Between a washing machine and a window air conditioner (AC), the window air conditioner typically consumes more energy and can result in a higher electricity bill.
Air conditioners, in general, are known to be significant energy consumers, especially if they are used frequently or in hot climates. They have to work hard to cool the air and maintain the desired temperature, which requires a lot of electricity. The size and efficiency of the AC unit also play a role in how much energy it consumes.
On the other hand, washing machines do consume energy, but their energy usage is generally lower compared to air conditioners. The energy consumption of a washing machine depends on factors such as the load size, cycle duration, and efficiency of the machine.
If you are concerned about your electricity bill and want to reduce energy consumption, it's a good idea to use the washing machine with full loads, choose energy-efficient appliances, and be mindful of how often and when you use the window air conditioner. Additionally, using programmable thermostats and proper insulation can help manage the energy usage of the AC.