We have seen the transformation of the HVAC industry as it has progressed. Since 1945, DeSeta continues to be a leader among ... commercial and industrial HVAC contractors and engineers on the East Coast. In our third generation of family leadership, our business is in our DNA. DeSeta's philosophy is to continue to be a source of reliability and integrity as a company established on a proud tradition of excellence and quality. DeSeta has a unique place in the HVAC industry as a company that is completely full service. Our knowledgeable, hands-on approach means we are involved in every step of the process, from customization, production and installation. We service all major public and private markets for industrial, institutional and commercial venues. read more