The National Association of Home Builders and Bank of America, did research entitled the Study of Life Expectancy of Home Components.
Here is a list of their findings.
* Cabinets: 50 years
* Compactor: 6 years
* Countertop (natural stone): Lifetime
* Countertop (marble): 20 years
* Dishwasher: 9 years
* Faucet: 15 years
* Microwave Oven: 9 years
* Range, Electric: 13 years
* Range, Gas: 15 years
* Refrigerator: 13 years
* Sink (enamel steel): 5-10 years