Compliance with therapy will be easier than ever when sleep apnea patients discover the small, lightweight and quiet GoodKnight^® 420 CPAP system. At a mere 1.5 pounds, the GoodKnight 420 device is so small it is barely noticeable at the bedside and convenient to pack for travel. A wide pressure range of 4 to 20 cm H₂O and advanced features for patient management make the GoodKnight 420 units equally effective for home or hospital use. Its patient-friendly features include compatibility with the comfortable, nonconfining Breeze SleepGear^™ CPAP Interface System.

The GoodKnight 420 CPAP System is available in three models:


GoodKnight 420G: This entry-level model provides quiet, effective therapy.


GoodKnight 420S: This model records up to 600 sessions of compliance data. It also detects persistent residual apnea, hypopnea and snoring events that occur at set-pressure, allowing appropriate adjustments to therapy.

GoodKnight 420E: This advanced auto-CPAP model records up to 200 sessions of compliance data and includes other features of the 420S model. The auto-CPAP function automatically adapts to airway pressure needs.


GoodKnight 420 CPAP System Comparison Chart

Product Features

• Weighs only 1.5 pounds and measures 2.9" high x 5.6" wide x 7.7" deep.
• Front-panel buttons make setup and monitoring simple for patients and clinicians alike.
• Whisper-quiet operation with fewer metal-to-metal parts.
• Adjustable pressure calibration promotes accurate, reliable operation.
• Durable construction stands up to heavy use, helping to keep costs down.
• Optional SilverLining^® 3 Data Management Software for the GoodKnight 420S and 420E provides compliance information and other patient data in easy-to-format custom reports.
• Indicated for patients 30 kg and over, the GoodKnight 420 system can be used with pediatric and adult patients.

For additional information or to place an order, call Puritan Bennett Customer Service
at 1-800-635-5267.

Note To Patients:
All the devices shown here are prescription products and must be obtained from a licensed homecare provider or physician.  Patients cannot purchase directly from Puritan Bennett.