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Key Features

  • Genuine ResMed Part: OEM replacement water tub for the H5i heated humidifier.
  • Made for the S9 Series: Fits S9 CPAP and bilevel machines paired with the H5i.
  • Comfortable Humidification: Helps reduce nasal and throat dryness during CPAP therapy.
  • Easy to Refill and Clean: Opens for filling and hand washing.
  • Description
  • Parts
  • Specs
  • Included Items
  • Reviews 0
  • Q&A

ResMed H5i Standard Water Tub for S9 Series CPAP Humidifier

The ResMed H5i standard water tub is the genuine replacement water chamber for the H5i heated humidifier used with ResMed S9 series CPAP and bilevel machines. It holds the water that the H5i warms to add soothing humidity to your therapy air.

Over time, water tubs can become cloudy, collect mineral deposits or develop small cracks. A new tub keeps your humidifier clean and working properly, helping prevent a dry nose, mouth and throat.

Product Highlights:

  • Genuine ResMed Part: OEM replacement water tub for the H5i heated humidifier.
  • Made for the S9 Series: Fits S9 CPAP and bilevel machines paired with the H5i.
  • Comfortable Humidification: Helps reduce nasal and throat dryness during CPAP therapy.
  • Easy to Refill and Clean: Opens for filling and hand washing.

When to Replace Your H5i Water Tub

Replace your water tub when it looks cloudy or scratched, has buildup that won't wash off, or shows any cracks or leaks.

Cleaning and Maintenance Tips:

Empty the tub each morning and let it air dry. Hand wash weekly with warm water and mild soap, rinse well and let it dry completely before reassembling. Always fill with distilled water to help reduce mineral buildup.

Compatible with:

  • ResMed H5i heated humidifier for S9 series CPAP and bilevel machines

Not compatible with AirSense 10 or AirSense 11.

Included Items:

  • 1 x ResMed H5i Standard Water Tub

Keep your S9 humidifier clean and comfortable. Order a genuine ResMed H5i water tub today.

Related Products:

Related parts
Manufacturer ResMed
Warranty 90-Day Warranty
  • 1x H5i standard water tub

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