Courtyards like this one at Alys Beach play a crucial role in frugality because they can entice people outdoors where they become acclimated to the local environment. When they return indoors, they may be comfortable enough to open the windows and leave the equipment off. But this only works if the courtyard is comfortable. Trees play a huge role, shading the courtyard in summer, dropping the temperature by ten degrees or more. And if they're deciduous, they drop their leaves in winter, allowing the sun to warm the pavers and hold that heat deep into the evening.