Central AC units can use a whole lot more than 3500 Watts of energy, but they can also use a whole lot less. It all depends on how efficiently you manage the system. Cooling your home can be costly if you don’t pay think it through. The cost to run an AC unit depends on the size of the unit. However, the average costs for each size unit can be:
- Central Air Conditioner (3500 W) – $245 per month.
- Large Window Units (1440 W) – $100 per month.
- Medium Window Units (900 W) – $62 per month.
- Small Window Units (500 W) – $35 per month.