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GoodKnight 425 Bilevel Machine. Not For Sale

BY Puritan Bennett  |  Item #Y-GK425
(11) Read Reviews

This item has been discontinued by the manufacturer.

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Item # Y-GK425

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GoodKnight 425 Bilevel Machine

This is a bilevel machine which differs from a CPAP in that it switches back and forth between two pressure levels, one higher and one lower, rather than providing one continuous pressure level. The pressure upon inhalation is higher to hold the airway open, but as the user exhales, the pressure drops to a preset lower level. A bilevel machine responds well to people with very high CPAP pressure needs, weak chest wall muscles, lung disease or other health problems that keep them from being able to exhale against a CPAP pressure.

This product is no longer available. A suitable alternative to this device would be the AirCurve 10 VA BiLevel Machine. This auto-adjusting BiPAP automatically chooses the inhale and exhale pressures for you so you don't have to manually set either pressure. It also comes with a built-in heated humidifier for optimal therapy comfort.

GoodKnight 425 Bilevel Machine

This is a bilevel machine which differs from a CPAP in that it switches back and forth between two pressure levels, one higher and one lower, rather than providing one continuous pressure level. The pressure upon inhalation is higher to hold the airway open, but as the user exhales, the pressure drops to a preset lower level. A bilevel machine responds well to people with very high CPAP pressure needs, weak chest wall muscles, lung disease or other health problems that keep them from being able to exhale against a CPAP pressure.

This product is no longer available. A suitable alternative to this device would be the AirCurve 10 VA BiLevel Machine. This auto-adjusting BiPAP automatically chooses the inhale and exhale pressures for you so you don't have to manually set either pressure. It also comes with a built-in heated humidifier for optimal therapy comfort.

Learn More About Your New Machine

Bilevel is the generic term to describe these machines. BiPAP, for Bilevel Positive Airway Pressure, is registered with Respironics; ResMed uses VPAP for Variable Positive Airway Pressure.

The Puritan Bennett GoodKnight 425 Bilevel machine includes the following features:
  • Smallest, lightest Bilevel, BiPAP or VPAP on the market.
  • SilverLining 3.10 Data Management software option to download compliance and session data.
  • International power supply to operate on any AC current from 110 to 240 without adjustment to the machine. (An adapter may be needed to plug the CPAP into a wall outlet outside the US.)
  • Direct DC operation without the need for a DC/AC inverter, just a cable and adapter which are sold separately on our site.
  • Automatic altitude compensation adjustment.
  • Two washable, reusable pollen filters are included; optional ultra-fine filters are available.
  • 2 year manufacturer warranty against defects.

Sound Level: 31 dB

Machine Dimensions: 5.6 in L x 2.9 in W x 7.7 in H

Machine Weight: 1.6

Machine Warranty: 2 Years

Default Machine Settings: 3-25cm H2O

Humidification Available: Yes

Humidification Type: Integrated

Ramp Mode: Yes

DC Capable: Yes

Battery Option: Yes

Auto Altitude Adjustment: Yes

Good For: [object Object]

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This is a great bilevel machine, just as small and lightweight as the 420 series of CPAPs. Puritan Bennett released the component heated humidifier that will integrate with this bilevel. (The price of this unit does not include the humidifier.)

Bilevel machines come with a six foot hose, a travel bag and manuals. Masks are not included and must be purchased separately. We will be happy to help you with sizing and offer suggestions on current popular masks.

The 12 volt jack on this machine is not the same size as the 420 series cpap machines. Use the Respironics "12volt DC Power Cord (to connect CPAP to cigarette lighter socket)" for battery operations. Part # 1001956.

Error Note: If the machine displays an error 7 or "ER 7" this indicates an issue internally with the machine's blower. You can contact the provider of the machine to seek service if it is available, or the machine may need to be replaced.

cpaptalk.com 425 Bi-Level Interview

Manufacturer Warranty
This machine comes with a 2 Year Manufacturer Warranty. CPAP.com will work with the manufacturer on your behalf if the machine needs repairs. Please follow these steps:

  • Contact us at cpap@cpap.com or 1-800-356-5221 to receive an RMA (Return Merchandise Authorization) Number before returning the equipment
  • Include a note with the machine describing the issue you are experiencing, along with your full contact information to include a return shipping address and the RMA number provided to you
  • Ship only the defective items to CPAP.com at 13235 N Promenade Blvd Stafford, TX 77477
  • Do not return accessory items such as the carry bag, hose or power cords
  • Email updates will be sent to keep you informed as the machine moves through the warranty process
  • CPAP.com will contact the manufacturer on your behalf and handle all shipping between us and the manufacturer
  • The repaired or replaced unit will be returned to you. Shipping charges may apply.

Please note: The manufacturer warranty is voided by water damage or misuse of the machine.

360
Universal Power

This system operates automatically between 110v and 240v AC. When traveling either inside or outside the USA, there are no switches to switch or fuses to change. The machine will automatically sense what voltage is needed and set itself to run on that power.

The user will need to adapt the plug that goes into the wall to fit the style of outlet socket that is being used. This is simply done with a Power Adapter Plug kit. This is the same type of plug adapter that would be used with a hair dryer or an electric shaver. World Traveler Power Adapter Plugs.

Universal 12 Volt DC Power Cord

This machine come equipped with a DC plug on the back of the unit. This allows the user to connect the CPAP to an external DC battery source. The IntelliPAP can be powered by plugging the 12volt DC Power Cord into a cigarette lighter plug. This is ideal for traveling by car, boat, or recreational vehicle that is equipped with a cigarette lighter plug.

CPAP.com Battery Kit with Universal 12 Volt DC Cable

The 2.5 lb CPAP.com Battery Pack is surprisingly small and lightweight. The lithium ion battery can be recharged at any discharge level without losing charge time due to battery memory loss. This battery has been approved by the United Nations and Department of Transportation as tested safe for travel. This battery kit comes with the CPAP.com battery and the 12 Volt DC Power Cord.

Respironics Battery Kit with Universal 12 Volt DC Cable

This portable battery pack is an external lead acid battery that is the ultimate in power, portability and convenience. This battery kit comes with the Respironics battery and the 12 Volt DC Power Cord (connects CPAP to cigarette lighter socket).

CPAP.com 100% Price Protection Guarantee

When you shop with us, we want you to be confident that you are receiving the best available price. If this items goes on sale or you spot an online or retail competitor with a lower price within seven days of your purchase, let us know, and we will credit you the difference.

"Super helpful, fast shipping, friendly assistance, great selection, I love this company."

- Verified Customer, 10/25/22

★★★★★

(11)  

Read Reviews

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Manufacturer
Puritan Bennett
ResMed
ResMed
Warranty
2 Years
2 Years
Sound Level
31 dB
26.6 dBA
Quiet
-
Yes
-

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★★★★★

BiLevel Travelling Machine

Verified purchase | Apr. 12, 2009 | Verified CPAP.com Customer
I've got a very convenient BiLevel machine at home, but its's quite heavy. So I bought the GoodKnight 425 - This machine is unbeatable for travilling use and I'm very comfortable with that piece.
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★★★★★

Verified purchase | Mar. 23, 2009 | Verified CPAP.com Customer
This is a welcome change from my previous machine which was bulky and noisy. The Goodknight 425 is so quiet you can barely hear the machine when it is on. And it is so light and compact, it is very easy and very convenient to bring it anywhere.
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(0)
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★★★★★

Verified purchase | Feb. 04, 2009 | Verified CPAP.com Customer
Extremely quiet, works very well.
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(0)
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★★★★★

Goodknight 425 Bilevel Machine

Verified purchase | Nov. 04, 2008 | Verified CPAP.com Customer
This unit delivered everything I had hoped it would, and I am very pleased with the results. There is a bit more noise when exhaling than with my bedside unit, but not a problem once you use it for a night or two. Also, the control buttons are a little more difficult to press than I am accustomed to, but not too difficult. I liked the lightness of the unit when travelling, and will consider getting the humidifier as well. The unit appears to be excellent in every other way.
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★★★★★

Small but perfectly formed

Verified purchase | Nov. 29, 2007 | Verified CPAP.com Customer
BiPAP Goodknight 425 Being in the Uk I receive a free BiPAP machine with service and treatment. Unfortunately this means that they are purchased bulk and tend to be the less portable type of machines. I like to travel and having to carry a heavy BiPAP around is a real chore, paticularly because I do not drive and have to use public transport. The second effect of the Health Service monopoly is that very few BiPAPs are purchased privately so they tend to be expensive, double the price than in the USA. To purchase my Goodknight 425 in the UK would have cost me $1700 and a battery pack $700 so I had to import from America. In fact it would be cheaper for me to fly to the USA from England to buy a machine than to buy one here. From confirmed order to arrival was 4 days, exceptionally speedy, and because it was medical equipment it carries no import duty or sales tax. There was a small amount of administration getting a prescription but that was not to difficult. The machine itself is fantastic, light weight, small and easy to use, both US and UK power covered in the one power pack. Combined with the batery pack and all the leads and tools it weighs less than ten pounds, half the previous weight that I was lugging around. I have used it for two nights now to make sure I can get used to it before I travel and it is fine. Excelent in fact, and so quiet. Once I am fully comfortable and familiar with the machine I will try the battery combination to see how long it lasts with my BiPAP settings and how long it takes to charge. If only I can work out some way of charging the battery by solar power then my stays on remote beaches will happen more often and with a lot less worry.
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★★★★★

Thanks!

Verified purchase | Oct. 28, 2007 | Verified CPAP.com Customer
You guy's are the best! Your service, helpful attitude and professionlisim with empathy makes you the very best in the business! Thanks so much for being there. Look forward to my old one being repaired and returned so I will have back up in the future. Once again, Thank You! Rock
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