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Puritan Bennett

GoodKnight 420SP Travel CPAP Machine

Name: GoodKnight 420SP Travel CPAP Machine
Brand: Puritan Bennett
SKU: Y-GK420SP
Price: 394.75 USD
Availability: Discontinued
Rating: 4.8 (13 reviews)

BY Puritan Bennett Item #Y-GK420SP

13 Reviews

This item has been discontinued by the manufacturer.

Check out the newer model

ResMed AirSense™ 10 AutoSet™ CPAP Machine With HumidAir (Card-to-Cloud Version)

878 Reviews

$913.00 $1199.99 SHOP NOW

Need replacement parts and accessories? Shop now

Click image to expand

13 Reviews

This item has been discontinued by the manufacturer.

Check out the newer model

ResMed AirSense™ 10 AutoSet™ CPAP Machine With HumidAir (Card-to-Cloud Version)

878 Reviews

$913.00 $1199.99 SHOP NOW

Need replacement parts and accessories? Shop now

GoodKnight 420SP Travel CPAP Machine Overview

The 420SP is the size of two VHS video cassettes stacked on top of each other. It is the lightest CPAP on the market. Best of all, it is built to last and backed by a two year manufacturer warranty which means that although it is a travel CPAP, you can plan on this little guy lasting as long as any other CPAP on the market. It is a great machine.

This model is no longer available. A suitable replacement for this single-pressure travel machine is the Z2 Standard Travel CPAP Machine. The Z2 is small, compact and lightweight— fits in the palm of your hand. It's also 29% quieter than the previous version, making it an ideal travel companion.

Features

Specifications

Important Tips

Replacement Parts

Power

Videos

FAQs

Customer Reviews

This is a standard CPAP machine which delivers one level of pressure during inhalation and exhalation. It suits most patients with obstructive sleep apnea.

The Puritan Bennett GoodKnight 420SP CPAP includes the following features:

Smallest, lightest CPAP on the market.
SilverLining Data Management software option to download compliance and session data. (Software is sold separately.)
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.)
Automatic altitude compensation adjustment.
Direct DC operation without the need for a DC/AC inverter, just a cable and adapter which are sold separately.
Automatic leak compensation.
Two washable, reusable pollen filters are included; optional ultra-fine filters are available.
Two year manufacturer warranty against defects.
Does not have the pressure line, which is an upgrade from the 420s.

This small CPAP has been very popular because of the size and weight, especially as a second machine for travelers, but it can certainly be your 'every night' machine with as long a life expectancy as any other CPAP. It is a great product.

The GoodKnight 420SP CPAP can be used with a separate passover or heated humidifier. We offer it packaged with a heated humidifier at a reduced price elsewhere on our site.

CPAP 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 420 line of machines can experience power problems when used with a Full Face Mask at pressures exceeding 15 CM/H2o. If you wish to use this mask configuration, please consider a different machine.

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.

User Manual:

The user manual included with this machine can be viewed and downloaded here: Goodknight 420sp Machine.

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

The Goodknight Series operate 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 the power needed.

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.

GoodKnight Series DC Power Cord with Cigarette Lighter Adapter

The Goodknight series 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. Using a Puritan Bennett, 12volt DC Power Cord, the GoodKnight 420 Series can be powered by plugging into a cigarette lighter plug. This is ideal for traveling by car, boat, or recreational vehicle that is equipped with a cigarette lighter plug.

Freedom Travel Battery

The Freedom Travel CPAP Battery is currently the best battery on the market to power your GoodKnight Series machine. It makes a native connection without needing to buy an inverter or extra equipment to make it work. The Freedom is the next generation of the C-100 travel battery and is designed to work well with your GoodKnight Series Machine.

CPAP.com Battery Kit for GoodKnight 420 Series Machines

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 GoodKnight 420 Series 12 Volt DC Power Cord.

Respironics Battery Kit for GoodKnight 420 Series

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 GoodKnight 420 Series 12 Volt DC Power Cord.

How can I compare different machines?

We work very hard to provide many different ways for our customers to compare products. Here are the machine product guides we have created and maintain:

CPAP Machine Comparison Guide. This guide stacks up every CPAP machine we sell, feature by feature. If you don't know the meaning of a feature, click the question mark for a definition. The links below will take you to the most popular CPAPs, or all CPAP machines we sell.

Compare Most Popular CPAP Machines

Compare All CPAP Machines
Auto Adjusting Machine (APAP) Comparison Guide. This guide stacks up every APAP machine we sell, feature by feature. If you don't know the meaning of a feature, click the question mark for a definition. The links below will take you to the most popular APAPs, or all APAP machines we sell.

Compare Most Popular APAP Machines

Compare All APAP Machines
BiPAP, VPAP and BiLevel Comparison Guide. This guide stacks up every BiPAP machine we sell, feature by feature. If you don't know the meaning of a feature, click the question mark for a definition. The links below will take you to the most popular BiPAPs, or all BiPAP machines we sell.

Compare Most Popular BiPAP Machines

Compare All BiPAP Machines

Which CPAP masks work on which machines?

Any mask will work with any machine, with one important exception. The ResMed AirMini is only compatible with certain ResMed CPAP masks. Compatible masks for the AirMini are as follows:

ResMed AirFit™ N20 Nasal Mask
ResMed AirFit™ F20 Full Face
ResMed AirTouch™ F20 Full Face
ResMed AirFit™ P10 Nasal Pillow

When considering another CPAP, APAP or BiPAP machine from ResMed or any other manufacturer, mask compatibility extends to all brands. The AirMini uses non-standard tubing to connect the machine to the mask, and is the primary reason why other masks won't work with the AirMini. Despite this issue, many of our customers consider the AirMini to be an excellent machine.

How do I choose the machine that is right for me?

We provide our customers with many tools to make informed decisions about their machine purchases. Options include:

Calling a CPAP Expert Toll Free. 800.356.5221.
Comparison Charts. These charts compare available machines, feature by feature. If you don't know the meaning of a feature, click on the question mark for a definition. Click on the image or name of the product for more detailed product information, pictures and resources.

Travel CPAP Comparison Chart

APAP Comparison Chart

BiPAP Comparison Chart
Browse Our Machine Product Categories. These categories show each machine our company offers, ranked by popularity. Popularity is determined by a mix of sales data and our in house opinion of the quality of the machine based on our experience and customer feedback. The best products float to the top of our categories.

CPAP Machine Category

APAP (Auto Adjusting) Machine Category

BiPAP (Two Pressure) Machine Category

What comes with my machine?

Machines come with a six foot hose, power cord, at least one filter, and manuals. Most manufacturers include a carrying case which is designed specifically for their equipment. CPAP, APAP, and BiPAP machines do not come with a delivery system or mask. CPAP masks must be purchased separately.

To see the list of what specifically comes with each machine, you can Browse for a machine. Then on the product page, click the "Specs" tab to see a full list of what comes with the machine.

Are prescriptions required for mask, machine, humidifier, and EPAP purchases?

Yes. Federal law requires we have a valid prescription on file before we ship your mask, machine, humidifier, or EPAP therapy, including Provent and Bongo RX. You will also need a prescription to purchase the Nightbalance POSA device.

We provide many easy ways to get your prescription:

We can request your prescription for you! When you checkout, just let us know you would like us to request your prescription, or you can log into your account to have us request your prescription.
Fax your prescription to our toll-free fax number: 866.353.2727, or our international fax number: 713.541.7377
Email your prescription to cpap@cpap.com
Upload your prescription in your account, under the Prescriptions Section
Ask your doctor to fill out our prescription form. We have both a standard prescription form and an EPAP prescription form.

For more information on prescriptions, please see our Prescription Section of the Learning Center.

What are the CPAP, BiPAP, Sleep Apnea, and Oxygen related HCPCS, CPT or billing codes?

A7034 is Nasal Mask
A7034 is Nasal Pillow Mask
A7030 is Full Face Mask
A7027 is Hybrid Mask
A7044 is Oral Interface Mask (Oracle)
A7035 is Headgear for Mask - Any Style
A7036 is Chinstrap - Any Style
A7032 is Replacement Nasal Mask Cushion
A7033 is Replacement Nasal pillows
A7031 is Replacement Full Face Mask Cushion
A7028 is Replacement Hybrid Mask Cushion
A7029 is Replacement Hybrid Mask Nasal Pillow
A7046 is Replacement Humidifier Chamber
A7037 is Tubing / Hose - Long & Short Tubes
A4604 is Heated Tubing
A7038 is Disposable Filter (White / Paper)
A7039 is Washable Filter (Gross Particle / Foam/ Black)
E0601 NU is CPAP Purchase
E0601 NU is APAP Purchase
E0470 NU is BiPAP Purchase
E0470 NU is BiPAP Auto Purchase
E0471 NU is BiPAP ST Purchase
E0471 NU is BiPAP Auto SV Purchase
E0562 NU is Heated CPAP Humidifier
E0561 NU is Passover or Cool CPAP Humidifier
E0601 RR is CPAP Rental
E0601 NU is APAP Rental
E0470 RR is BiPAP Rental
E0470 RR is BiPAP Auto Rental
E0471 RR is BiPAP ST Rental
E0471 RR is BiPAP Auto SV Rental
E1356 is Oxygen Concentrator Battery
E1357 is Oxygen Concentrator Battery Charger
E1358 is Oxygen Concentrator DC Cable
E1390 is Portable Oxygen Concentrator

E1399 is Miscellaneous and is used for other CPAP and Oxygen items.

What maintenance is required on machines?

The only care a CPAP, APAP or BiPAP machine requires is to clean or change the filters at the air intake. This keeps the internal parts from accumulating dust. Fine paper filters should be changed out every 30 days, or when they appear soiled. Foam washable filters should be rinsed with clear running water once a week, allowed to air dry, and reinserted.

Here are some other suggested actions to care for your machine:

Keep the area around your machine clean by removing any dust from the area to improve the air quality delivered to your machine and to you.
Keep the air intake of the machine unblocked. Curtains, bedding, and papers can easily block the air intake of your machine, reducing the airflow.
If a humidifier is used with your therapy, do not pick up the machine with the humidifier attached. With most machines it is easy to spill water from the humidifier chamber into the machine causing damage. Manufacturer warranties are voided by water damage to the machine. To avoid this, remove the chamber from the humidifier and then remove the humidifier from the machine rather than transporting them together.
If a humidifier is used, empty the water from the chamber every morning. Accidents happen. If a family pet or family member moves the machine and humidifier with water in the chamber it is more likely that water could be spilled into your machine. Water damage to a machine voids the manufacturer warranty.

What does CPAP therapy do?

CPAP therapy provides a constant airflow which holds the airway open so that uninterrupted breathing is maintained during sleep. It is traditionally provided through a nasal mask that seals around the nose to maintain the pressure level.

Do all CPAPs use filters?

Yes, all CPAPs use at least one filter that is usually a type of foam material and washable. Some CPAPs offer finer filtration with the addition of a disposable paper filter.

Cleaning and changing filters is the only maintenance required for a CPAP machine.

The filters are located at the back of the machine at the air intake.

What is exhalation relief?

Exhalation relief is a comfort feature which reduces the air flow at the time of exhalation, making the breathing process more natural.

The following are the different types of exhalation relief names by manufacturer.

Philips Respironics = C-Flex, C-Flex+, A-Flex and Bi-Flex
Resmed = EPR (Expiratory Pressure Relief)
3B Medical = RESlex
Apex Medical = PVA (Pressure Variation Algorithm) Pressure Relief
Curative Medical = EUT (Expiratory Unloading Technology)
DeVilbiss = SmartFlex
Fisher & Paykel = SensAwake Technology
Human Design Medical = Z-Breathe
Somnetics = EZEX

Here are some machines with an exhalation relief feature:

Transcend Auto miniCPAP™ Machine with EZEX
PR System One REMStar 60 Series Auto with Bluetooth
AirSense™ 10 AutoSet CPAP Machine with HumidAir™ Heated Humidifier
+ See More

Overall Rating

4.8 13 Reviews

Verified Customer

Verified purchase

2022-09-15

Great CPAP machine!

Works as needed! Perfect fit for night stand! Still working after 8 years! I wish it was still available!! Very happy!!

- Verified Customer

Verified Customer

Verified purchase

2009-01-17

great machine- very quiet

- Verified Customer

Verified Customer

Verified purchase

2008-08-19

Works Great :-)

This little machine is great! It's very quiet, the ramp feature is really nice and it really is compact. I was also very happy with the bag that comes with it. It's sturdy and pretty well padded. I recommend this machine.

- Verified Customer

Verified Customer

Verified purchase

2008-04-25

GoodKnight 420sp cpap

I'm very happy with the new cpap machine,much smaller than my last cpap and works better also.

- Verified Customer

Verified Customer

Verified purchase

2007-10-16

GoodKnight 420SP CPAP with bag, hose and manuals

GoodKnight 420SP CPAP is a reliable device

- Verified Customer

Verified Customer

Verified purchase

2007-08-28

The first two nights were difficult getting accustomed to this mask, oxygen in my face and trying to breathe normally. I sleep on my stomach and am learning to sleep on my back. I think it will get better sleeping through the night. My wife, says she is doing well and is now sleeping through the night. The CPAP & humidifier are great. I recommend the humidifier when purchasing the CPAP.

- Verified Customer

Verified Customer

Verified purchase

2007-06-29

Provide better description.

I purchased the GoodNight 420SP as a travel back up for the CPAP machine I regularly use, a GoodNight 420S. The online description did not make clear the difference between the GoodNight 420S and the 420SP. In fact when you clicked on the word 420S you were directed to purchase the 420SP. The 420S senses pressure in the mask, the 420SP senses pressure at the machine outlet. The 420SP has a dummy peg for attaching the sensor tube of breathing tubes that have the sensor tube. Thus the photographs look identical. I now have used both and do not notice any subjective difference.

- Verified Customer

Verified Customer

Verified purchase

2007-06-17

cpap 420 and all supplies

I am well pleased with all that I purchased. Fast service and great help Thanks again

- Verified Customer

Verified Customer

Verified purchase

2007-04-06

GoodKnight 420SP

The GoodKnight 420SP is working like a champ. The bigest advantage I see in this CPAP over the others is the size and sound. It uses only a small amount of space on the bedside table compared to other units. It additionally is so quiet, you barely know it is in the room with you. It is very portable and also has a two year guarantee just like the bigger machines. I ordered mine with the humidifier which is also working like a champ.

- Verified Customer

Verified Customer

Verified purchase

2007-03-18

Reviews on GoodKnight 420SP

I read a LOT of reviews on this product and many others and almost didn't buy this one because of the reviews I read complaining of the noise from this machine. I asked customer service about this issue and was assured of its relative quiet. They were right. I can compare this with my Respironics that I have used for years and this is quieter. My guess is the reviewers that didn't like the noise maybe hadn't had CPAP before. This is an extremely quiet unit. I kept my Respironics on the floor under the bed because of size and noise. This unit sits right on my bedside tabletop. I couldn't be happier. I am also pleased with CPAP.com shipping both user and tech manuals. One sure doesn't get that with local DME suppliers.

- Verified Customer

Verified Customer

Verified purchase

2007-03-02

Great Machine. Light weight, even with the humidifier. Combined with the Silverlining software, tracking compliance and performance is a wonderful utility.

- Verified Customer

Verified Customer

Verified purchase

2006-11-16

Quiet but powerful. An excellent product.

- Verified Customer

1 - 12 of 13 Reviews

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Product image for GoodKnight 420SP Travel CPAP Machine

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GoodKnight 420SP Travel CPAP Machine

This item has been discontinued by the manufacturer.

Check out the newer model

This item has been discontinued by the manufacturer.

Check out the newer model

GoodKnight 420SP Travel CPAP Machine Overview

Features

Specifications

Important Tips

Replacement Parts

Power

Videos

FAQs

Customer Reviews

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