Founded in 1989, HESM&A is an engineering consulting firm that offers plumbing, construction administration, lighting design, building commissioning and claims investigation services. The firm provides energy simulation, hydraulic calculation, and heating, ventilation and air conditioning solutions. HESM&A also offers schematic, design development, construction document and specification review services. The firm undertakes projects for office buildings, hotels, retail centers, recreational and religious facilities and educational institutions. Its clients include Hattiesburg Clinic, Pineapple Management Services, McKibbon Brothers, Forrest General Hospital and Kaiser Permanente. The firm has completed projects for the Life University, Tampa Marriott Hotel, First Baptist Church, Pennsylvania Electric Company, West Shore Plaza and Mississippi Baptist Medical Center. HESM&A maintains a location in Ridgeland, Miss.