The Mechanical Contractors Association of America (MCAA) serves the unique needs of approximately 2,600 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:

| Mechanical Service Contractors of America (MSCA)
| Plumbing Contractors of America (PCA)
| National Certified Pipe Welding Bureau (NCPWB)
| MCAA Manufacturer/Supplier Council (M/SC)
| John R. Gentille Foundation (JRGF)