ResMed HumidAir Standard Replacement Water Tub for AirSense 10 & AirCurve 10 (REF 37299)

Stop Waking Up Dry — Keep Your CPAP Humidifier Running Like New

A cracked, cloudy, or worn water tub quietly degrades your CPAP therapy. The ResMed HumidAir Standard Replacement Water Tub (REF 37299) is the authentic factory-matched chamber for AirSense 10 and AirCurve 10 machines — restoring full humidification performance in minutes, no tools required.

Why Replace Your Water Tub?

ResMed recommends replacing your humidifier water chamber every 6 months (or sooner if cracked, discolored, or difficult to clean). A fresh tub means cleaner airflow, better moisture delivery, and a more hygienic sleep environment every night.

Key Benefits

• 🔧 Exact OEM Fit — Factory replacement part (REF 37299) engineered specifically for AirSense 10 and AirCurve 10 series; no adapters or modifications needed
• 💧 Clear MAX / MIN Fill Lines — Easy-to-read water level markings prevent overfilling and ensure optimal humidification every night
• 🧼 Easy to Clean — Designed for quick disassembly and daily rinsing; dishwasher-safe top rack per ResMed guidelines
• 🛡️ Heat-Resistant Construction — High-grade, BPA-free plastic withstands daily heating cycles without warping or degrading
• ✅ Authentic ResMed Product — Genuine OEM part, not a third-party clone; ensures compatibility and warranty-safe use
• 📦 New & Sealed — Arrives in original ResMed packaging, visually inspected before shipment from Burlington, Kentucky

What's Included

• 1 × ResMed HumidAir Standard Water Tub (REF 37299)
• Original ResMed retail packaging
• CPAP machine not included

Compatible Machines

• ResMed AirSense 10 (all models: AutoSet, Elite, CPAP)
• ResMed AirCurve 10 (all models: VAuto, S, ASV, ST)
• Not compatible with AirSense 11 or older S9 series

How to Replace

1. Power off and unplug your CPAP machine.
2. Slide the old water tub out from the left side of the humidifier.
3. Rinse the new tub with warm water before first use.
4. Fill with distilled water to the MAX line.
5. Slide the new tub back in until it clicks into place.
6. Power on and resume therapy as normal.

Who This Is For

• ✅ AirSense 10 or AirCurve 10 CPAP/BiPAP users due for a chamber replacement
• ✅ Anyone with a cracked, stained, or hard-to-clean water tub
• ✅ New CPAP users wanting a spare tub for travel or backup
• ❌ Not for AirSense 11, S9, or non-ResMed machines

Care & Maintenance Tips

• Rinse daily with warm water and mild soap; air dry completely
• Deep clean weekly with a 1:5 white vinegar/water solution
• Use only distilled water to prevent mineral buildup
• Replace every 6 months or per your equipment provider's guidance

Fulfillment & Confidence

• 📦 Physically in stock — held on-site in Burlington, Kentucky; never dropshipped
• 📸 Real product photo — at least one real product photo taken by Chad is included in the gallery; remaining images are AI-generated lifestyle photos for visual context only
• 🚚 Free tracked shipping — ships via USPS Ground Advantage
• 🤝 Owner-operated — Chad personally packs and ships every order

Frequently Asked Questions

Is this the standard or heated tub version?
This is the Standard HumidAir water tub (REF 37299). ResMed also makes a Heated version — confirm your machine's humidifier type before ordering.

Will this fit my AirSense 11?
No. The AirSense 11 uses a different tub design. This tub is compatible with AirSense 10 and AirCurve 10 only.

Can I use tap water?
ResMed recommends distilled water only. Tap water causes mineral deposits that shorten the tub's lifespan and can affect machine performance.

How often should I replace the water tub?
ResMed recommends every 6 months, or sooner if you notice discoloration, cloudiness, cracks, or persistent odor.

Is this an authentic ResMed part?
Yes. This is genuine OEM inventory — not a third-party replica. More4less Outlet sources authentic brand-name products through verified US supply channels.

Safety & Legal

This is a replacement accessory for use with compatible ResMed CPAP/BiPAP equipment. It is not a medical device on its own and does not treat, diagnose, or cure any medical condition. Always follow your prescribing clinician's guidance for CPAP therapy settings and maintenance schedules.

More4less Outlet is an independent reseller and is not affiliated with, authorized by, or endorsed by ResMed Corp. All trademarks belong to their respective owners. Resold under the First Sale Doctrine (17 U.S.C. § 109).