content: <?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
    <headerData>
      <submissionType>144</submissionType>
      <filerInfo>
        <filer>
          <filerCredentials>
            <cik>0001814385</cik>
            <ccc>XXXXXXXX</ccc>
          </filerCredentials>
        </filer>
        <liveTestFlag>LIVE</liveTestFlag>
  
  
      </filerInfo>
    </headerData>
    <formData>
      <issuerInfo>
        <issuerCik>0001782754</issuerCik>
        <issuerName>AZEK Co Inc.</issuerName>
        <secFileNumber>001-39322</secFileNumber>
        <issuerAddress>
          <com:street1>1330 W FULTON STREET, #350</com:street1>
          <com:city>CHICAGO</com:city>
          <com:stateOrCountry>IL</com:stateOrCountry>
          <com:zipCode>60607</com:zipCode>
        </issuerAddress>
        <issuerContactPhone>877-275-2935</issuerContactPhone>
        <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>VanWinter Scott</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
        <relationshipsToIssuer>
          <relationshipToIssuer>Officer</relationshipToIssuer>
        </relationshipsToIssuer>
      </issuerInfo>
      <securitiesInformation>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <brokerOrMarketmakerDetails>
          <name>Rockefeller Capital Management</name>
          <address>
            <com:street1>3060 Peachtree Road NW</com:street1>
            <com:street2>STE 110</com:street2>
            <com:city>Atlanta</com:city>
            <com:stateOrCountry>GA</com:stateOrCountry>
            <com:zipCode>30305</com:zipCode>
          </address>
        </brokerOrMarketmakerDetails>
        <noOfUnitsSold>45000</noOfUnitsSold>
        <aggregateMarketValue>1119790.00</aggregateMarketValue>
        <noOfUnitsOutstanding>150932386</noOfUnitsOutstanding>
        <approxSaleDate>06/02/2023</approxSaleDate>
        <securitiesExchangeName>NYSE</securitiesExchangeName>
      </securitiesInformation>
      <securitiesToBeSold>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <acquiredDate>06/01/2017</acquiredDate>
        <natureOfAcquisitionTransaction>Stock Award</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Company</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>45000</amountOfSecuritiesAcquired>
        <paymentDate>06/01/2017</paymentDate>
        <natureOfPayment>Stock Award</natureOfPayment>
      </securitiesToBeSold>
      <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
      <noticeSignature>
        <noticeDate>06/02/2023</noticeDate>
        <signature>/s/ Christian Nasser, as a duly authorized representative of National Financial Services LLC, as attorney-in-fact for Scott Van Winter</signature>
      </noticeSignature>
    </formData>
  </edgarSubmission>
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text: 144
  0001814385
  XXXXXXXX
  LIVE
  0001782754
  AZEK Co Inc.
  001-39322
  1330 W FULTON STREET, #350
  CHICAGO
  IL
  60607
  877-275-2935
  VanWinter Scott
  Officer
  Common
  Rockefeller Capital Management
  3060 Peachtree Road NW
  STE 110
  Atlanta
  GA
  30305
  45000
  1119790.00
  150932386
  06/02/2023
  NYSE
  Common
  06/01/2017
  Stock Award
  Company
  N
  45000
  06/01/2017
  Stock Award
  Y
  06/02/2023
  /s/ Christian Nasser, as a duly authorized representative of National Financial Services LLC, as attorney-in-fact for Scott Van Winter