Average Life Expectancies of Systems
|
| Appliances | 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 |
| Microwave ovens | 8 to 12 |
| Trash compactors | 10 to 14 |
| | |
| Gutters and Downspouts | Years |
|---|
| Galvanized | 5 to 20 |
| Copper | Life of home if well-maintained |
| | |
| Heating and Air Conditioning | Years |
|---|
| Warm air furnace | 8 to 12 |
| Heat pumps | 8 to 12 |
| Air conditioning compressors | 8 to 15 |
| Hot water boilers | 30 to 50 |
| | |
| Plumbing | Years |
|---|
| Gas hot water heater | 8 to 12 |
| Electric hot water heater | 10 to 15 |
| Private disposal systems (septic) | 15 to 25 |
| Galvanized water pipes | 30 to 50 |
| | |
| Roofs | 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 to 50 |
| Slate | 40 to 75 |
