It’s a common belief that closing your doors is more efficient for central air conditioners because it funnels air into smaller spaces or cuts off rooms that don’t need to be cooled. Google data shows people have been asking this question online for years. Read more: https://www.wtsp.com/article/news/verify/closing-doors-save-money-on-central-air-conditioning/67-2d573b75-d37c-4146-968b-2386289ef6c3