United Technologies Corporation (
UTC) is an
American multinational conglomerate headquartered in
Farmington, Connecticut. It researches, develops, and manufactures high-technology products in numerous areas, including
aircraft engines,
HVAC,
fuel cells,
elevators and
escalators, fire and
security, building systems, and industrial products, among others. UTC is also a large military contractor, producing missile and aircraft systems. Gregory Hayes is the current CEO.