Energy-Efficient

摘要

This year, johnson controls beginsrna yearlong commemoration of its 125th anniversary. But the Milwaukee company probably won't be celebrating one recent, bittersweet milestone: In 2009 its venerable Building Efficiency division, the original thermostat business, again became Johnson's top revenue generator, supplanting the once-dynamic but lately beleaguered Automotive Experience unit, which sells everything from auto electronics to whole car seats.rnFounded in 1885 by Wisconsin Natural Sciences professor Warren Johnson, who invented the thermostat, the company diversified into auto supplies in 1978, and by 1993 sales from that burgeoning business had eclipsed those from home and office controls. But with the decline of the U.S. auto industry, Automotive Experience's revenue has dropped by one third since 2008.