Massachusetts: Attic Insulation Payback by County

Massachusetts: 14 counties covered

Massachusetts spans DOE climate zone 5. Across its 14 counties tracked here, an uninsulated attic saves an estimated $1,728/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.

• Berkshire County — zone 5, ~$2,003/yr
• Hampshire County — zone 5, ~$1,875/yr
• Franklin County — zone 5, ~$1,870/yr
• Worcester County — zone 5, ~$1,852/yr
• Hampden County — zone 5, ~$1,801/yr
• Essex County — zone 5, ~$1,800/yr
• Middlesex County — zone 5, ~$1,779/yr
• Bristol County — zone 5, ~$1,660/yr
• Dukes County — zone 5, ~$1,628/yr
• Barnstable County — zone 5, ~$1,615/yr
• Norfolk County — zone 5, ~$1,614/yr
• Suffolk County — zone 5, ~$1,611/yr
• Plymouth County — zone 5, ~$1,549/yr
• Nantucket County — zone 5, ~$1,535/yr