Hempstead County, AR Insulation Payback
Attic insulation payback for Hempstead County, AR
Hempstead County, Arkansas is zone 3 under DOE's climate map (Mixed-Humid), which means a genuine mix of cold winters and humid summers, with neither one dominating the bill. An uninsulated attic there should be built 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 $1,108 a year in heating and cooling — a payback around 2.5 years. Hard to find a home improvement with a faster payback than this.
The breakdown behind the number
Of that, about $783/year comes from reduced heating and $325/year from reduced cooling load through the ceiling. Hempstead County beats 25% of the counties in this 3,162-county dataset on estimated insulation savings. Among the 690 counties DOE places in zone 3, Hempstead County ranks 229th. Against Arkansas's own average of $1,185/year, Hempstead County runs 6% below that.
The climate data behind this
The heating and cooling degree days behind this estimate — 2,952 HDD and 2,040 CDD (base 65°F, 1991-2020 normals) — come from HOPE 3 NE, AR US, the nearest NOAA station with published normals, 6.5 miles from Hempstead County's center. By total degree days, Hempstead County sits at the 26th percentile nationally. DOE also classifies Hempstead County as moisture regime A (humid) - ask a local contractor whether that changes the vapor-barrier approach for this job.
If the attic isn't bare
If Hempstead 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 $149/year — payback about 10.9 years. It is close - the payback only just fits a reasonable timeframe.
Next steps for a Hempstead 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 Hempstead County's estimated $1,108/year on the line.
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.