EXHIBIT 21.1
SUBSIDIARIES OF COMFORT SYSTEMS USA, INC.
ENTITY NAME |
| DOMESTIC JURISDICTION |
| FORMATION DATE |
|
|
|
|
|
ACI Mechanical, Inc. |
| Delaware |
| 06/26/1998 |
ARC Comfort Systems USA, Inc. |
| Delaware |
| 03/17/1998 |
Accu-Temp GP, Inc. |
| Delaware |
| 05/21/1998 |
Accu-Temp LP, Inc. |
| Delaware |
| 05/20/1998 |
Acorn Industrial, Inc. |
| North Carolina |
| 12/31/2009 |
Air Systems Engineering, Inc. |
| Washington |
| 05/18/1973 |
AirTemp, Inc. |
| Delaware |
| 10/15/1998 |
Atlas-Accurate Holdings, L.L.C. |
| Delaware |
| 12/28/1998 |
Atlas Comfort Systems USA, Inc. |
| California |
| 07/31/2007 |
Atlas Comfort Systems USA, L.L.C. |
| Delaware |
| 06/29/2007 |
Batchelor’s Mechanical Contractors, Inc. |
| Alabama |
| 03/16/1981 |
BCM Controls Corporation |
| Massachusetts |
| 10/03/1984 |
California Comfort Systems USA, Inc. |
| California |
| 05/18/1983 |
Comfort Systems USA (Arkansas), Inc. |
| Delaware |
| 03/17/1998 |
Comfort Systems USA (Baltimore), LLC |
| Delaware |
| 10/15/1998 |
Comfort Systems USA (Bristol), Inc. |
| Delaware |
| 08/25/1997 |
Comfort Systems USA (Carolinas), LLC |
| Delaware |
| 06/09/2006 |
Comfort Systems USA (CS1), Inc. |
| Delaware |
| 12/14/2009 |
Comfort Systems USA Energy Services, Inc. |
| Delaware |
| 08/25/1997 |
Comfort Systems USA G.P., Inc. |
| Delaware |
| 08/12/1998 |
Comfort Systems USA (Intermountain), Inc. |
| Utah |
| 05/06/1969 |
Comfort Systems USA (Kentucky), Inc. |
| Kentucky |
| 02/10/1981 |
Comfort Systems USA (MidAtlantic), LLC |
| Virginia |
| 01/01/2010 |
Comfort Systems USA (Midwest), LLC |
| Iowa |
| 10/13/2009 |
Comfort Systems USA National Accounts, LLC |
| Indiana |
| 07/28/1998 |
Comfort Systems USA (Ohio), Inc. |
| Ohio |
| 10/10/1979 |
Comfort Systems USA (Pasadena), Inc. |
| Texas |
| 06/29/2007 |
Comfort Systems USA Puerto Rico, Inc. |
| Puerto Rico |
| 05/31/1998 |
Comfort Systems USA (South Central), Inc. |
| Delaware |
| 06/29/2007 |
Comfort Systems USA (Southeast), Inc. |
| Delaware |
| 03/24/1998 |
Comfort Systems USA (Southwest), Inc. |
| Arizona |
| 12/23/1977 |
Comfort Systems USA (Syracuse), Inc. |
| New York |
| 03/08/1965 |
Comfort Systems USA (Texas), L.P. |
| Texas |
| 08/14/1998 |
Comfort Systems USA (Twin Cities), Inc. |
| Minnesota |
| 08/01/2001 |
Comfort Systems USA (Western Michigan), Inc. |
| Michigan |
| 07/21/1989 |
CS53 Acquisition Corp. |
| Delaware |
| 01/26/1999 |
SUBSIDIARIES OF COMFORT SYSTEMS USA, INC.
Delcard Associates, Inc. |
| Delaware |
| 06/23/2000 |
Delcard Mechanical, LLC |
| New Jersey |
| 11/07/2008 |
Design Mechanical Incorporated |
| Delaware |
| 10/30/1997 |
Dillingham & Smith Mechanical and Sheet Metal Contractors, LLC |
| Tennessee |
| 06/26/2008 |
Eastern Heating & Cooling, Inc. |
| New York |
| 12/19/1988 |
Eastern Refrigeration Co., Inc. |
| New York |
| 01/30/1990 |
Granite State Holdings Company, Inc. |
| Delaware |
| 11/02/2005 |
Granite State Plumbing & Heating, LLC |
| Delaware |
| 07/31/2001 |
H & M Mechanical, Inc. |
| Delaware |
| 06/25/1998 |
Helm Corporation |
| Colorado |
| 10/26/1972 |
Hess Mechanical Corporation |
| Delaware |
| 03/17/1998 |
Hudson River Heating and Cooling, Inc. |
| Delaware |
| 08/19/2005 |
H-VAC Supply, L.L.C. |
| Puerto Rico |
| 10/18/2006 |
Mechanical Technical Services, Inc. |
| Delaware |
| 06/29/2007 |
Merit Mechanical, Inc. |
| Washington |
| 02/14/1984 |
MJ Mechanical Services, Inc. |
| Delaware |
| 12/12/1997 |
North American Mechanical, Inc. |
| Delaware |
| 03/17/1998 |
Plant Services Incorporated |
| Iowa |
| 07/02/1986 |
Quality Air Heating and Cooling, Inc. |
| Michigan |
| 09/10/1980 |
Riddleberger Brothers, Inc. |
| Virginia |
| 12/22/1958 |
S.I. Goldman Company, Inc. |
| Delaware |
| 03/17/1998 |
S.M. Lawrence Company, Inc. |
| Tennessee |
| 03/08/1973 |
SA Associates, Inc. |
| Utah |
| 03/27/1984 |
Salmon & Alder, LLC |
| Utah |
| 07/08/1996 |
Seasonair, Inc. |
| Maryland |
| 10/28/1966 |
Temp-Right Service, Inc. |
| Delaware |
| 09/25/1997 |
The Capital Refrigeration Company |
| Delaware |
| 08/06/1998 |