When the temperature outside begins to climb, many people seek the cool comfort of indoor air conditioning. Like water towers and power lines, air conditioners are one of those things that we see every day but seldom pay much attention to.

Air conditioners come in various sizes, cooling capacities and prices. One type that we see all the time is the window air conditioner.

Window air conditioners are an easy and economical way to cool a small area.

Most people who live in suburban areas usually have one of these in their backyard:

If you live in an apartment complex, this is probably a familiar sight:

Most businesses and office buildings have condensing units on their roofs, and as you fly into any airport you notice that warehouses and malls may have 10 or 20 condensing units hidden on their roofs:

And then if you go around back at many hospitals, universities and office complexes, you find large cooling towers that are connected to the air conditioning system:

Wouldn't it be nice to know what all of this equipment is doing? In this article, we will examine air conditioners -- from small to huge -- so you know more about what you're seeing!