Exhibit 32.1

                            CERTIFICATION PURSUANT TO
                             18 U.S.C. SECTION 1350
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report on Form 10-Q of York International
Corporation (the "Company") for the quarter ended September 30, 2004 as filed
with the Securities and Exchange Commission on the date hereof (the "Report"),
the undersigned C. David Myers, President and Chief Executive Officer of York
International Corporation, and M. David Kornblatt, Vice President and Chief
Financial Officer of York International Corporation, certify, pursuant to 18
U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley
Act of 2002, that:

      (1)   the Report fully complies with the requirements of Section 13(a) or
            15(d) of the Securities Exchange Act of 1934; and

      (2)   the information contained in the Report fairly presents, in all
            material respects, the financial condition and results of operations
            of the Company.

Dated: November 9, 2004

                                  /s/ C. David Myers
                                  -------------------------------------
                                  C. David Myers,
                                  President and Chief Executive Officer

                                  /s/ M. David Kornblatt
                                  -------------------------------------
                                  M. David Kornblatt,
                                  Vice President and Chief Financial Officer

A signed original of this written statement required by Section 906, or other
document authenticating, acknowledging, or otherwise adopting the signature that
appears in typed form within the electronic version of this written statement
required by Section 906, has been provided to York International Corporation and
will be retained by York International Corporation and furnished to the
Securities and Exchange Commission or its staff upon request.

The foregoing certification is being furnished solely pursuant to Section 906 of
the Sarbanes-Oxley Act of 2002 (Section 1350 of Chapter 63 of Title 18 of the
United States Code) and is not being filed as part of the Report or as a
separate disclosure document.