Arkansas County, AR Insulation Payback
Arkansas County attic insulation, by the numbers
Arkansas County sits in IECC climate zone 3 (Mixed-Humid) — a genuine mix of cold winters and humid summers, with neither one dominating the bill. For a currently uninsulated attic, DOE and ENERGY STAR recommend building up to R-49. Topping up a typical 1,000-square-foot attic from bare joists (R-2) to R-49 runs an estimated $2,820, and saves about $1,122 a year in heating and cooling — a payback around 2.5 years. Topping up the attic pays for itself fast here.
Where the savings come from
Split it out and it's roughly $766 a year on the heating side, $356 on cooling. By estimated insulation savings, Arkansas County lands in the 26th percentile nationally. Zone 3 alone covers 690 counties in this dataset, and Arkansas County comes in 204th by savings. Arkansas averages $1,185/year across the counties tracked here; Arkansas County comes in 5% lower.
The climate data behind this
NOAA's STUTTGART 9 ESE, AR US station, 13 miles from Arkansas County, supplies the 2,886 HDD and 2,236 CDD this estimate runs on. By total degree days, Arkansas County sits at the 29th percentile nationally. One local detail the R-value alone won't tell you: Arkansas County sits in moisture regime A (humid), which can affect the vapor-barrier choice.
If the attic isn't bare
If Arkansas County's attic already has 3-4 inches of old insulation (about R-11) rather than bare joists, the recommended target drops to R-38. That smaller top-up costs around $1,620 and saves an estimated $151/year — payback about 10.7 years. Call this borderline rather than a clear win.
Next steps for a Arkansas County attic
Get more than one quote before committing. Attic access and any needed air sealing move the price around, and most contractors won't take a job below roughly $600 regardless of size - worth asking upfront given Arkansas County's estimated $1,122/year on the line.
Where these figures come from
Arkansas County's R-49 target and its degree-day figures both come from named federal sources - see the methodology guide for exactly which ones. The guide to what R-value actually means explains why R-49 is the target here specifically.