Maine: Attic Insulation Payback by County

Maine: 16 counties covered

Maine spans DOE climate zones 6, 7. Across its 16 counties tracked here, an uninsulated attic saves an estimated $2,159/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.

• Franklin County — zone 6, ~$2,553/yr
• Somerset County — zone 6, ~$2,484/yr
• Aroostook County — zone 7, ~$2,388/yr
• Piscataquis County — zone 6, ~$2,319/yr
• Penobscot County — zone 6, ~$2,266/yr
• Oxford County — zone 6, ~$2,258/yr
• Washington County — zone 6, ~$2,117/yr
• Waldo County — zone 6, ~$2,114/yr
• Sagadahoc County — zone 6, ~$2,092/yr
• Hancock County — zone 6, ~$2,081/yr
• York County — zone 6, ~$2,043/yr
• Androscoggin County — zone 6, ~$2,022/yr
• Kennebec County — zone 6, ~$2,015/yr
• Cumberland County — zone 6, ~$1,979/yr
• Lincoln County — zone 6, ~$1,948/yr
• Knox County — zone 6, ~$1,858/yr