LIST OF SIGNIFICANT SUBSIDIARIES | JURISDICTION OF INCORPORATION | ||||
| Dynalectric Company | Delaware | ||||
| Dyn Specialty Contracting, Inc. | Virginia | ||||
| EMCOR Building Services, Inc. | Delaware | ||||
| EMCOR Construction Services, Inc. | Delaware | ||||
| EMCOR-CSI Holding Co. | Delaware | ||||
| EMCOR Mechanical Services, Inc. | Delaware | ||||
| MES Holdings Corporation | Delaware | ||||
| Shambaugh & Son, L.P. | Texas | ||||