Philips DreamStation Disposable Ultra Fine Filter

The Philips DreamStation Disposable Ultra-Fine Filter (1122519) is the genuine fine-particle filter for original DreamStation, DreamStation Pro, and DreamStation Auto machines. Identifiable by its lighter blue frame. Replace approximately every 30 days.

The Philips DreamStation Disposable Ultra-Fine Filter (1122519) is the genuine fine-particle filter for the Philips DreamStation, DreamStation Pro, and DreamStation Auto CPAP and BiPAP machines. It captures particles too fine for the reusable pollen filter to catch — including smoke, bacteria, fine dust, and other airborne contaminants. The filter material sits inside a lighter blue plastic frame, distinguishing it from the darker-blue reusable pollen filter that it pairs with.

Key Features

• Fine-particle filtration: Catches smoke, bacteria, fine dust, and other small airborne contaminants the reusable pollen filter alone can't capture.
• Lighter blue plastic frame: Visual identifier — distinguishes this disposable ultra-fine filter from the darker-blue reusable pollen filter (1122446).
• Disposable design: Replace rather than wash — typically every 30 days, sooner if visibly discoloured.
• Optional but recommended: Adds a layer of finer filtration on top of the required pollen filter — particularly worth running in homes with smokers, pets, or higher airborne particle counts.
• Genuine Philips Respironics: Manufacturer-specified part 1122519.

The Two-Filter System

The DreamStation uses two filters working together. The required reusable pollen filter (1122446) sits at the front of the air intake in a darker blue frame and handles the larger particles — dust, pollen, pet dander. This disposable ultra-fine filter sits behind it in a lighter blue frame and adds a second stage of finer filtration. The pollen filter is mandatory; the ultra-fine filter is optional but highly recommended for cleaner air delivery.

Disposable, Not Reusable

Unlike the foam pollen filter, this ultra-fine filter is disposable — it cannot be washed, rinsed, or otherwise cleaned. Attempting to wash the filter damages the material and reduces its filtration effectiveness. Replace it on schedule rather than try to clean it.

Compatibility

Compatible with all original Philips Respironics DreamStation Series machines:

• Philips Respironics DreamStation Auto CPAP
• Philips Respironics DreamStation Auto + 4G Modem
• DreamStation CPAP, DreamStation Pro CPAP, and DreamStation Auto/Pro BiPAP variants

Not compatible with the DreamStation 2 or the DreamStation Go — both of those models use differently-shaped filters that aren't interchangeable with this part.

Replacement Schedule

Replace approximately every 30 days, or sooner if you notice visible discolouration, dirty patches, or torn material. Users in dustier environments — homes with pets, smokers, or near construction — may want to replace more frequently. Replace immediately if the filter has been exposed to liquids or visible debris.