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Barbara Hattemer McCrary, P.E.
President, Mechanical Engineer

Barbara H. McCrary, PE –  Barbara earned both a Bachelor’s of Science and Master’s of Science Degree in Mechanical Engineering from the University of Alabama.  Prior to joining HHB Engineers, McCrary worked at a mechanical consulting firm in Atlanta, GA.   She became President of HHB Engineers in June of 2014.

Barbara has experience on a variety of projects including major renovations, athletic facilities, historic buildings, LEED certified projects, college and university projects, detention facilities, office buildings, military projects, data and communications facilities, and Prime AE project management for university, military, and governmental clients.   Both as Prime AE and Consultant, Barbara’s projects often involve complex phasing where the building will remain occupied and/or systems can only be down during limited periods.   McCrary has extensive experience with whole building energy modeling for as part of integrated design practices, and for submission on LEED projects.

McCrary understands and embraces the challenge of finding the right balance between first costs, the needs of the user, energy costs and efficiency, and long term maintenance considerations when selecting systems types for buildings.   Barbara has experience with a wide range of HVAC and mechanical systems including:

  • Chilled water plants and distribution systems
  • Hot water plants and distribution systems
  • Variable primary and primary/secondary systems
  • VAV systems
  • Water source heat pump systems
  • Ground source and lake source heat pump (geothermal) systems – lake system featured in ASHRAE Journal (April 2018)
  • Split system DX systems
  • Dedicated outside air systems
  • Specialized indoor environments such as Operating Rooms
  • Commercial kitchens
  • Plumbing systems
  • Rainwater harvesting systems

McCrary’s honors and recognitions including 2022 Engineered Systems Magazine 20 Women to Watch in HVAC, 2021 Engineer of the Year Award from the Engineering Council of Birmingham (ECOB),  Birmingham ASHRAE Chapter 2021 Engineer of the Year,  inductee as University of Alabama Mechanical Engineering Distinguished Fellow in 2016,  and Birmingham ASHRAE Chapter’s 2013 Young Engineer of the Year (ages 35 and under).  Her selection from ASHRAE is for outstanding achievement in the application of heating, refrigeration, and air-conditioning technology.

Barbara won the 2006 ASHRAE Willis H. Carrier Award for a best paper presented at an ASHRAE meeting in 2006, by a member age 32 years and younger, and also received the 2006 ASHRAE Presentation Award for the best poster presentation from the 2006 Winter and Annual Meetings.  Barbara presented another paper at a previous ASHRAE Winter meeting (published in ASHRAE Transactions) and co-authored an article published in ASHRAE Journal, all originating from her graduate studies at the University of Alabama. Her graduate degree studies were in the area of geothermal heating and cooling systems with an emphasis on lake source heat pump systems, working with Dr. Steve Kavanaugh.

Barbara is licensed engineer in Alabama, Georgia, and Mississippi, and has been a LEED Accredited Professional (AP) since 2006.  She maintains the LEED AP BD+C credential.

Barbara is a member of the following professional societies:

  • American Society of Heating, Refrigeration & Air Conditioning Engineers (ASHRAE)
  • United States Green Building Council (USGBC)
  • American Society of Plumbing Engineers (ASPE)
  • National Society of Professional Engineers (NSPE)
  • National Fire Protection Association (NFPA)
  • Association of Energy Engineers
  • Pi Tau Sigma (Mechanical Engineering Honor Society)
  • Tau Beta Pi (Engineering Honor Society)

McCrary currently serves on the University of Alabama Department of Mechanical Engineering Advisory Board, and is active in the group Women Business Owners of the River Region, who supports and provides networking opportunities to women business owners.    She and her husband Zac live in Prattville, AL with their Italian Greyhound.