Building comfort and reliability with exceptional craftsmanship

Custom HVAC & Refrigeration Design Build Retrofit Services

Upgrade and Modernize Your Commercial HVAC System

When it’s time to upgrade or install new HVAC and refrigeration systems, you need a tailored solution that’s efficient, cost-effective, and adheres to your precise specifications.  

GHC is here to help with custom design-build retrofit services that streamline your project from start to finish. Our approach ensures that your project is delivered on time, within budget, and with the highest level of craftsmanship. 

From concept to completion — GHC is your trusted partner for commercial HVAC construction. 

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Benefits of Design-Build Retrofit Services from GHC

GHC provides design-build retrofit service to Chicagoland commercial and industrial facility and property managers of buildings at least 10k square feet. 

  • Combined design-build method enables smoother delivery and better communication

  • Value engineering drives cost optimization

  • Precision execution means every system meets industry standards

  • Project management experience –completing construction projects on time, on budget and on spec

  • Expert at solving complex HVAC design-build challenges

  • Our union technicians have been and continue to be trained by the most expert tradespeople in the country

What Makes GHC the Most Dependable in the Business?

  • Expertise you can trust: The current GHC Union Trained Technicians have worked here for over 14 years on average.
  • MSCA Star Qualified: Exceeding stringent testing requirements through Local 597, we are proud to be among the best trained companies in Illinois.
  • Advanced diagnostic tools: Every GHC tech follows our 14-point inspection process and uses the latest diagnostic tools to quickly solve problems.
  • Proven track record: GHC has been an industry leader for over 50 years, over 10,000 successful service calls last year.
  • An industry-leading number of call-backs (0.06% of all service calls were call-backs).
GHC Technicians Working on Outside HVAC Unit

“GHC is a top flight industrial HVAC company. I have been using them for years for all my residential and commercial projects.”

Joe E.  , Construction


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

See Why More Customers Trust GHC

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