Connors-Haas Inc. was originally founded in 1966 as Connors Electric, Inc. by Don Connors and Bill Haas and in 1969 the Company was renamed Connors-Haas, Inc.

In 1977, Bill bought out Don, but kept the company name, as by this point it was becoming well-known in the City of Rochester.

The Company has continued to grow over the past several years, and has expanded its geographic area to include work in the Southern Tier of New York State, as well as the Finger Lakes region, Watertown and Batavia. Currently, the Company has firmly established itself as one of the premier industrial and commercial electrical contractors in the Greater Rochester area.