Find out how long those kitchen appliances, flooring, fixtures, and more should really last.

A new study by the National Association of Realtors provides some insight on the average useful life of more than 100 household materials and appliances. Of course, the true longevity of any household material depends on maintenance, use, quality of installation and climate conditions, so use these averages as a general guide. The full report can be viewed at Realtor.org/realtormag.com in the Home & Design section.

100 Years or More

• Brick siding: Lifetime of the home
• All wooden floors: Lifetime of the home
• Cellulose insulation material: 100-plus years

50-100 Years

• Slate, copper, and clay and concrete roofs: 50+ years
• Copper gutters: 50+ years
• Kitchen cabinets: Up to 50 years
• Modified acrylic kitchen sinks: 50 years
• Vinyl floors: 50 years

30-50 Years

• Thermostats: 35 years
• Wooden windows: 30 years
• Wood shake roofs: 30 years
• French interior doors: 30–50 years

10-20 Years

• Built-in audio system: 20 years
• Aluminum windows: 15–20 years
• Asphalt shingle roofs: 20 years
• Faucets, kitchen sinks: 15 years
• Gas ranges: 15 years
• Cultured marble countertops: 20 years
• Dryers and refrigerators: 13 years
• Air conditioning units: 10–15 years

10-20 Years (continued)

• Lighting controls: 10+ years
• Interior and exterior paints: 15+ years
• Electric or gas water heaters: 10 years
• Air conditioners: 10–15 years
• Furnaces: 15–20 years

5-10 Years

• Security systems: 5–10 years
• Heat and smoke detectors: 5–10 years
• Dishwashers: 9 years
• Microwave ovens: 9 years
• Carpet: 8–10 years