Everything You Ought to Know Before Buying an Apartment Air Conditioner

Weather changes are usually quite drastic, and you would find yourself either drenched in sweat or frozen to the bones before you know it. If your building does not have central air conditioning or your current apartment air conditioner has stopped working, it is time to invest in a good AC unit.
 
However, buying a new air conditioner is a tricky business. There are several new models, tons of brands, and numerous things you need to consider. For example, which air conditioner is the most energy-efficient? Or which one is the best budget air conditioner?