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Affiliated Service offers customized & local support for your brand-specific equipment needs.


  • Startup, commissioning, maintenance & repair

  • Troubleshooting, verification, & evaluation of key system operations & controls

  • Re-Commission equipment

  • AHU leak and deflection testing

  • Locally-inventoried OEM parts

Sister Companies


Windy City Representatives is a full service manufacturer’s rep firm specializing in engineered systems. Housing a unique combination of engineering specialties, the company continues to meet the needs of its diverse customer base by offering service and support throughout the lifecycle of its projects.


Affiliated Parts is our replacement parts company located in Elmhurst, IL. They stock and supply all manufacturer lines we rep and many more. If you need a quick quote or need to pick up a part today, give them a call.

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