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.
Measuring Cooling Capacity. The cooling capacity of an air conditioner is measured in tons. In regards to cooling, 1 ton is equal to 12,000 BTU's (British Thermal Units). A standard air conditioner ranges in size, from smallest to largest:1  18 = 1.5 Ton (18,000 BTU). 2  24 = 2.0 Ton (24,000 BTU). 3  30 = 2.5 Ton (30,000 BTU).easuring Cooling Capacity. The cooling capacity of an air conditioner is measured in tons. In regards to cooling, 1 ton is equal to 12,000 BTU's (British Thermal Units). A standard air conditioner ranges in size, from smallest to largest: 1  18 = 1.5 Ton (18,000 BTU). 2  24 = 2.0 Ton (24,000 BTU).