I bought a machine that only has a foam filter, so no PM2.5 filtering. I live in Chiang Mai Thailand and we are in burning season right now, so the PM2.5 reading in my apartment is up around 60 at night. I feel like I'm getting a concentrated dose while I sleep. Is it possible to add PM2.5 filtering...

Thanks guys. I guess if I started out needing 17/15 of pressure and now I have almost no AHI even at 4/4 then my apnea must be getting better. I've been taking allergy shots which is helping my asthma so I do think my apnea has improved. I have a Philips Respironics System One Bipap S/T with humidif...

I have a Bipap machine and I usually use settings of IPAP: 17 and EPAP: 15. I thought if I set the machine down to it's lowest setting of 5 it would in effect act like a sleep study by not having enough pressure to help my apnea but the machine would still record AHI. I expected to see my AHI go way...