Johnson Melloh is Indiana’s only one-stop solution for a turnkey, full-service partnership that offers the best in mechanical experience and innovative energy solutions.

Providing retrofit, new construction and design/build high-performance systems for cost-savings energy, Johnson-Melloh is your full-service solution for a more productive, more efficient working environment.


Johnson-Melloh Solutions is Leading the Way in Energy Innovation and has become a leading Indiana Energy Service Company (ESCO) focusing on renewable and alternative energy…

For nearly 40 years, Johnson-Melloh Mechanical has maintained a reputation for consistent quality for comprehensive commercial mechanical contracting services…

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Our Services

  • Design Build/Performance Contracting
  • Mechanical Electrical & Plumbing Construction
  • Develop, Engineer, Procure & Construct Solar Projects
  • Facilities Maintenance
  • Energy Savings Engineering
  • Project Finance