Schedule of Normal Life
The Old House Web
Appliances
Life Estimate in Years
Dishwashers
5 to 12
Disposals
5 to 12
Washers and dryers
8 to 12
Water heaters
8 to 12
Refrigerators
15 to 20
Stoves
15 to 20
Gutters and Downspouts
Copper
Life Estimate in Years
Galvanized
15 to 20
Life of home if well-maintained
Heating and Air Conditioning
Life Estimate in Years
Warm air furnace
8 to 12
Heat pumps
8 to 12
Air conditioning compressors
8 to 15
Gas chillers
8 to 15
Hot water boilers
30 to 50
Plumbing
Life Estimate in Years
Gas hot water heater
8 to 12
Electric hot water heater
10-15
Private disposal systems (septic)
15 to 25
Galvanized water pipes
30 to 50
Roofs
Life Estimate in Years
Selvage or asphalt roll
12 to 20
Wood shake and shingle
15 to 20
Asphalt
15 to 20
Fiberglass
15 to 20
Asbestos shingle
30-50
Slate
40-75
(c) 1995 Freddie Mac. All rights reserved. Reproduced with permission from Freddie Mac.
The Old House Web
Appliances
Life Estimate in Years
Dishwashers
5 to 12
Disposals
5 to 12
Washers and dryers
8 to 12
Water heaters
8 to 12
Refrigerators
15 to 20
Stoves
15 to 20
Gutters and Downspouts
Copper
Life Estimate in Years
Galvanized
15 to 20
Life of home if well-maintained
Heating and Air Conditioning
Life Estimate in Years
Warm air furnace
8 to 12
Heat pumps
8 to 12
Air conditioning compressors
8 to 15
Gas chillers
8 to 15
Hot water boilers
30 to 50
Plumbing
Life Estimate in Years
Gas hot water heater
8 to 12
Electric hot water heater
10-15
Private disposal systems (septic)
15 to 25
Galvanized water pipes
30 to 50
Roofs
Life Estimate in Years
Selvage or asphalt roll
12 to 20
Wood shake and shingle
15 to 20
Asphalt
15 to 20
Fiberglass
15 to 20
Asbestos shingle
30-50
Slate
40-75
(c) 1995 Freddie Mac. All rights reserved. Reproduced with permission from Freddie Mac.