| 1 | 1 | ShoffnerKalthoff Mechanical Electrical Service 3600 Papermill Drive Knoxville, TN 37909
| 865-523-1129 skmes.com Knox
| 377/315/0 NA NA
| 60% / 15% 25% / NA David Dugger
| Min Kao-UT Computer Science Engineering Building (Blaine Construction), UHS Surgery Expansion at UT Medical Center (Johnson & Galyon), Neyland Stadium Expansion Phase 1C (Blaine), Knoxville Public Office Building (Welty Construction), Scripps Office Expansion (Blaine), Concord United Methodist Church (Rentenbach), UT Vet Center (Johnson & Galyon), UT Music Center (Johnson & Galyon), LMU Math and Science (LMU), UT Lighting Retrofit (UT)
| David Dugger President, CEO 1970
|
| 2 | 2 | Interstate Mechanical Contractors 3200 Henson Road Knoxville, TN 37921
| 865-588-0180 interstatemechanical.com Knox
| 143/143/NA $24,200,000 300
| 30% / 5% 65% / NA Terry & Robin Self Interstate Mechanical Contractors
| UTK Steam Distribution, UTK Grieve Hall, Hawkins County Schools, Maryville HS, LMU Math & Science Bldg., Embassy Suites, Northview Sr. Academy
| Terry L. Self President 1982
|
| 3 | 3 | Engert Plumbing & Heating 1715 Riverside Drive Knoxville, TN 37915
| 865-524-2535 engert.biz Knox
| 95/95/NA NA NA
| 100% / NA NA / NA Donna Johnston
| LeConte Medical Hospital, Roane Medical Center, Southwest Elementary School, Rhea Co. High School
| Donna G. Johnston President 1891
|
| 4 | 5 | Tennessee Trane 5220 Middlebrook Pike Knoxville, TN 37921
| 865-588-0607 trane.com/knoxville Knox
| 54/NA/NA NA NA
| 60% / 20% 20% / NA Trane U.S.
| Knox County Schools, Knox County Government, Volkswagen of America, Harrah's Casino
| Brian G. Durr Joey DeLoach District manager General manager 1949
|
| 5 | 4 | Chancey & Reynolds 614 Van St. Knoxville, TN 37921
| 865-525-5076 chanceyreynolds.com Knox
| 48/48/NA $5,343,000 3,500
| 30% / NA NA / 70% Steve Chancey
| F.E. Trainer Construction Co., Johnson & Galyon
| Steve Chancey President 1978
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