Johnson Controls International plc (JCI) is an Ireland-based multinational conglomerate specializing in smart, healthy, and sustainable building solutions. Valued at a market cap of $70.1 billion, the company engineers, manufactures, and services high-performance systems such as HVAC (heating, ventilation, and air‑conditioning), industrial refrigeration, integrated fire detection and suppression, security systems, and building management platforms. Companies worth $10 billion or more are typically classif ...