10 Largest Plumbing Companies in USA

10. American Plumbing & Mechanical, Inc. Revenue =$210 million Number of employees =16,000

9. Ewing-Doherty Mechanical, Inc. Revenue =$455 million Number of employees =23,000

8. TDIndustries, Inc. Revenue =$475 million Number of employees =43, 000

7. FirstEnergy Facilities Services Group, Inc. Revenue =$14 billion Number of employees =16,000

6. Residential Services Group, Inc. Revenue =$524 million Number of employees =22,000

5. PPL Energy Services Holdings LLC Revenue =$7 billion Number of employees =19,000

4. Comfort Systems USA, Inc. Revenue =$524 million Number of employees =22,000

3. Roto-Rooter Revenue =$844 million Number of employees =20,000

2. American Residential Services Revenue =$1 billion Number of employees =5,000

1. EMCOR Group, Inc. Revenue =$7.5 billion Number of employees =33,000