1. How often should the filter be replaced on the CPAP machine? 2. Are the hypoallergenic filters really any better than the standard filters. 3. Standard filters seem to be made up of the same material as electrostatic floor vent filters... I can get a package of those vent filters for $4 and make ...

Thanks all, very helpful... especially the sleepyhead site as it gave detailed information on causes and problems with leaks. I'll be looking at the data and figure out what's up. I'll try taping and if that doesnt work a ffm and see what happens.

How important is it to eliminate air leaks? I am new to all of this and last month I started using a mask (nasal, Swift Fx) and except for high air leak (46 m/l) all seems to be doing well: AHI, AI, and Central AI are .2 or .1. Events per hour are under .4. But the Mask Seal indicator on my Resmed A...