My office in the shop has a window ac unit, I run a small thermostat controlled heater in the winter, but the rest of the shop is unconditioned. It's only and 8' x 8' office, but gives me a chance to go in and cool off or warm up. On days like today where it's 106* heat index, I'll skip going out there all together. On days where it's not quite this hot and any breeze, I can usually open both doors (front and back) and let the breeze blow through and be comfortable. If we decide to stay here, I'll someday insulate and enclose the ceiling to be able to heat it in the winter, but doubt I'd do an a/c unit other than on the office area.
To a small child, the perfect granddad is unafraid of big dogs and fierce storms but absolutely terrified of the word “boo.” – Robert Brault