Exhibit 31.1

# Mestek, Inc.

260 North Elm StreetWestfield,
Massachusetts 01085

(Certification
Issued Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002)

I, John E. Reed, Chief Executive
Officer of Mestek, Inc., certify that:

|1. | I have reviewed this report on Form 10-Q for the quarterly period ended
          September 30, 2003 of Mestek, Inc. (the report).
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|2. | Based on my knowledge, this report does not contain any untrue statement of a
          material fact or omit to state a material fact necessary to make the statements
          made, in light of the circumstances under which such statements were made, not
          misleading with respect to the period covered by this report;
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|3. | Based on my knowledge, the financial statements, and other financial information
          included in this report, fairly present in all material respects the financial
          condition, results of operations and cash flows of the registrant as of, and
          for, the periods presented in this report;
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|4. | The registrants other certifying officer(s) and I are responsible for
          establishing and maintaining disclosure controls and procedures (as defined in
          Exchange Act Rules 13a-15(e) and 15d-15(d) for the registrant and we have:
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|a) |  | Designed such disclosure controls and procedures, or caused such disclosure
               controls and procedures to be designed under our supervision, to ensure that
               material information relating to the registrant, including its consolidated
               subsidiaries, is made known to us by others within those entities, particularly
               during the period in which this report is being prepared;
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|b) | b) Evaluated the effectiveness of the registrants disclosure controls and
          procedures and presented in this report our conclusions about the effectiveness
          of the disclosure controls and procedures, as of the end of the period covered
          by this report based on such evaluation; and
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|c) | Disclosed in this report any change in the registrants internal control
          over financial reporting that occurred during the registrants most recent
          fiscal quarter that has materially affected, or is reasonably likely to
          materially affect, the Registrants internal control over financial
          reporting; and
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|5. | The registrants other certifying officer(s) and I have disclosed, based on
          our most recent evaluation of internal control over financial reporting, to the
          registrants auditors and the audit committee of the registrants
          board of directors (or persons performing the equivalent functions):
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|a) |  | All significant deficiencies and material weaknesses in the design or operation
               of internal control over financial reporting which are reasonably likely to
               affect the registrants ability to record, process, summarize and report
               financial information; and
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|b) |  | Any fraud, whether or not material, that involves management or other employees
               who have a significant role in the registrants internal control over
               financial reporting.
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Date: November 17, 2003

John
E. ReedChief Executive Officer Mestek, Inc.