At Cox Engineering, we do all our design work in-house. With state-of-the-art computer modeling systems and other technologies, we can design the most advanced, efficient heating and cooling systems out there—from new construction to retrofitting historical structures.

Our modern production facility allows us to fabricate both sheet metal and piping in-house for many different kinds of projects. This capability is at the heart of our air handling construction success, and it's one of the reasons we’re known for outstanding quality.

Cox Engineering is a market leader in HVAC retrofits. With a performance record that exceeds expectations, we have the expertise to replace your aging system piece by piece—and bring it up to modern standards and efficiencies.

Professional. Attentive. Available 24/7. At Cox Engineering, we go above and beyond to bring peace of mind, increase your building’s value, and provide the utmost comfort to tenants within.


  • Custom Air Handling Solutions
  • Leed Green Building Consultation
  • 3D CAD & BIM Services
  • Integrated Design/Build Services


  • Sheet Metal Fabrication
  • Piping Fabrication
  • Mechanical Services
  • Testing Services
  • Commissioning


  • Retro-commissioning/ Recommissioning
  • Retrofit Project Management
  • Energy Savings and Energy Audit


  • 24-Hour Service
  • Vane Axial Fan Service
  • Start Test and Balance
  • Vibration Analysis
  • Air and Water Balancing
  • Preventative Maintenance Programs