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.
Generally, an air exchanger will cost approximately $980 to $1,180 per unit. Other costs to consider are the labor and supplies that are required to install the unit. The installation of an air exchanger normally takes about four hours, with total labor costs running between $262 and $352.