New Jersey: Attic Insulation Payback by County

New Jersey: 21 counties covered

New Jersey spans DOE climate zones 4, 5. Across its 21 counties tracked here, an uninsulated attic saves an estimated $1,541/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.

• Warren County — zone 5, ~$1,722/yr
• Sussex County — zone 5, ~$1,720/yr
• Somerset County — zone 5, ~$1,663/yr
• Morris County — zone 5, ~$1,645/yr
• Passaic County — zone 5, ~$1,641/yr
• Hunterdon County — zone 5, ~$1,623/yr
• Essex County — zone 4, ~$1,600/yr
• Ocean County — zone 4, ~$1,563/yr
• Mercer County — zone 5, ~$1,539/yr
• Middlesex County — zone 4, ~$1,530/yr
• Hudson County — zone 4, ~$1,505/yr
• Monmouth County — zone 4, ~$1,497/yr
• Cumberland County — zone 4, ~$1,488/yr
• Burlington County — zone 4, ~$1,480/yr
• Union County — zone 4, ~$1,479/yr
• Camden County — zone 4, ~$1,473/yr
• Gloucester County — zone 4, ~$1,473/yr
• Bergen County — zone 5, ~$1,468/yr
• Salem County — zone 4, ~$1,461/yr
• Atlantic County — zone 4, ~$1,439/yr
• Cape May County — zone 4, ~$1,347/yr