Lifespan for home systems and appliances

Item Expected life (years)

Central A/C 15+
Window A/C 10
A/C compressor 15

Forced-air furnace 15
Gas or oil furnace 18

Gas water heater 11 to 13
Electric water heater 14

Microwave ovens 11
Electric ranges 17
Gas ranges 19
Gas ovens 14
Exhaust fans 20

Refrigerators 17
Freezers 16
Dishwashers 10

Disposal 10
Trash compactors 10

Clothes washers 13
Dryers 14


Source: National Association of Home Builders