Size Guide :
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Description
xThe React Health Luna G3 Replacement Water Chamber is the direct replacement for your Luna G3 humidifier — a 360 mL BPA-free polycarbonate tank designed for the Luna G3 Series. Holds enough water for all-night humidification while staying durable through repeated cleaning and high-temperature wash cycles.
Compatibility
Compatible with all React Health Luna G3 Series variants:
- Luna G3 APAP
- Luna G3 CPAP
- Luna G3 BiPAP
What's in this pack?
1 × React Health Luna G3 Replacement Water Chamber (360 mL capacity).
When to replace
Replace the chamber every 6 to 12 months to prevent mineral buildup and maintain consistent humidification.
Replace sooner if you see cracks, cloudiness, discoloration, or buildup that won't come off with cleaning. Use distilled water to maximize the chamber's lifespan.
Key features
- 360 mL capacity — enough water for an all-night session without refills
- BPA-free medical-grade polycarbonate
- Dishwasher-safe (top rack) for easy cleaning
- Leak-proof precision seal
- OEM React Health (formerly 3B Medical) part
- Free FedEx delivery
Specifications
- Material: BPA-free polycarbonate
- Capacity: 360 mL
- Dimensions: 5.5" L × 4" W × 2.5" H
- Weight: 4.2 oz (empty)
- Compatibility: Luna G3 Series (APAP, CPAP, BiPAP)
Not sure if this is the right chamber?
Call 1-800-775-0942 with your Luna G3 model — we'll confirm fit before you order.
About Main Clinic Supply
We're based in Rochester, Minnesota — home of the world-famous Mayo Clinic. We deliver free to all Mayo Clinic hospitals and local hotels. With FedEx's strong presence in Rochester, our family-owned business is able to ship late into the evening.
Inspired by Mayo Clinic's values, we prioritize helping people over making profits — embodying Dr. Mayo's 1910 mission statement: "The needs of the patient come first."
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