In terms of physics, no it doesn't make sense, it would consume less energy to turn it on when you get home (or set a timer for 30 mins before you get home). Ho

In terms of physics, no it doesn't make sense, it would consume less energy to turn it on when you get home (or set a timer for 30 mins before you get home). However electricity is usually the most expensive during the evening, and in places that have abundant solar, the cheapest during the day.