Millennium Oxygen Concentrator Filters

If you own a Millennium oxygen concentrator, keeping it running at full capacity comes down to one thing most people overlook: clean filters. This collection carries the replacement filter components that keep intake air clean, protect the internal compressor, and preserve the purity of the oxygen your concentrator delivers. Neglected filters force the unit to work harder, shorten its service life, and can reduce oxygen output — which is exactly why manufacturers recommend a regular replacement schedule.

The Spirit Medical Millennium Plus Filter Kit (CFK-RESP-MIL+) bundles the pieces you actually need to service the unit in one purchase. It includes an intake HEPA filter to trap fine airborne particles before they reach the internal components, a foam cabinet filter (8" x 4" x 1/4") that catches dust and lint at the exterior housing, a stepped final barb filter (3/16" x 1/4") for the outgoing air path, and a foam intake pre-filter. Together they cover every stage of filtration from the cabinet inlet through to final delivery.

How often should you change them? The foam cabinet and intake filters are typically cleaned or replaced most frequently, while the HEPA and final filters are swapped on a longer interval per your concentrator's maintenance guidance — dustier home environments and heavy daily use call for more frequent changes. Having a complete kit on hand means you're never running the machine on a clogged or worn filter while waiting on a single part.

These are aftermarket-compatible components designed to fit Millennium-series concentrators. Confirm your model and the dimensions above match your current filters before ordering. For related respiratory and medical supply lines, you can also explore Sol-Millennium Medical.