Decker retired from Xylem at the end of last year having served as president and CEO since March 2014.
"Patrick is a fantastic addition of a world-class executive with experience transforming Xylem from an industrial products company to an advanced technology, services and solutions enterprise," said Jürgen Tinggren, Johnson Controls lead independent director. "Patrick's appointment reflects our commitment to continuously refresh our board to ensure the skills and experiences of our directors appropriately reflect Johnson Controls' transforming business. We welcome Patrick to the board and are excited to benefit from the experience and expertise he will bring."
Prior to leading Xylem, Decker was president and CEO of Harsco Corporation. He also held various leadership roles at Tyco from 2003 until 2012, including president of Tyco Flow Control.