How Much Electricity Does a Central AC Use? (+Calculator)
5 Ton: 3.75 kWh: 2,700 kWh: 4,950 kWh * Based on 16 SEER AC and average yearly cooling hours in the U.S.. Example: How much electricity does a 2.5 ton central AC use? The chart tells us that a 2.5 ton central AC uses 1.88 kWh of electricity each hour. This means that in one month, a 2.5 ton central AC uses 1350 kWh of …