Before you buy an air conditioner, consider the space you're shopping for and if you have the proper electrical requirements. The goal is to determine exactly the right size for you. Too small an air conditioner will continuously run and will not adequately cool a room. Too large a unit will tend to cycle off too quickly. The unit will not properly remove moisture from the air and may freeze, resulting in a higher energy bill.
Todays air conditioners have numerous features and here are some of the ones that people commonly look for when buying a new unit: