10 Largest Plumbing Companies in USA

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6. Residential Services Group, Inc.

Revenue =$524 million

Number of employees =22,000

Residential Services Group, Inc. ranks 6th on our list of largest plumbing companies in USA. It is an American company which mainly provides services for commercial and residential building equipment and systems. They also have an industry of electrical equipment. They mainly provide plumbing, heating, ventilation, air conditioning services, and they primarily operate in the U.S.

Largest Plumbing Companies in USA

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