What is the ideal AC temperature to save electricity? Generally speaking, if you want to maximize energy savings, turn the AC off. Thankfully, rare is the person who would do that. Air conditioner equipment manufacturer Carrier says the go to setting should be 78° which may seem a little on the warm side for some! We could ask “How can I stay comfortable in my home (or business) and save money doing it?” This one we can help you with! Most people are comfortable between 72° and 75°.