WATSCO INC

Evaluation of Disclosure Controls and Procedures

We maintain disclosure controls and procedures (as defined in Rule 13a-15(e) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”)) that are, among other things, designed to ensure that information required to be disclosed by us under the Exchange Act is accumulated and communicated to management, including our Chief Executive Officer (“CEO”), Executive Vice President (“EVP”), and Chief Financial Officer (“CFO”), to allow for timely decisions regarding required disclosure and appropriate SEC filings.

Our management, with the participation of our CEO, EVP, and CFO, evaluated the effectiveness of our disclosure controls and procedures as of the end of the period covered by this report, and, based on that evaluation, our CEO, EVP, and CFO concluded that our disclosure controls and procedures were effective, at a reasonable assurance level, at and as of such date.

Changes in Internal Control over Financial Reporting

We continuously seek to improve the efficiency and effectiveness of our internal control over financial reporting. This results in refinements to processes throughout the Company. However, there were no changes in our internal control over financial reporting (as such term is defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) during the quarter ended March 31, 2026, that materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.