{
 "page": "/us/lifespan/windows",
 "built_from": "data/lifespan/facts/windows.json",
 "rows": [
  {
   "type": "Installed windows (DOE project page)",
   "measure": "life expectancy, a floor: greater than (DOE statement, not an average)",
   "value": 30,
   "unit": "years",
   "source": "U.S. Department of Energy, Vacuum Insulation for Windows",
   "url": "https://www.energy.gov/cmei/buildings/articles/vacuum-insulation-windows",
   "data_years": "project page dated June 13, 2014; no data years published",
   "read": "2026-10-29",
   "area": "national",
   "n": "not published by the source",
   "se_points": null,
   "fact_id": "doe-installed-windows-life-expectancy-over-30"
  },
  {
   "type": "Windows in many historic buildings (NPS)",
   "measure": "functioned for more than (NPS statement, a floor, not an average)",
   "value": 100,
   "unit": "years",
   "source": "National Park Service, Weatherization of Historic Buildings: Repair and Upgrade Windows and Doors",
   "url": "https://www.nps.gov/articles/000/weatherization-of-historic-buildings-windows-and-doors.htm",
   "data_years": "page last updated April 11, 2022; no data years published",
   "read": "2026-10-29",
   "area": "national",
   "n": "not published by the source",
   "se_points": null,
   "fact_id": "win-nps-historic-windows-over-100-years"
  },
  {
   "type": "WINFRAME \"Metal (aluminum)\"",
   "measure": "weighted share of households (our tabulation; a share of homes, never a lifetime or an age)",
   "value": 38.4,
   "unit": "percent of households",
   "source": "U.S. Energy Information Administration, 2020 Residential Energy Consumption Survey (RECS), public-use microdata file v7",
   "url": "https://www.eia.gov/consumption/residential/data/2020/csv/recs2020_public_v7.csv",
   "data_years": "2020",
   "read": "2026-10-29",
   "area": "US",
   "n": 18496,
   "se_points": 0.3,
   "fact_id": "recs2020-winframe-aluminum-us"
  },
  {
   "type": "WINFRAME \"Wood\"",
   "measure": "weighted share of households (our tabulation; a share of homes, never a lifetime or an age)",
   "value": 32.6,
   "unit": "percent of households",
   "source": "U.S. Energy Information Administration, 2020 Residential Energy Consumption Survey (RECS), public-use microdata file v7",
   "url": "https://www.eia.gov/consumption/residential/data/2020/csv/recs2020_public_v7.csv",
   "data_years": "2020",
   "read": "2026-10-29",
   "area": "US",
   "n": 18496,
   "se_points": 0.4,
   "fact_id": "recs2020-winframe-wood-us"
  },
  {
   "type": "WINFRAME \"Vinyl\"",
   "measure": "weighted share of households (our tabulation; a share of homes, never a lifetime or an age)",
   "value": 25.8,
   "unit": "percent of households",
   "source": "U.S. Energy Information Administration, 2020 Residential Energy Consumption Survey (RECS), public-use microdata file v7",
   "url": "https://www.eia.gov/consumption/residential/data/2020/csv/recs2020_public_v7.csv",
   "data_years": "2020",
   "read": "2026-10-29",
   "area": "US",
   "n": 18496,
   "se_points": 0.3,
   "fact_id": "recs2020-winframe-vinyl-us"
  },
  {
   "type": "TYPEGLASS \"Single-pane glass\"",
   "measure": "weighted share of households (our tabulation; a share of homes, never a lifetime or an age)",
   "value": 35.2,
   "unit": "percent of households",
   "source": "U.S. Energy Information Administration, 2020 Residential Energy Consumption Survey (RECS), public-use microdata file v7",
   "url": "https://www.eia.gov/consumption/residential/data/2020/csv/recs2020_public_v7.csv",
   "data_years": "2020",
   "read": "2026-10-29",
   "area": "US",
   "n": 18496,
   "se_points": 0.4,
   "fact_id": "recs2020-typeglass-single-pane-us"
  },
  {
   "type": "WINFRAME \"Metal (aluminum)\"",
   "measure": "weighted share of households (our tabulation; a share of homes, never a lifetime or an age)",
   "value": 68.7,
   "unit": "percent of households",
   "source": "U.S. Energy Information Administration, 2020 Residential Energy Consumption Survey (RECS), public-use microdata file v7",
   "url": "https://www.eia.gov/consumption/residential/data/2020/csv/recs2020_public_v7.csv",
   "data_years": "2020",
   "read": "2026-10-29",
   "area": "Florida (state)",
   "n": 655,
   "se_points": 1.8,
   "fact_id": "recs2020-winframe-aluminum-fl"
  },
  {
   "type": "WINFRAME \"Wood\"",
   "measure": "weighted share of households (our tabulation; a share of homes, never a lifetime or an age)",
   "value": 16.6,
   "unit": "percent of households",
   "source": "U.S. Energy Information Administration, 2020 Residential Energy Consumption Survey (RECS), public-use microdata file v7",
   "url": "https://www.eia.gov/consumption/residential/data/2020/csv/recs2020_public_v7.csv",
   "data_years": "2020",
   "read": "2026-10-29",
   "area": "Florida (state)",
   "n": 655,
   "se_points": 1.4,
   "fact_id": "recs2020-winframe-wood-fl"
  },
  {
   "type": "WINFRAME \"Vinyl\"",
   "measure": "weighted share of households (our tabulation; a share of homes, never a lifetime or an age)",
   "value": 11.0,
   "unit": "percent of households",
   "source": "U.S. Energy Information Administration, 2020 Residential Energy Consumption Survey (RECS), public-use microdata file v7",
   "url": "https://www.eia.gov/consumption/residential/data/2020/csv/recs2020_public_v7.csv",
   "data_years": "2020",
   "read": "2026-10-29",
   "area": "Florida (state)",
   "n": 655,
   "se_points": 1.2,
   "fact_id": "recs2020-winframe-vinyl-fl"
  },
  {
   "type": "TYPEGLASS \"Single-pane glass\"",
   "measure": "weighted share of households (our tabulation; a share of homes, never a lifetime or an age)",
   "value": 49.4,
   "unit": "percent of households",
   "source": "U.S. Energy Information Administration, 2020 Residential Energy Consumption Survey (RECS), public-use microdata file v7",
   "url": "https://www.eia.gov/consumption/residential/data/2020/csv/recs2020_public_v7.csv",
   "data_years": "2020",
   "read": "2026-10-29",
   "area": "Florida (state)",
   "n": 655,
   "se_points": 1.7,
   "fact_id": "recs2020-typeglass-single-pane-fl"
  }
 ]
}