24-Hour Emergency Service314-291-0100

HVAC ServicesAll Under One Roof

Jarrell Contracting offers a full spectrum of mechanical services for commercial, industrial, institutional and government projects of any size nationwide. In all aspects of our company, we hold ourselves to the highest standards to give our customers the highest quality customer care and services.We have assembled teams focused on 8 key elements of HVAC System Automation "All Under One Roof."


Design Engineering

By adding so many services and capabilities over the years, we have gained much more perspective that provides…

  • Design options
  • Reduce costs
  • Improve building performance

Learn More



Our Design Team is focused on “Value Engineering”

  • 15 engineers
  • 8 P.E.s
  • 4 CAD/BIM specialists

Learn More



Our Controls Team can help save as much as 20% on energy

  • Utilize an Open Protocol Approach
  • NEBB Certified
  • Specialists in Direct Digital Control Systems

Learn More


Prefab Shops

Our Prefab Shops allow us to manufacture in a controlled environment

  • 21,500 Sq/ft Sheet Metal Shop
  • 6,000 Sq/ft Pipe Fabrication Shop

Learn More



Our Design Team is focused on “Value Engineering”

  • 15 Engineers
  • 8 P.E.s
  • 4 CAD/BIM Specialists

Learn More



Our Monitoring Team can spot issues before they become problems

  • 24/7 Automated Monitoring
  • Experience in over 250 buildings

Learn More



Our Service Teams handle everything from start-up to warranties

  • 58 Service Vans
  • 654 Service Contracts
  • NEBB Certified

Learn More


Energy Mgmt.

Our Entire team helps customers save energy and money

  • Energy Audits
  • Retro-Commissioning
  • Energy Rebates

Learn More


Jarrell Background

Manage Your Energy Usage More Effectively

Our Green Energy Management Solutions (GEMS) team ensures that the systems we design and install run at optimal, energy-saving levels while earning relevant rebates and incentives. 

Learn More