Escambia County, AL Insulation Payback
Attic insulation payback for Escambia County, AL
DOE classifies Escambia County as climate zone 3, hot-humid — humid heat for much of the year, with cooling running far more than heating ever does. Its recommended attic R-value for bare joists is R-49. For an attic around 1,000 square feet, closing the gap from R-2 to R-49 costs around $2,820 and saves an estimated $856 a year — payback in roughly 3.3 years. Worth doing on the numbers alone.
The breakdown behind the number
Of that, about $513/year comes from reduced heating and $344/year from reduced cooling load through the ceiling. Escambia County beats 7% of the counties in this 3,162-county dataset on estimated insulation savings. Among the 690 counties DOE places in zone 3, Escambia County ranks 672nd. Against Alabama's own average of $1,001/year, Escambia County runs 14% below that.
Where these numbers come from
The heating and cooling degree days behind this estimate — 1,932 HDD and 2,156 CDD (base 65°F, 1991-2020 normals) — come from BREWTON 3 NNE, AL US, the nearest NOAA station with published normals, 7.1 miles from Escambia County's center. That combined heating-and-cooling load ranks Escambia County 3064th nationally by total degree days — the 3th percentile. DOE also classifies Escambia County as moisture regime A (humid) - ask a local contractor whether that changes the vapor-barrier approach for this job.
The smaller top-up scenario
A shallower starting point changes the math: with R-11 already down, only the gap to R-38 needs filling, at roughly $1,620 for an estimated $115/year saved (~14-year payback). It is close - the payback only just fits a reasonable timeframe.
Getting it done in Escambia County
Actual quotes will vary by attic access, existing debris, and whether the job needs air sealing first. Treat the $2,820 figure above as a planning number for Escambia 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.