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We deeply regret to announce that William J. "Bill" Coad passed away on August 9, 2014.

His obituary can be found here or at

William J. Coad

Coad Engineering Enterprises, Inc. is no longer in business.

Engineering Software International, Inc. (ESI) offers a set of engineering calculation programs to assist engineers and designers in the analysis and design of Heating, Ventilating, and Air Conditioning Systems. The programs are interactive allowing the engineer or analyst the flexibility of iterative analysis when implementing design options.

Further Information on ESI may be found at: