Corcoran & Harnist, proudly serving Cincinnati and surrounding areas for more than 31 years. With more than 40 years in the heating and cooling business, Corcoran and Harnist Heating and Air is dedicated to providing the best possible service for you and your family.
You can count on us to provide you with a system and solution that fits your family
Rick Haun —
Called C & H answering service due to loss of heat in our home. No emergency, but they called and responded first thing the
Covalent Laboratories is a collaboration of chemists, engineers, technicians and other professional support staff. We are dedicated to developing and supplying unique, functional chemistries for industrial heating and cooling, process and waste water systems while protecting the health and safety of customers, co-workers and the environment.
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