Gila County, AZ Insulation Payback
Attic insulation payback for Gila County, AZ
Gila County sits in IECC climate zone 4 (Mixed-Dry) — dry heat in summer giving way to a properly cold winter. For a currently uninsulated attic, DOE and ENERGY STAR recommend building up to R-60. For an attic around 1,000 square feet, closing the gap from R-2 to R-60 costs around $3,480 and saves an estimated $1,007 a year — payback in roughly 3.5 years. Worth doing on the numbers alone.
Where the savings come from
Of that, about $435/year comes from reduced heating and $572/year from reduced cooling load through the ceiling. Gila County beats 17% of the counties in this 3,162-county dataset on estimated insulation savings. Among the 825 counties DOE places in zone 4, Gila County ranks 823rd. Against Arizona's own average of $1,149/year, Gila County runs 12% below that.
The climate data behind this
NOAA's ROOSEVELT 1 S, AZ US station, 19.6 miles from Gila County, supplies the 1,627 HDD and 3,559 CDD this estimate runs on. That combined heating-and-cooling load ranks Gila County 2189th nationally by total degree days — the 31th percentile. DOE also classifies Gila County as moisture regime B (dry) - ask a local contractor whether that changes the vapor-barrier approach for this job.
The smaller top-up scenario
Already have a few inches up there? Topping R-11 up to R-49 runs about $2,280 for about $147/year saved — roughly 15.5 years to break even. It is close - the payback only just fits a reasonable timeframe.
Getting it done in Gila County
Actual quotes will vary by attic access, existing debris, and whether the job needs air sealing first. Treat the $3,480 figure above as a planning number for Gila County, not a bid - contractors typically charge a $600 minimum regardless of job size.
More on how this was built
Nothing here is a guess: the methodology guide names the DOE climate map and NOAA station data behind every number on this page. See the DIY vs. contractor guide for whether a job this size is realistic to do yourself.