If your machine is called a Dream Station and is manufactured by Respironics (a subsidiary of Philips), it is likely affected by the recall. All other manufacturers are not affected by this recall issue.
A variety of devices are potentially affected, including: several Continuous Positive Airway Pressure (CPAP – including DreamStation), Auto-CPAP, Bi-Level Positive Airway Pressure (Bi-Level PAP) devices, Adaptive Servo-ventilators (ASV), Average volume-assured pressure support devices (AVAPS), OmniLab and Trilogy ventilators. For a detailed list of affected and unaffected devices, please refer to the following websites:
https://www.philips.ca/healthcare/e/sleep/communications/src-update#section_2
https://healthycanadians.gc.ca/recall-alert-rappel-avis/hc-sc/2021/75887r-eng.php
https://healthycanadians.gc.ca/recall-alert-rappel-avis/hc-sc/2021/75889r-eng.php
According to information from their websites, devices from other manufacturers widely used in Canada (i.e., ResMed, Fisher and Paykel) are not affected by the recall, as different materials are used in these devices:
https://www.resmed.com/en-us/other-manufacturer-recall-2021/
https://www.fphcare.com/en-ca/our-company/about-us/cpap-notice/