#replace every 2-4 weeks

Universal CPAP Inline Filter Review – Does the rislabo Filter Protect Your Machine?

I put four of these rislabo Universal CPAP Inline Filters through two months of real sleep therapy use to find out whether they actually protect your machine, maintain airflow, and justify the price. Here's my honest verdict after nightly use across a ResMed AirSense 10 and a Philips DreamStation 2.