Typical service life by system
Here is roughly when common home systems start to need attention. Treat the year as the point to start budgeting and getting quotes, not the day it will fail.
- Pool: start expecting work around 10 years. Pool liners, heaters, and pumps wear out around 10–15 years.
- Battery: start expecting work around 10 years. Home batteries typically last about 10 years.
- Solar: start expecting work around 12 years. Solar inverters usually need replacing around 10–12 years.
- Deck: start expecting work around 12 years. Wood decks usually need rebuilding around 12–20 years.
- Fence: start expecting work around 12 years. Most fences need replacing around 12–20 years.
- Plumbing: start expecting work around 12 years. Water heaters last ~10–12 years; older supply lines fail too.
- HVAC: start expecting work around 13 years. Furnaces and AC units typically last 13–18 years.
- Generator: start expecting work around 15 years. Standby generators typically last 15–20 years.
- Addition: start expecting work around 15 years. Kitchens and baths are typically redone every 15–20 years.
- Roofing: start expecting work around 18 years. Asphalt roofs typically last about 20 years.
- Windows: start expecting work around 18 years. Windows and siding typically last 18–25 years.
- Well: start expecting work around 18 years. Well pumps and systems age out around 15–25 years.
- Electrical: start expecting work around 25 years. Panels and service entrances age out around 25–40 years.
Why planning ahead pays off
Replacing a system on your own timeline is almost always cheaper and less stressful than replacing it after it fails. Emergency work means whoever is available, at whatever price, on their schedule. Planned work means you can compare proven contractors, line up quotes, and pick the right time of year.
Knowing the age of your roof, HVAC, and water heater also helps when you buy or sell. A buyer who knows a roof has a few years left can plan for it. A seller who has documentation of recent work has a real selling point.
How to find proven help when the time comes
When a system is getting close, give yourself a few months. Use that time to find contractors with recent, permit-verified work in that trade near you, get comparable quotes, and schedule the job for a convenient season rather than the middle of a heat wave or a storm.
These ranges are averages. A well-maintained roof can outlast its estimate, and a neglected one can fail early. Use the numbers to plan, and inspect when you get close to the range rather than waiting for a leak.
These are typical service lives, not predictions for your specific home. Local climate, install quality, and maintenance all move the date. When in doubt, get an inspection.