Lifespan

• Of the major household appliances, gas ranges have the longest life expectancy, which is approximately 15 years, according to a 2007 National Association of Home Builders/Bank of America study.
  
  

Increasing Life Expectancy

• The life expectancy of a typical household appliance depends to a great extent on the use it receives and on the care you give it. Read and follow the manufacturer's instructions. Maintain stove and oven efficiency by cleaning them regularly with nonabrasive cleaners. Lowe's recommends wiping spills off immediately, particularly sugary ones, which can adhere to the cooktop as they cool, causing pitting or permanent marks on porcelain and enamel finishes. Use hot, sudsy water. Consumer Reports' Retirement Guy advises checking the burners regularly and avoiding clogs by cleaning burner ports with a needle. Avoid touching the igniter, which could be damaged.
  
  

Checking the Oven

• Oven vents should also be cleaned regularly using a degreaser and soapy water, according to Lowe's. Besides keeping the oven interior clean, check seals near the oven's door, which can become torn. Also check the door's hinges, which can eventually bend. The tearing and bending can allow heat to escape, causing the oven to work harder and longer.
  
  

Replacement

• A good time to replace a stove is when repairs will cost more than half the price of a new one, according to Consumer Reports.