Does turning the air conditioning off when you’re not home save energy?

(The Conversation) - Hot summer days can mean high electricity bills. People want to stay comfortable without wasting energy and money. Maybe your household has fought over the best strategy for cooling your space. Which is more efficient: running the air conditioning all summer long without break, or turning it off during the day when you’re not there to enjoy it?We are a team of architectural and building systems engineers who used energy models that simulate heat transfer and A/C syste