Water Chamber for M-Series REMstar CPAP/BiPAP System Humidifiers


13 Total Reviews

Chamber Type:
R2B M-Series Chamber with Side-by-Side Openings
R3B M-Series Chamber with Staggered Openings

  • Brand:Philips Respironics
  • Part Numbers:1003757-R2B, 1003758-R3B

These humidifier water chambers are designed to work with all M-Series Heated & Cool Passover Humidifiers.

Compatibility Information: Two chamber designs are available for MSeries Humidifiers: the R2B (Part 1003757) with side-by-side openings and the R3B (Part 1003758) with staggered openings.


  • Manufacturer:Philips Respironics
  • Part Numbers:1003757-R2B, 1003758-R3B
  • HCPCS Codes:A7046
  • FSA Eligible:Can be purchased with FSA Cards
  • Glad I could get replacement

    I have an old Remstar Plus and I wanted a new water reservoir. I was so worried I couldn't find one (they're "out of print" so to speak). But you guys had them, so I got 2. Thank you! And you had a great way for me to be sure I got the right one. Fast shipping too.
    Written by lunaroth2, -2018-11-28

  • Great Customer Experience

    The item I ordered was defective. When I called to report the issue the CSR was very friendly and attended to ensuring that a replacement was tested and shipped within 24 hours.
    Written by bobtingley49, -2017-10-03

  • Quality and Fast Shipping

    I got a very good product and it was shipped very fast.
    Written by danecruz1, -2017-09-19

  • Water Chamber

    Great perfect fit
    Written by Richard, -2016-06-23

  • Fast service

    Fast service great replacement
    Written by Bill T, -2016-05-10

  • Water Chamber for M-Series REMstar CPAP/BiPAP System Humidifiers

    Works Great... It is doing the job.
    Written by Thom H, -2014-12-29

  • RemStar Humidfied Replacement

    It was great finding an exact replacement for my M-Series RemStar Humidifier Water Chamber. The replacement part is an exact match to the factory original. The website described the differences in the various chambers that were utilized for my humidifier making it snap to order the right one. CPAP Exchange has always been my "goto" online supplier for parts and accessories. As a company, they are quick, accurate and cost effective for me. Two Thumbs Up...Five Stars...well, you get the idea!
    Written by Jose A, -2014-08-13

  • Will be buying again.

    Products are the same as my insurance and I pay a fortune for at a reasonable cost.
    Written by Rhonda, -2014-02-24

  • Replacement Reservoir

    The new reservoir fits perfectly. I really like the flip latch over the old slide latch. Now I don't have to press down on the lid to slide the latch. The seals line up perfectly and it no longer leaks. I should have gotten this replacement years ago.
    Written by R. Pein, -2013-05-16

  • Much improved over the old design

    This new chamber has an improved design that fits better and is easy to clean. The new end clip is superior to the old sliding clip that was failing. I am very pleased.
    Written by DreamChick, -2012-12-29

  • It works.

    Not much to really comment on a humidifier, it fits my machine just like the old design.
    Written by Nadine, -2012-10-04

  • Improvement

    I haven't had to buy a new water chamber in a while. This design is an improvement over the older one. It doesn't have a rubber seal which will start to wear out and leak over time.
    Written by Alice Dixon, -2012-03-27

  • Great Product

    Low cost, rapid shipment!
    Written by Ivan, -2012-02-25