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

Why Jensen’s

Join the thousands of satisfied customers who trust Jensen’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.
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

We’re Ready To Help

Get reliable service from the leading plumbing and HVAC experts.