Even on the low setting, an air conditioner uses as a very large amount of electricity when cooling. Fans are much more cost-effective in terms of energy use.

Does window AC fan use a lot of electricity?

But do window AC units use a lot of electricity? Well, compared to central units, they do not. A window AC unit uses less than ⅓ of the amount of energy it would take to run a central unit for the same amount of time. But if you have more than one unit, it can quickly add up.

Does fan mode on window AC use less energy?

Power Consumption: Fan Mode : An AC unit on Fan mode usually consumes about 150W with the fan running, while the AC unit consumes 1000W when on default or Cool mode. … If you want to lower power bills you can set the AC on fan mode since this utilizes lower power, although you have to make do with warmer temperatures.