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Before you buy
Returns: 30 days change of mind on UK orders.CPAP accessories are not refundable once opened or used.
Warranty: Manufacturer's warranty

Warranty

The warranty depends on the item's condition. This item's row is highlighted.

ItemWarrantyCovers
Brand new, other brandsManufacturer'sAs set by the maker
Brand new, Alvera6 monthsFaults in materials or manufacture
New (other)12 monthsFaults in normal use
Like new and refurbished6 monthsFaults in normal use
Pre-owned90 daysFaults in normal use
Missing parts or with defects30 daysFaults other than those listed on the page

Alvera items are covered by Elarix Medical, the maker of Alvera. Other conditions are covered by SelfiMed. Every warranty starts on the day of delivery.

Not covered

  • Normal wear: cushions and pillows soften and seal less well with use, and headgear stretches. This is why they are replaced on a schedule.
  • Damage from cleaning with alcohol, bleach, scented soap or a dishwasher.
  • Drops, cuts, crushing, or changes made to the product.
  • The wrong size or model ordered.

How to claim

Email info@selfimed.com with your order number and a clear photo or short video of the fault. If we ask for the item back, please clean it first.

Returns and refunds

CPAP accessories are not refundable once opened or used. Masks, cushions, nasal pillows, tubing, filters and anything that touches the airway are sealed for hygiene and cannot come back once the seal is broken, even if unused.

  • Change of mind: 30 days from delivery on UK orders. You pay the return postage.
  • Opened new items: a deduction of up to 40% may apply; from day 15 to day 30, 40%.
  • Faulty or not as described: full refund within 30 days, and we pay the return postage. After that, the warranty applies.
  • International orders: no change-of-mind returns.

Full terms: returns and warranty policy. These terms do not affect your statutory rights.

All products / CPAP Machine Accessories

ResMed HumidAir 11 Standard CPAP Water Tub - Ref. 39100

ResMedSKU COC058701
Price
£4999

Price shown excludes VAT.

VAT relief available on this product

Eligible customers can claim VAT relief on this product at checkout.

Quantity
Unit price£49.99
Total£49.99

Free UK mainland delivery on orders over £300

Purchase options

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Delivery frequency

  • Save 10% on this order and every delivery after it
  • Your order ships automatically every month
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Frequently bought together

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Total for the set £0.00

Key attributes
Brand
ResMed
Category
CPAP Machine Accessories
SKU
COC058701
Options
2 to choose from

ResMed HumidAir 11 – Standard Water Tub for AirSense 11 CPAP

The ResMed HumidAir 11 Standard Water Tub is a genuine replacement humidifier chamber engineered for the AirSense 11 CPAP series. Designed with durable, medical-grade plastic and a precision silicone seal, the ResMed HumidAir 11 tub ensures consistent humidification, helping maintain comfort and performance throughout nightly therapy.

Its simple, hand-washable design makes maintenance quick and effective. Easy to remove, refill, and reinstall, this replacement water tub supports long-term device reliability while maintaining consistent moisture output for optimal therapy results.

ResMed HumidAir 11 Standard CPAP water tub 39100 side view


Key Features of the ResMed HumidAir 11

  • Authentic Replacement: Designed specifically for the ResMed AirSense 11 CPAP system.

  • Durable Construction: Made from medical-grade plastic with a tight silicone seal to prevent leaks.

  • Consistent Humidification: Maintains stable moisture levels for greater comfort.

  • Easy Maintenance: Simple to remove, refill, and clean by hand (not dishwasher safe).

  • Long-Lasting Performance: Replace every 6–12 months for optimal results.


Why Choose the ResMed HumidAir 11

Built for reliability and ease of use, the ResMed HumidAir 11 Standard Water Tub provides consistent humidification, simple cleaning, and a perfect fit for your AirSense 11 CPAP. With its sturdy construction and long service life, it’s the trusted choice for maintaining comfort and protecting your device’s performance.

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