The 3B Medical Luna G3 Water Chamber (LG34510) is the official OEM replacement humidifier tank for all Luna G3 CPAP and BiPAP machines. Whether your original chamber has become cloudy, worn, or difficult to clean, this replacement restores the clean, consistent humidification your therapy depends on. Designed for reliability and ease of use, the chamber features a clear, easy?open design that makes daily maintenance simple. Its generous capacity supports comfortable humidification throughout the night, helping reduce dryness and irritation during sleep therapy. This chamber is fully compatible with the entire Luna G3 lineup—including CPAP/APAP units and the BPAP 25A and 30VT models—ensuring a perfect fit without adapters or modifications. For optimal performance and hygiene, 3B Medical recommends replacing the water chamber every 3–6 months. Refresh your Luna G3 system with this genuine OEM replacement and maintain the comfort and consistency of your nightly therapy.