About Us

Summa Mechanical Contractors, Inc. is a privately owned, self-performing contractor specializing in prime mechanical construction.  With over 80% of our business from long-term clients, we are recognized as a safe, quality oriented, competitive contractor.  As Arizona's 12th oldest mechanical contractor, we have been in business since 1979 and have provided construction management and installation services to many clients.

Led by John Summa, our team has worked together successfully over the past 30 years on a variety of projects, including construction manager at risk, prime contracting, and mechanical subcontracting in the following industries and facilities:

  • Education
  • Government
  • Commercial
  • Industrial
  • Power Plants
  • Medical
  • Water
  • Waste Water
  • Water Treatment Plants
  • Machinery Erection
  • Conveyors, Chutes, and Hoppers
  • Conveyors & Baggage Handling  

For more information about our experience, please visit our portfolio


Summa Mechanical Contractors, Inc. holds the following contractor's licenses in the state of Arizona: 

  • ROC070721 (A) - General Engineering
  • ROC070722 (B-01) - General Commercial Contracting
  • ROC070723 (C-04) - Commercial Boilers, Steamfitting, & Process Piping
  • ROC070724 (C-77) - Commercial Plumbing, Including Solar
  • ROC070725 (C-79) - Commercial Air Conditioning & Refrigeration, Including Solar
  • ROC108380 (CR-45) - Commercial Sheet Metal


Summa has an award-winning safety record.  Our team maintains many levels of safety training and certification.  Among these certifications are:

  • OSHA-30
  • Asbestos Awareness
  • Confined Space
  • Lock-out Tag-out
  • Forklift
  • Aerial Lift
  • Crane Training