North Carolina: Attic Insulation Payback by County

North Carolina: 99 counties covered

North Carolina spans DOE climate zones 3, 4, 5. Across its 99 counties tracked here, an uninsulated attic saves an estimated $1,169/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.

• Avery County — zone 5, ~$1,742/yr
• Swain County — zone 4, ~$1,633/yr
• Watauga County — zone 5, ~$1,569/yr
• Ashe County — zone 5, ~$1,522/yr
• Alleghany County — zone 5, ~$1,481/yr
• Madison County — zone 4, ~$1,366/yr
• Surry County — zone 4, ~$1,336/yr
• Mitchell County — zone 5, ~$1,326/yr
• Yancey County — zone 5, ~$1,326/yr
• Yadkin County — zone 4, ~$1,307/yr
• Graham County — zone 4, ~$1,290/yr
• Davie County — zone 4, ~$1,288/yr
• Iredell County — zone 4, ~$1,270/yr
• Transylvania County — zone 4, ~$1,269/yr
• Wilkes County — zone 4, ~$1,262/yr
• Clay County — zone 4, ~$1,260/yr
• Henderson County — zone 4, ~$1,259/yr
• Stokes County — zone 4, ~$1,254/yr
• Jackson County — zone 4, ~$1,249/yr
• Macon County — zone 4, ~$1,248/yr
• Cherokee County — zone 4, ~$1,247/yr
• Rockingham County — zone 4, ~$1,238/yr
• Caldwell County — zone 4, ~$1,237/yr
• Person County — zone 4, ~$1,234/yr
• Caswell County — zone 4, ~$1,232/yr
• Franklin County — zone 4, ~$1,223/yr
• Durham County — zone 4, ~$1,220/yr
• Northampton County — zone 4, ~$1,220/yr
• Burke County — zone 4, ~$1,218/yr
• Hertford County — zone 4, ~$1,216/yr
• Buncombe County — zone 4, ~$1,213/yr
• Alamance County — zone 4, ~$1,206/yr
• Granville County — zone 4, ~$1,205/yr
• McDowell County — zone 4, ~$1,199/yr
• Rutherford County — zone 4, ~$1,199/yr
• Gates County — zone 4, ~$1,192/yr
• Alexander County — zone 4, ~$1,191/yr
• Cleveland County — zone 4, ~$1,186/yr
• Chatham County — zone 4, ~$1,178/yr
• Forsyth County — zone 4, ~$1,178/yr
• Rowan County — zone 3, ~$1,173/yr
• Guilford County — zone 4, ~$1,171/yr
• Vance County — zone 4, ~$1,162/yr
• Davidson County — zone 3, ~$1,160/yr
• Randolph County — zone 3, ~$1,160/yr
• Harnett County — zone 4, ~$1,158/yr
• Orange County — zone 4, ~$1,156/yr
• Cabarrus County — zone 3, ~$1,154/yr
• Duplin County — zone 3, ~$1,152/yr
• Edgecombe County — zone 3, ~$1,150/yr
• Nash County — zone 4, ~$1,145/yr
• Halifax County — zone 4, ~$1,139/yr
• Hoke County — zone 3, ~$1,133/yr
• Wake County — zone 4, ~$1,132/yr
• Catawba County — zone 4, ~$1,131/yr
• Lincoln County — zone 4, ~$1,128/yr
• Warren County — zone 4, ~$1,128/yr
• Union County — zone 3, ~$1,125/yr
• Stanly County — zone 3, ~$1,124/yr
• Bertie County — zone 4, ~$1,123/yr
• Lee County — zone 4, ~$1,118/yr
• Johnston County — zone 3, ~$1,115/yr
• Polk County — zone 4, ~$1,113/yr
• Wilson County — zone 3, ~$1,106/yr
• Moore County — zone 3, ~$1,103/yr
• Greene County — zone 3, ~$1,093/yr
• Mecklenburg County — zone 3, ~$1,093/yr
• Gaston County — zone 3, ~$1,092/yr
• Currituck County — zone 3, ~$1,090/yr
• Montgomery County — zone 3, ~$1,090/yr
• Perquimans County — zone 3, ~$1,090/yr
• Cumberland County — zone 3, ~$1,089/yr
• Anson County — zone 3, ~$1,088/yr
• Dare County — zone 3, ~$1,087/yr
• Martin County — zone 3, ~$1,087/yr
• Tyrrell County — zone 3, ~$1,087/yr
• Pitt County — zone 3, ~$1,085/yr
• Sampson County — zone 3, ~$1,085/yr
• Richmond County — zone 3, ~$1,081/yr
• Jones County — zone 3, ~$1,076/yr
• Bladen County — zone 3, ~$1,061/yr
• Camden County — zone 3, ~$1,059/yr
• Pasquotank County — zone 3, ~$1,059/yr
• Chowan County — zone 3, ~$1,054/yr
• Columbus County — zone 3, ~$1,054/yr
• Scotland County — zone 3, ~$1,052/yr
• Hyde County — zone 3, ~$1,044/yr
• Washington County — zone 3, ~$1,042/yr
• Pender County — zone 3, ~$1,039/yr
• Wayne County — zone 3, ~$1,037/yr
• Onslow County — zone 3, ~$1,034/yr
• Robeson County — zone 3, ~$1,025/yr
• Pamlico County — zone 3, ~$1,020/yr
• Craven County — zone 3, ~$1,018/yr
• Beaufort County — zone 3, ~$1,012/yr
• Lenoir County — zone 3, ~$985/yr
• New Hanover County — zone 3, ~$985/yr
• Carteret County — zone 3, ~$946/yr
• Brunswick County — zone 3, ~$942/yr