Trystate, headquartered in Douglaston, NY, is a full-service HVAC contractor that installs air conditioning and heating systems throughout the New York metro market. Our clients include hospitals, universities and cultural institutions. We work directly for property owners and construction managers. We are 100% union and self-perform the installation of piping systems with our staff of steamfitters. Trystate also provides service work to the residential, educational, cultural, healthcare and commercial office markets throughout the New York region.