Exhibit No. 23 Consent of Independent Auditors We consent to the incorporation by reference in the registration Statement (Form S-8 No. 333-16721) pertaining to the Respironics, Inc. Retirement Savings Plan of our report dated December 4, 1998, with respect to the financial statements and schedules of the Respironics, Inc. Retirement Savings Plan included in this Annual Report (Form 11-K) for the year ended June 30, 1998. /s/ Ernst & Young LLP Ernst & Young LLP December 11, 1998