Michigan: Attic Insulation Payback by County

Michigan: 83 counties covered

Michigan spans DOE climate zones 5, 6, 7. Across its 83 counties tracked here, an uninsulated attic saves an estimated $2,064/year on average once topped up to the recommended R-value — actual savings depend on each county's own heating and cooling degree days, shown below.

• Iron County — zone 7, ~$2,610/yr
• Baraga County — zone 7, ~$2,575/yr
• Gogebic County — zone 7, ~$2,553/yr
• Marquette County — zone 6, ~$2,503/yr
• Houghton County — zone 7, ~$2,492/yr
• Keweenaw County — zone 7, ~$2,443/yr
• Mackinac County — zone 7, ~$2,392/yr
• Dickinson County — zone 6, ~$2,376/yr
• Luce County — zone 7, ~$2,340/yr
• Delta County — zone 6, ~$2,322/yr
• Schoolcraft County — zone 7, ~$2,312/yr
• Alger County — zone 6, ~$2,301/yr
• Otsego County — zone 6, ~$2,280/yr
• Chippewa County — zone 7, ~$2,276/yr
• Menominee County — zone 6, ~$2,276/yr
• Kalkaska County — zone 6, ~$2,267/yr
• Crawford County — zone 6, ~$2,257/yr
• Ontonagon County — zone 7, ~$2,257/yr
• Montmorency County — zone 6, ~$2,235/yr
• Alcona County — zone 6, ~$2,232/yr
• Presque Isle County — zone 6, ~$2,226/yr
• Missaukee County — zone 6, ~$2,212/yr
• Cheboygan County — zone 6, ~$2,195/yr
• Emmet County — zone 6, ~$2,174/yr
• Roscommon County — zone 6, ~$2,166/yr
• Lake County — zone 6, ~$2,165/yr
• Wexford County — zone 6, ~$2,164/yr
• Ogemaw County — zone 6, ~$2,162/yr
• Alpena County — zone 6, ~$2,160/yr
• Osceola County — zone 6, ~$2,149/yr
• Oscoda County — zone 6, ~$2,115/yr
• Charlevoix County — zone 6, ~$2,106/yr
• Mecosta County — zone 6, ~$2,103/yr
• Iosco County — zone 6, ~$2,058/yr
• Clare County — zone 6, ~$2,054/yr
• Gladwin County — zone 6, ~$2,054/yr
• Huron County — zone 6, ~$2,054/yr
• Arenac County — zone 6, ~$2,044/yr
• Leelanau County — zone 6, ~$2,038/yr
• Sanilac County — zone 6, ~$2,011/yr
• Antrim County — zone 6, ~$1,996/yr
• Mason County — zone 6, ~$1,994/yr
• Oceana County — zone 6, ~$1,994/yr
• Tuscola County — zone 5, ~$1,990/yr
• Grand Traverse County — zone 6, ~$1,985/yr
• Newaygo County — zone 6, ~$1,985/yr
• Gratiot County — zone 5, ~$1,973/yr
• Montcalm County — zone 5, ~$1,971/yr
• Ionia County — zone 5, ~$1,970/yr
• Benzie County — zone 6, ~$1,964/yr
• Bay County — zone 5, ~$1,963/yr
• Isabella County — zone 6, ~$1,951/yr
• Lapeer County — zone 5, ~$1,948/yr
• Eaton County — zone 5, ~$1,942/yr
• Genesee County — zone 5, ~$1,937/yr
• Shiawassee County — zone 5, ~$1,929/yr
• Livingston County — zone 5, ~$1,928/yr
• Barry County — zone 5, ~$1,927/yr
• Muskegon County — zone 5, ~$1,920/yr
• Midland County — zone 5, ~$1,919/yr
• St. Clair County — zone 5, ~$1,918/yr
• Saginaw County — zone 5, ~$1,916/yr
• Hillsdale County — zone 5, ~$1,913/yr
• Manistee County — zone 6, ~$1,910/yr
• Cass County — zone 5, ~$1,893/yr
• Oakland County — zone 5, ~$1,892/yr
• Washtenaw County — zone 5, ~$1,886/yr
• Branch County — zone 5, ~$1,884/yr
• Kent County — zone 5, ~$1,883/yr
• St. Joseph County — zone 5, ~$1,864/yr
• Clinton County — zone 5, ~$1,860/yr
• Macomb County — zone 5, ~$1,853/yr
• Ottawa County — zone 5, ~$1,847/yr
• Jackson County — zone 5, ~$1,832/yr
• Calhoun County — zone 5, ~$1,828/yr
• Ingham County — zone 5, ~$1,828/yr
• Wayne County — zone 5, ~$1,820/yr
• Lenawee County — zone 5, ~$1,818/yr
• Kalamazoo County — zone 5, ~$1,805/yr
• Monroe County — zone 5, ~$1,792/yr
• Berrien County — zone 5, ~$1,791/yr
• Allegan County — zone 5, ~$1,690/yr
• Van Buren County — zone 5, ~$1,690/yr