Hayward (HAYW) 10-Q 2023 Q2 Quarterly report

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 Hayward Holdings, Inc. (the “Company”) for the period ended July 1, 2023, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), the undersigned, Kevin Holleran, President and Chief Executive Officer of the Company, hereby certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to the best of his knowledge:

(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.

Date: August 2, 2023                        By: /s/ Kevin Holleran
                                Kevin Holleran
                                President and Chief Executive Officer
                                (Principal Executive Officer)