PEERLESS MFG. CO. AND SUBSIDIARIES
                                   FORM 10-Q
                     FOR THE PERIOD ENDED DECEMBER 31, 2002


                                                                    Exhibit 99.1


               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 Form 10-Q of Peerless Mfg. Co.. (the "Company") for the
quarter ended December 31, 2002, as filed with the Securities and Exchange
Commission on the date hereof (the "Report"), I, Sherrill Stone, Chief Executive
Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted
pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Report fully
complies with the requirements of Section 13(a) or Section 15(d) of the
Securities Exchange Act of 1934, as amended, and the information contained in
the Report fairly presents, in all material respects, the financial condition
and results of operations of the Company.

                                                         /s/ Sherrill Stone
                                                         ------------------
                                                         Sherrill Stone
                                                         Chief Executive Officer
                                                         Date: February 13, 2003

This certification accompanies this Report pursuant to Section 906 of the
Sarbanes-Oxley Act of 2002 and shall not be deemed filed, except to the extent
required by the Sarbanes-Oxley Act of 2002, by the Company for purposes of
Section 18 of the Securities Exchange Act of 1934, as amended.