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MCA Houston Contractors Make Big Push JOIN NOW. Become a Member of our Association Legislation on Target for Key Texas Vote The Mechanical Contractors Association of Houston was chartered in 1950 to promote the mechanical contracting industry and to foster the exchange of ideas technical data and business information between itsmembers. Project Profile Graco Mechanical performs cooling tower demolition and replace at Lyric Center. Upcoming Events Throughout the year we sponsor local exceptional local trainingseminars.