well, till they invent one that doesn't whistle, then I won't be using it. It keeps me awake and defeats the purpose of CPAP.SnoringInOregon wrote: ↑Tue Mar 13, 2018 11:36 amIf you carefully examine the fine filter when you remove a used one, you can see that it has become darker because of fine contaminants it has filtered from the air. Dust, pollen, smoke, whatever.
If you omit using the fine filter, then that dust winds up in the interior of your machine where it coats the air pump and the rest of the air path. Or it winds up in your lungs.
How much does it cost to replace a lung? How does that compare to the cost of a filter?
I'm probably overly sensitive about this, but I don't even want to use knockoff fine filters, e.g. what cpap.com sells. I only want the name brand Respironics ones I buy from my DME.
I use the other filter.