EX-21 4 eme-ex21_20231231xq4.htm LIST OF SIGNIFICANT SUBSIDIARIES
EXHIBIT 21

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