Andrews, Hammock & Powell, Inc. is a multi-disciplined firm consisting of mechanical and electrical engineers, commissioning agents, construction administrators, and support personnel working together to serve the interests and needs of our clients. For every assignment, we endeavor to achieve design excellence, and at Andrews, Hammock & Powell, Inc., we believe the key to productive design stems from the Principals’ personal involvement in the design of every project.  Accordingly, we have structured our firm’s size and areas of practice to achieve that goal.  We have developed an excellent working relationship with many of our clients over the years.  As a result, our practice has grown through repeat work and referrals from past clients. The dedicat­ed efforts of our skilled engineers, designers, CADD operators, and support personnel allow us to provide our clients with a single source of responsibility for all their mechanical and electrical engineering needs. We are confident we have the staff and experience necessary to provide the solutions you need.

Sustainable Designs:

Andrews, Hammock & Powell is committed to designing systems that preserve our natural resources and minimize negative impacts on the environment.  Eleven members of our firm are Accredited Professionals in the U.S. Green Building Council’s LEED program.  Whether you desire a LEED certified building or a building designed with sustainable systems and technologies, we have the experience and staff to assist you in achieving these goals.

Areas of Practice:

Mechanical Engineering:

  • Central Energy Plants
  • Air Conditioning
  • Heating, Ventilation & Exhaust
  • Refrigeration
  • Industrial Ventilation & Processes
  • Indoor Air Quality Studies
  • Geothermal Well Fields

Plumbing/Fire Protection Engineering:

  • Building Utilities
  • Conventional Plumbing Systems
  • Medical Gases and Vacuum
  • Industrial Plumbing Systems
  • Wet/Dry/Chemical Fire Protection
  • Gasoline Storage, Pumping & Piping

Electrical Engineering:

  • Interior & Exterior Lighting
  • Power & Primary Distribution
  • Communications (TV, PA, Intercom, Telephone, Data)
  • Computer Cabling
  • Security (Detention, Fire, Intrusion)
  • UPS, CO-GEN, Lightning Protection


  • Building Systems
  • Fundimental LEED Commissioning
  • Enhanced LEED Commissioning
  • Retro Commissioning
  • Georgia Sustainable "Peach" Commissioning