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Explore 7 Commercial Plumbing entities audited against our 19-year editorial standard. We provide structured data and human-reviewed insights to separate high-authority providers from unverified search results.
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Houston, United States
Comfort Systems USA (NYSE: FIX) is a Fortune 500 mechanical and electrical contracting company headquartered in Houston, Texas, providing HVAC, plumbing, piping, controls, off-site construction, monitoring, fire protection, and electrical systems services. Founded in 1997 through the merger of 12 companies, Comfort Systems USA operates 47 operating units with 178 locations across 136 US cities. The company ranked 6th on ENR's list of top 600 specialty contractors and serves commercial, industrial, and institutional customers nationwide.
Murphy Company is a premier national mechanical contractor founded in 1907 by John C. Murphy in St. Louis, Missouri. Family-owned for over a century, Murphy is one of the largest mechanical contractors in the United States with over 1,100 employees, regional offices in Illinois, Colorado, and Wyoming, and annual revenue exceeding $710 million. The company specializes in plumbing, pipefitting, sheet metal, HVAC, high-purity process piping, and refrigeration for commercial, industrial, institutional, and pharmaceutical clients.
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Secure Your $249.95 Permanent ListingSouthland Industries is one of America's largest mechanical, electrical, and plumbing (MEP) contractors, founded in 1949 and headquartered in Garden Grove, California. Southland is a full-service design-build firm offering in-house engineering, piping, sheet metal, plumbing, and pipefitting for large-scale commercial projects including offices, healthcare facilities, data centers, higher education campuses, and government buildings. The company operates across the western United States and is consistently ranked among ENR's top specialty contractors.