A & R Mechanical

Dilling Group, Inc., based in West Lafayette, IN, specializes in providing comprehensive industrial and commercial construction solutions, including mechanical, electrical, and plumbing services. With over 75 years of experience, the company is committed to enhancing the manufacturing base of the country through self-performed work on projects ranging from small HVAC services to large-scale greenfield constructions. The company serves a diverse array of markets, including agribusiness, automotive, chemical processing, and institutional sectors, among others. As a subsidiary of Comfort Systems USA since 2018, Dilling Group possesses the financial and bonding capacity to manage projects of any size effectively. Generated from the website

Ed Grace Division is a part of Shambaugh & Son, which is a construction and engineering firm. Founded in 1926, the parent company is also one of the largest specialty contractors in the United States. It performs nearly $270 million of construction every year. Shambaugh & Son employs more than 1,500 professionals throughout over 40 U.S. states. The parent company undertakes new and retrofit construction projects for the industrial, commercial, institutional, food processing, medical and commercial sectors. It provides mechanical, refrigeration, electrical, process controls, fire protection, and water and waste treatment services. Shambaugh & Son has achieved ISO 9001:2000 certification. The parent company is a part of EMCOR Group.