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        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000105016</identifier>
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        <period>
            <startDate>2026-06-03</startDate>
            <endDate>2026-06-03</endDate>
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    <context id="offrl_1">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000105016</identifier>
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            <startDate>2026-06-03</startDate>
            <endDate>2026-06-03</endDate>
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    <unit id="USD">
        <measure>iso4217:USD</measure>
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    <unit id="pure">
        <measure>pure</measure>
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    <unit id="Shares">
        <measure>shares</measure>
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    <ffd:FormTp contextRef="rc" id="ixv-345">S-3</ffd:FormTp>
    <ffd:SubmissnTp contextRef="rc" id="ixv-346">424B7</ffd:SubmissnTp>
    <ffd:FeeExhibitTp contextRef="rc" id="ixv-347">EX-FILING FEES</ffd:FeeExhibitTp>
    <ffd:RegnFileNb contextRef="rc" id="ixv-348">333-282975</ffd:RegnFileNb>
    <dei:EntityCentralIndexKey contextRef="rc" id="ixv-349">0000105016</dei:EntityCentralIndexKey>
    <dei:EntityRegistrantName contextRef="rc" id="ixv-350">WATSCO INC</dei:EntityRegistrantName>
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      contextRef="offrl_1"
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      contextRef="offrl_1"
      decimals="2"
      id="ixv-388"
      unitRef="USD">25812.92</ffd:FeeAmt>
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    <ffd:OfferingNote contextRef="offrl_1" id="ixv-394">(1) This prospectus supplement relates to the offer and resale or other distribution by the selling shareholders identified herein of up to 517,884 shares of Common stock, $0.50 par value per share ("Common stock"), of Watsco, Inc., a Florida corporation (the "Registrant"). In accordance with Rule 416 under the Securities Act of 1933, as amended (the "Securities Act"), the Registrant's Registration Statement on Form S-3ASR (File No. 333-282975) (the "Registration Statement") shall be deemed to cover any additional shares of Common stock to be offered or issued from stock splits, stock dividends, recapitalizations, or similar transactions with respect to the Common stock being registered. (2) Estimated solely for purposes of calculating the registration fee in accordance with Rules 457(c) of the Securities Act and based upon the average of the high and low sales prices of a share of Common stock as reported on the New York Stock Exchange on June 1, 2026. (3) Calculated in accordance with Rules 456(b) and 457(r) under the Securities Act. Represents payment herewith of registration fees previously deferred in connection with the Registration Statement.</ffd:OfferingNote>
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