When Do Home Systems Start to Fail in Production Homes?

In many production homes, especially those built within the last 20 to 30 years, major systems tend to follow predictable patterns. Because builders often use similar materials and equipment, it’s easier to estimate when key systems may start to fail. Understanding these timelines helps you better prepare your buyers and avoid surprises during the inspection.

  • Furnace: 20–25 years

  • Air Conditioner: 12–15 years

  • Water Heater (Tank): ~12 years

  • Roof (Asphalt Shingles): 20–25 years

  • Plumbing (PEX or Copper): 40–50+ years

  • Electrical Panel: 30–40 years (unless it’s a known defective brand like FPE or Zinsco)

Even if these systems are still functioning, an inspection report might flag them as "at or near the end of useful life." You can check the age of HVAC and water heaters using the serial number - just decode it at Building Intelligence Center!

PRO TIP: That’s your cue to shift the conversation from “problem” to planned replacement. - Free Appliance Life Expectancy Guide