UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of Report (date of earliest event reported) June 25, 2014

WATSCO, INC.

(Exact Name of Registrant as Specified in Its Charter)

Florida

(State or Other Jurisdiction of Incorporation)

2665 South Bayshore Drive, Suite 901

Miami, Florida 33133

(Address of Principal Executive Offices, Including Zip Code)

(305) 714-4100

(Registrant’s Telephone Number, Including Area Code)

N/A

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

Item 1.01. Entry into a Material Definitive Agreement

Item 2.03. Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Company.

As previously reported on April 27, 2012, Watsco, Inc., a Florida corporation (the “Company”), and Watsco Canada, Inc., a corporation organized under the laws of New Brunswick, Canada, and a wholly owned subsidiary of the Company (“Watsco Canada” and, together with the Company, the “Borrowers”), entered into an unsecured, five-year $500,000,000 syndicated credit agreement with nine lenders (the “Lenders”), JPMorgan Chase Bank, N.A. as Administrative Agent (the “Administrative Agent”), Bank of America, N.A. and Wells Fargo Bank, National Association as Co-Syndication Agents, and U.S. Bank National Association as Documentation Agent, as amended (as amended, the “Credit Facility”).

On June 25, 2014, the Borrowers, the Administrative Agent and the Lenders entered into Amendment No. 3 to the Credit Facility (the “Third Amendment”), which increased the borrowing capacity under the Credit Facility from $500,000,000 to $600,000,000, extended the maturity date from July 1, 2018 to July 1, 2019, increased the swingline subfacility from $65,000,000 to $90,000,000 and modified certain definitions. All other material terms of the Credit Facility remain unmodified and in full force and effect.

The foregoing description of the Third Amendment is only a summary and is qualified in its entirety by reference to the full text of the Third Amendment, which is filed as Exhibit 10.1 to this Current Report on Form 8-K and incorporated herein by reference.

Item 7.01. Regulation FD Disclosure

On June 26, 2014, the Company issued a press release announcing the Third Amendment. A copy of the Company’s press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is hereby incorporated by reference in this Item 7.01.

The information contained in this Item 7.01, including Exhibit 99.1 furnished herewith, shall be deemed “furnished” and not deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any Company filing under the Securities Act of 1933, as amended.

Item 9.01. Financial Statements and Exhibits

(c) Exhibits

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

EXHIBIT INDEX