{
  "@context": "https://schema.org",
  "@type": "Dataset",
  "name": "HomeScore Home System Lifespan Dataset 2026",
  "alternateName": "HomeScore Lifespan Database",
  "description": "Average, best-case, and worst-case service lifespans for 12 major residential home systems. Compiled from manufacturer specifications, industry benchmarks (NAHB, DOE, EPA), and the HomeScore Replacement Curve\u2122 model.",
  "url": "https://myhomescore.app/data/lifespans.json",
  "sameAs": "https://myhomescore.app/data/lifespan-database",
  "version": "v2026.1",
  "datePublished": "2026-01-15",
  "dateModified": "2026-06-17",
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "creator": {
    "@type": "Organization",
    "name": "HomeScore",
    "url": "https://myhomescore.app"
  },
  "publisher": {
    "@type": "Organization",
    "name": "HomeScore",
    "url": "https://myhomescore.app"
  },
  "keywords": ["home maintenance", "system lifespan", "replacement cost", "homeowner planning", "HVAC lifespan", "roof lifespan"],
  "data": [
    { "system": "Roof — architectural asphalt shingles", "avgYears": 25, "bestYears": 30, "worstYears": 18, "premiumGapYears": 12 },
    { "system": "Roof — standing seam metal", "avgYears": 50, "bestYears": 70, "worstYears": 35, "premiumGapYears": 35 },
    { "system": "Roof — slate", "avgYears": 100, "bestYears": 150, "worstYears": 75, "premiumGapYears": 75 },
    { "system": "HVAC — central AC + gas furnace", "avgYears": 16, "bestYears": 22, "worstYears": 10, "premiumGapYears": 12 },
    { "system": "HVAC — heat pump (air-source)", "avgYears": 15, "bestYears": 20, "worstYears": 10, "premiumGapYears": 10 },
    { "system": "HVAC — mini-split / ductless", "avgYears": 18, "bestYears": 25, "worstYears": 12, "premiumGapYears": 13 },
    { "system": "Water heater — tank (gas or electric)", "avgYears": 10, "bestYears": 14, "worstYears": 7, "premiumGapYears": 7 },
    { "system": "Water heater — tankless", "avgYears": 20, "bestYears": 25, "worstYears": 15, "premiumGapYears": 10 },
    { "system": "Water heater — heat pump", "avgYears": 14, "bestYears": 18, "worstYears": 10, "premiumGapYears": 8 },
    { "system": "Electrical panel — 200A modern", "avgYears": 35, "bestYears": 50, "worstYears": 20, "premiumGapYears": 30 },
    { "system": "Plumbing supply — copper", "avgYears": 60, "bestYears": 90, "worstYears": 40, "premiumGapYears": 50 },
    { "system": "Plumbing supply — PEX", "avgYears": 50, "bestYears": 70, "worstYears": 25, "premiumGapYears": 45 },
    { "system": "Sewer line — cast iron", "avgYears": 75, "bestYears": 100, "worstYears": 50, "premiumGapYears": 50 },
    { "system": "Sewer line — PVC", "avgYears": 100, "bestYears": 150, "worstYears": 75, "premiumGapYears": 75 },
    { "system": "Windows — vinyl double-pane", "avgYears": 22, "bestYears": 30, "worstYears": 15, "premiumGapYears": 15 },
    { "system": "Windows — fiberglass double-pane", "avgYears": 35, "bestYears": 50, "worstYears": 25, "premiumGapYears": 25 },
    { "system": "Garage door — sectional steel", "avgYears": 25, "bestYears": 35, "worstYears": 15, "premiumGapYears": 20 },
    { "system": "Driveway — asphalt", "avgYears": 22, "bestYears": 30, "worstYears": 12, "premiumGapYears": 18 },
    { "system": "Driveway — concrete", "avgYears": 35, "bestYears": 50, "worstYears": 25, "premiumGapYears": 25 },
    { "system": "Deck — pressure-treated wood", "avgYears": 18, "bestYears": 25, "worstYears": 10, "premiumGapYears": 15 },
    { "system": "Deck — composite (Trex/AZEK)", "avgYears": 30, "bestYears": 50, "worstYears": 20, "premiumGapYears": 30 }
  ]
}