Call Us! - Toll Free: 888-346-2727- Rx Fax: 1-888-469-2555
Call Us! - Toll Free: 888-346-2727- Rx Fax: 1-888-469-2555

Puritan Bennett GoodKnight H2O Heated Humidifier (base only - no chamber)

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If you are purchasing a new CPAP, Auto CPAP or BiLevel (BiPAP) machine, humidifier or an oxygen concentrator, then federal law requires that we receive a copy of a prescription written by your doctor. A sleep study report does not qualify as a prescription.  Also, the purchase of complete CPAP masks does require a prescription.  (*** Note that the component parts that make up the mask DO NOT require a prescription! ***)
The prescription must state that it is for CPAP therapy and at what pressure your machine should be set. If you are purchasing a standard CPAP machine (one that operates at a constant pressure), then the prescription must show one pressure setting, which is generally a number between 4 and 20 and measured in cm of H2O. If you are purchasing an Auto CPAP machine, then your prescription must state two different pressures: A low (minimum) pressure setting and a high (maximum) pressure setting. If you are purchasing a BiLevel machine, then your prescription must state two pressure settings: An inspiratory (IPAP) setting and an expiratory (EPAP) setting.  If you are purchasing an Oxygen Concentrator, the prescription should have the flow rate stated in Liters per minute. 
Prescriptions can be faxed to us at 888-469-2555, or we can accept a scanned copy of your prescription by emailing it to us at [email protected].

Please note that orders for machines, concentrators, or complete masks will NOT be shipped until we receive a copy of your prescription!

Puritan Bennett GoodKnight H2O Heated Humidifier (base only - no chamber)

Part ID:


Out of Stock
Avg Retail Price:$119.99
Lowest price on the web - Guaranteed!

Add the comfort of integrated, heated humidification to your travel-friendly Puritan Bennett 420G CPAP machine for a bargain price.

With the GoodKnight H2O Integrated Heated Humidifier Puritan Bennett offers a mist of relief for people experiencing upper airway dryness during CPAP or BiPAP therapy.
Designed for use with GoodKnight 420 Series CPAP systems and GoodKnight 425 BiPAP systems, the GoodKnight H2O Heated Humidifier increases air humidity, to reduce dryness in the nose and throat which is often associated with CPAP and BiPAP therapy.
In addition, the H2O Heated Humidifier features a small footprint that fits neatly beneath all GoodKnight CPAPs and BiPAPs, creating the smallest, lightest CPAPs and BiPAPs with Heated Humidification on the market.

Product Features:

  • Compact water chamber holds 350 mL of water, yet the efficient performance of the humidifier allows it to last the night.
  • HumidControl feature ensures a consistent temperature difference between water and ambient air to minimize condensation in the tubing and keep humidification level constant throughout the night.
  • Space-saving design adds only 3 inches to length of any GoodKnight 420/425 sleep therapy device.
  • Features rotary button that allows patients to adjust heating level.
  • Durable construction
  • 2 Year Manufacturer's Warranty


  • Dimensions: 6.7" x 3.7" x 11" (170mm x 95mm x 280mm)
  • Weight: 1.76lb (when empty)
  • Usable volume of the water chamber: 350mL
  • Input voltage: 100 VAC (+/- 15%), 120 VAC (+/- 10%/-20%), 230 VAC (+/- 10%), 50/60 Hz (Power supply cord adaptable in accordance with the country)
  • AC power cord supplies power to humidifier only; sleep therapy device has separate power cord.

What's in the Box:

  • GoodKnight H2O Heated Humidifier & Chamber
  • AC Power Supply Cable
  • Connection Adapter Grommet
  • Humidifier Chamber Separation Key
  • Printed User Manuals

5 Stars
GOod Knight humidier
I LOVE it!!! no more dry throat, no more dry nasal passages! I've had one before and was determined to find someone that still sold them, I love the quality of the product and it was shipped so quickly. Thank you so much!
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Reviewed by:  from Orlando. on 5/1/2012
5 Stars
Good product. My Cpap machine and accessories have been discontinued - so I ordered an extra humidifer for backkup. BestCPAPprice is really the hero here, they have done nothing but assist and help find these parts and gone the extra step in service. They have won my vote and I will buy from if at all possible. Thank you BestCPAPprice. M. Small
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Reviewed by:  from Fort Smith, Arkansas. on 4/12/2012
5 Stars
Very responsive service and delivered as scheduled.
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Reviewed by:  from Englewood, Ohio. on 3/18/2012
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