Most, if not all, air conditioners that we sell are capable of displaying the temperature in both Celsius and Fahrenheit. You might not get your preference when the air conditioner comes out of the box, but switching between the two is no hassle at all!
Simply hold down both the temperature up and down buttons at the same time for a few seconds and the unit should switch between the two units of measurement. Repeat to go back to the original setting. This is a simple trick that works for window, through wall, and portable air conditioners. In fact, it works on most of the simple thermostats that you will come across.