Arizona: Attic Insulation Payback by County

Arizona: 15 counties covered

Arizona spans DOE climate zones 2, 3, 4, 5. Across its 15 counties tracked here, an uninsulated attic saves an estimated $1,149/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.

• Coconino County — zone 5, ~$1,666/yr
• Navajo County — zone 5, ~$1,619/yr
• Apache County — zone 5, ~$1,513/yr
• Yavapai County — zone 4, ~$1,256/yr
• Mohave County — zone 3, ~$1,159/yr
• Pima County — zone 2, ~$1,157/yr
• Graham County — zone 3, ~$1,075/yr
• La Paz County — zone 2, ~$1,043/yr
• Gila County — zone 4, ~$1,007/yr
• Cochise County — zone 3, ~$1,002/yr
• Greenlee County — zone 3, ~$999/yr
• Yuma County — zone 2, ~$981/yr
• Maricopa County — zone 2, ~$972/yr
• Pinal County — zone 2, ~$925/yr
• Santa Cruz County — zone 3, ~$856/yr