Exhibit 21.1
Comfort Systems USA, Inc. Subsidiaries
Entity No. |
| ENTITY NAME |
| STATE OF ORGANIZATION |
1 |
| Accurate Air Systems, L.P. |
| Texas |
2 |
| Accu-Temp GP, Inc. |
| Delaware |
3 |
| Accu-Temp LP, Inc. |
| Delaware |
4 |
| ACI Mechanical USA. Inc. |
| Delaware |
5 |
| ACI Mechanical, Inc. |
| Delaware |
6 |
| AirTemp, Inc. |
| Delaware |
7 |
| ARC Comfort Systems USA, Inc. |
| Delaware |
8 |
| Atlas Comfort Systems USA, L.P. |
| Texas |
9 |
| Atlas-Accurate Holdings, L.L.C. |
| Delaware |
10 |
| Batchelor’s Mechanical Contractors, Inc. |
| Alabama |
11 |
| BCM Controls Corp. |
| Massachusetts |
12 |
| California Comfort Systems USA, Inc. |
| California |
13 |
| Central Mechanical, Inc. |
| Delaware |
14 |
| Climate Control, Inc. |
| Delaware |
15 |
| Comfort Systems USA (Arkansas), Inc. |
| Delaware |
16 |
| Comfort Systems USA (Atlanta), Inc. |
| Georgia |
17 |
| Comfort Systems USA (Baltimore), Inc. |
| Delaware |
18 |
| Comfort Systems USA (Bristol), Inc. |
| Delaware |
19 |
| Comfort Systems USA (Florida), Inc. |
| Florida |
20 |
| Comfort Systems USA (Hartford), Inc. |
| Delaware |
21 |
| Comfort Systems USA (Intermountain), Inc. |
| Utah |
22 |
| Comfort Systems USA (Ohio), Inc. |
| Ohio |
23 |
| Comfort Systems USA (Southeast), Inc. |
| Delaware |
24 |
| Comfort Systems USA (Syracuse), Inc. |
| New York |
25 |
| Comfort Systems USA (Texas), L.P. |
| Texas |
26 |
| Comfort Systems USA G.P., Inc. |
| Delaware |
27 |
| Comfort Systems USA National Accounts LLC |
| Indiana |
28 |
| CS53 Acquisition Corp. |
| Delaware |
29 |
| Design Mechanical, Inc. |
| Delaware |
30 |
| Eastern Heating & Cooling, Inc. |
| New York |
31 |
| Eastern Refrigeration Co., Inc. |
| New York |
32 |
| Granite State Plumbing & Heating LLC |
| Delaware |
33 |
| H&M Mechanical, Inc. |
| Delaware |
34 |
| Hess Mechanical Corporation |
| Delaware |
35 |
| Hudson River Heating and Plumbing, Inc. |
| Delaware |
36 |
| J&J Mechanical, Inc. |
| Kentucky |
37 |
| James Air Conditioning Enterprise Inc. |
| Puerto Rico |
38 |
| Martin Heating, Inc. |
| Wyoming |
39 |
| Mechanical Technical Services, L.P. |
| Texas |
40 |
| MJ Mechanical Services, Inc. |
| Delaware |
Entity No. |
| ENTITY NAME |
| STATE OF ORGANIZATION |
41 |
| North American Mechanical, Inc. |
| Delaware |
42 |
| Quality Air Heating and Cooling, Inc. |
| Michigan |
43 |
| Quality Professional Employer Organization LLC |
| Delaware |
44 |
| S&K Air Conditioning Co., Inc. |
| Georgia |
45 |
| S.I. Goldman Company, Inc. |
| Delaware |
46 |
| S.M. Lawrence Co., Inc. |
| Tennessee |
47 |
| SA Associates, Inc. |
| Utah |
48 |
| Salmon & Alder, LLC |
| Utah |
49 |
| Seasonair, Inc. |
| Maryland |
50 |
| Sheren Plumbing & Heating, Inc. |
| Delaware |
51 |
| Temp-Right Service, Inc. |
| Delaware |
52 |
| The Capital Refrigeration Company |
| Delaware |
53 |
| Tri-City Mechanical, Inc. |
| Arizona |
54 |
| Western Building Services, Inc. |
| Colorado |