad might be washable.

I have the same issue. I have never used vinegar until today - only soapy water. I'll try vinegar for a while in case it is mould.

I discovered that the diffuser filter is removable (in the resmed 'pillows' thing). I used one of those plastic toothpicks with dental floss on it. You have to be careful, as it is delicate. I gave it a good scrub with straight washing up liquid and a small soft toothbrush. That god rid of about 80% of it before I got bored. I also flipped it over. Hopefully vinegar will deal with the rest.