The worst thing young adults can do is go to graduate school because they aren't sure what else to do or they can't find jobs. Grad school, after all, is often an extremely long commitment. A Ph.D., for example, can take six years.
The average lifespan for an air conditioner is 10 to 15 years. Some air conditioners last up to 20 years. As interesting as these data points may be, they don't tell you the whole story. The issue is that a variety of factors affect the lifespan of an air conditioner.
During the hot summer months, raising an air conditioner's temperature 6Â°F can save 10 percent on cooling costs.[1] In fact, for every degree the temperature is raised above 72 degrees, cooling costs drop by 3 percent[2] and carbon dioxide emissions decrease by 121 pounds.[3]