United Technologies Research Center, Connecticut

Main R&D and test facility for United Technologies, the parent company for Pratt & Whitney aircraft engines, Otis elevators, UTC Aerospace Systems, UTC Climate, Controls & Security, and other commercial industrial equipment manufacturers. Located in an office/industrial complex in East Hartford occupying 450,000 square feet of space, facilities include wind tunnels, laboratories, combustion testing and chemical laser development facilities. United Technologies, headquartered in Farmington, Connecticut, is a US$56 billion company (2015), that employs over 197,000 people worldwide.