UTC Fire & Safety Systems

Carrier -   Heating and Cooling ( HVAC )

UTC Fire & Safety Systems

Hamilton Sundstrand - Aerospace Systems and Industrial Products

Otis -  Elevators and Escalators

Pratt & Whitney - Aircraft Engines

Sikorsky -   Helicopters and UTC Power fuel cells.

United Technologies Corporation ( UTC ) is a global technology corporation with a long history of pioneering innovation in aerospace, aviation, helicopter design, climate control, elevator design and hydrogen fuel cells.

UTC is a $ 55 billion company whose products include :