The Mechanical Contractors Association of America (MCAA) serves the unique needs of approximately 2,300 firms involved in heating, air conditioning, refrigeration, plumbing, piping, and mechanical service. We do this by providing our members with high-quality educational materials and programs to help them attain the highest level of managerial and technical expertise. MCAA includes the Mechanical Service Contractors of America, the Plumbing Contractors of America, the Manufacturer/Supplier Council, the Mechanical Contracting Education and Research Foundation and the National Certified Pipe Welding Bureau.