**Exhibit 21.1**

 

**Subsidiaries of Thermon Group Holdings, Inc.**

** **
| **Name of Subsidiary**                                  | ** ** | **State or Other Jurisdiction of   Incorporation or Organization** |
|-------------------------------------------------------------------|------------|--------------------------------------------------------------------------------------------------|
| Thermon   Holding Corp.                                           |       | Delaware                                                                                         |
| Thermon   Industries, Inc.                                   |       | Texas                                                                                            |
| Thermon   Canada Inc.                                             |       | Nova   Scotia                                                                                    |
| Thermon   Manufacturing Company                                   |       | Texas                                                                                            |
| Thermon   Heat Tracing Services, Inc.                        |       | Texas                                                                                            |
| Thermon   Heat Tracing Services-I, Inc.                      |       | Texas                                                                                            |
| Thermon   Heat Tracing Services-II, Inc.                     |       | Louisiana                                                                                        |
| Thermon Latinoamericana, S. de R.L. de C.V.                       |       | Mexico   DF, Mexico                                                                              |
| Thermon   Europe B.V.                                             |       | Netherlands                                                                                      |
| Thermon   Benelux B.V.                                            |       | Netherlands                                                                                      |
| Thermon   Deutschland GmbH                                        |       | Germany                                                                                          |
| Thermon   Ltd.                                                    |       | Russian   Federation                                                                             |
| Thermon   France SAS                                              |       | France                                                                                           |
| Thermon Italia, S.p.A (in liquidation)                            |       | Italy                                                                                            |
| Thermon   U.K. Ltd.                                               |       | United   Kingdom                                                                                 |
| Thermon   Australia Pty. Ltd.                                     |       | Australia                                                                                        |
| Thermon   Far East, Ltd.                                     |       | Japan                                                                                            |
| Thermon   Heat Tracers Pvt. Ltd                                   |       | India                                                                                            |
| Thermon   Heat Tracing & Engineering (Shanghai) Co. Ltd. |       | China                                                                                            |
| Thermon   Korea, Ltd.                                        |       | Korea                                                                                            |
| Thermon   Middle East, WLL                                        |       | Bahrain                                                                                          |

 

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