Life Expectancy

Component

Roof Covering

> asphalt standard shingle

> asphalt premium shingle

> wood shingle
> concrete / clay tile

> asbestos cement

> slate tile
> roll roofing
> tar & gravel

> metal

Average Life (yrs.)

 

12 - 15

15 - 30

10 - 20

20 - 40

40 - 80

40 - 80

5 - 15

15 - 25

60

Heating

> forced air furnace
> oil tank
> water / steam boiler - welded steel

> water / steam boiler - cast iron
> water / steam circulating pump

Cooling

> central air
> heat pump
> window air conditioning

Plumbing

> galvanized water pipe

> hot water heater
> septic / sewer pump

> well pump

Appliances

> dishwasher
> dryer
> garbage disposal

> oven / range
> washing machine

10 -25

40

15 - 30

30 - 50

10 - 20

10 - 15

10 - 15

10 - 20

20 - 25

5 - 15

5 - 10

10

5 - 12

10 -25

5 - 12

15 - 20

5 - 15