Greenlee County, AZ Insulation Payback
Attic insulation payback for Greenlee County, AZ
Greenlee County sits in IECC climate zone 3 (Hot-Dry) — scorching, dry summers where heat radiating straight through the roof does most of the damage. For a currently uninsulated attic, DOE and ENERGY STAR recommend building up to R-49. Going from R-2 to the recommended R-49 costs roughly $2,820 installed for a typical attic (about 1,000 sq ft), and pays for itself in about 2.8 years at an estimated $999/year saved. Hard to find a home improvement with a faster payback than this.
Where the savings come from
Of that, about $538/year comes from reduced heating and $461/year from reduced cooling load through the ceiling. Greenlee County beats 17% of the counties in this 3,162-county dataset on estimated insulation savings. Among the 690 counties DOE places in zone 3, Greenlee County ranks 471st. Against Arizona's own average of $1,149/year, Greenlee County runs 13% below that.
Greenlee County's actual weather, not a national average
Greenlee County's climate figures — 2,026 heating and 2,895 cooling degree days a year — are read from CLIFTON, AZ US, 13.2 miles away, NOAA's nearest 1991-2020 normals station. That combined heating-and-cooling load ranks Greenlee County 2422nd nationally by total degree days — the 23th percentile. DOE also classifies Greenlee County as moisture regime B (dry) - ask a local contractor whether that changes the vapor-barrier approach for this job.
If the attic isn't bare
Already have a few inches up there? Topping R-11 up to R-38 runs about $1,620 for about $135/year saved — roughly 12 years to break even. It is close - the payback only just fits a reasonable timeframe.
Quotes and materials for this job
Real bids depend on how easy the attic is to reach and whether old insulation needs removing first, so treat $2,820 as a starting estimate for a Greenlee County job, not a quote. Expect at least a $600 minimum charge from most contractors.
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.