Need an air conditioner in September? Just open your windows!

Overheard in the Newtonville Shaw's parking lot:

The furnace repair man didn't have the time to go to my friend's house to repair her furnace; because of the heat wave this September, he was too busy with the calls to repair air conditioners.  "People in Newton and Brookline don't know how to open their windows, it seems," he told her.