Heikki Ihasalo works as a unit manager at YIT in Finland. YIT offers design, installation and maintenance services for HEPACE (heating, plumbing, air-conditioning and electricity), automation and security and is the market leader in building services in the Nordic region. Heikki is also a postgraduate student in the Department of Automation and Systems Technology at the Helsinki University of Technology. At the moment Heikki is a visiting researcher at the Center for Environmental Design Research at the University of California Berkeley.