Examiner | graphic The bigger chill Homes in the Northeast have been built larger and larger over the decades. And the proportion of homes cooled with central air has grown, too. Visit The Boston Globe Share on Twitter Share on Facebook Comment on this Scroll to top of page By Alvin Chang Globe Staff July 19, 2013 Here’s a look at how the use of central air in the region has changed since the 1940s. Advertisement Loading comments...