Respironics Reusable Foam Filter for M Series and System One - 2pk

The Respironics reusable foam filter (2 pack) for M Series and System One machines is on sale for Black Friday 2026 at GoCPAP from Nov 1st to Nov 30th. It is washable and reusable, which cuts down on how often you have to buy replacements. No prescription is required.

This 2-pack reusable foam filter is designed for Philips Respironics M Series and System One CPAP machines. Unlike a disposable filter you replace monthly, this one is washable and reusable, cutting down on how often you need to buy replacements.

Is This the Right Filter for You?

This is a good fit if you own an M Series or System One machine and would rather wash and reuse a filter than replace a disposable one every month. If you'd prefer a disposable option instead, see the M Series Disposable Filter or the M Series Disposable Filter with Tab.

Key Features at a Glance

• Washable, reusable foam filter
• Compatible with M Series and System One machines
• 2 filters per pack
• Lower ongoing cost than a monthly disposable filter

How to Clean This Filter

1. Wash the filter with mild soap and water.
2. Rinse it thoroughly to remove all soap residue.
3. Air dry completely before placing it back in the machine.

Clean this filter bi-weekly as a general guideline.

Replacement Schedule

Replace this filter every 6 months, or sooner if it looks worn, discolored, or otherwise compromised even with regular cleaning.

Specifications

Other M Series Filter Options

Prefer disposable? See the M Series Disposable Filter or the tab-style M Series Disposable Filter with Tab, both replaced roughly every 2 weeks to a month depending on the specific product.

Complete Your M Series Setup

Running a DreamStation instead? See the Respironics Disposable Filters for DreamStation or the Respironics Reusable Filter for DreamStation. See more from the brand on the Philips Respironics brand page.

Frequently Asked Questions

How often should I clean this filter?

Bi-weekly, using mild soap and water, followed by a thorough rinse and complete air drying before reinstalling.

How often should I replace it?

Every 6 months, or sooner if it becomes worn, discolored, or damaged.

What's the difference between this and the disposable filters?

This foam filter is washable and reusable, while the M Series Disposable Filter options are meant to be thrown away and replaced on a more frequent schedule.

Will this fit my System One machine?

Yes, this filter is compatible with both M Series and System One machines.