Thank You for Contacting Us
Expect a call from our dispatcher to schedule a visit from our technician as soon as possible.
If you have not been contacted within 10 minutes, please call 847-593-0123 for assistance with your emergency request.
Why GHC
Join the thousands of satisfied customers who trust GHC’s for reliable service.
Deep Service Expertise
- All of our union-trained technicians undergo continuous education, staying up-to-date on advanced systems like chillers, hydronics, and VRF technology.
- Every technician follows a thorough 10-point process and uses the latest digital diagnostic tools, allowing us to quickly collect data and solve issues faster.
- We successfully completed over 10,000 service calls last year.
- Our core team of union-trained journeymen and service techs has an average tenure of 7.1 years with us.

7 years
All journeymen have at least 7 years of experience
10,000 service calls
More than 10k successful service calls in 2023
14-point process
Every tech follows our 14- point process