30-Jan-2014: Pennoni Associates is pleased to announce the acquisition of B.D. Abel, Inc., a 40-person firm located in Wilmington, DE. The firm, which is one of the only engineering firms in the tri-state area to offer NEBB certified HVAC Testing and Balancing services, will now do business as B.D. Abel, a Pennoni Company. Adding to the unique offerings of the firm, B.D. Abel is certified by the National Environmental Balancing Bureau (NEBB) for Testing, Adjusting and Balancing of Air and Hydronic Systems.