UltaGen CPAP Filters

Every CPAP and BiPAP machine relies on a clean filter to protect both the device and the air you breathe. UltaGen filters from AG Industries are replacement air filters engineered to fit the most common sleep therapy machines, keeping dust, pollen, and airborne particles out of your motor and out of your lungs. For anyone managing sleep apnea therapy at home—or a provider stocking supplies for multiple patients—having the right filter on hand is the difference between quiet, effective treatment and a machine working harder than it should.

The most important thing to get right is compatibility. UltaGen makes machine-specific filters rather than one-size-fits-all pads, so match yours to your device. The 3B RESmart CPAP filter (AG3BMED) fits 3B Medical RESmart CPAP, Auto, and BiPAP 25A Auto units. The Respironics-compatible foam filters (MAG5945 and AG5964M) cover the full RemStar and BiPAP family—Lite, Plus, Pro, Auto, and ST. ResMed users have options too: the AF33916MED fits S8 Series Vantage, Elite, Escape, Compact, and Tango machines, while the AG36851 is made for the S9 Series.

These are disposable filters, meant to be swapped on a regular schedule rather than washed and reused. Most users replace foam filters every two to four weeks, or sooner if they appear gray or clogged, and more often in dusty homes or during allergy season. Buying a supply ahead means you never skip a change—and a fresh filter keeps your machine running efficiently while reducing the particles that reach your airway overnight.

Not sure which model you need? Check the make and model printed on your device before ordering, since UltaGen filters are sized to specific machines and are not interchangeable across brands.