Calhoun County, AR Insulation Payback
Calhoun County attic insulation, by the numbers
DOE classifies Calhoun County as climate zone 3, mixed-humid — real heating and real cooling seasons both, roughly balanced across the year. Its recommended attic R-value for bare joists is 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 $1,069 a year in heating and cooling — a payback around 2.6 years. Topping up the attic pays for itself fast here.
The breakdown behind the number
Split it out and it's roughly $731 a year on the heating side, $339 on cooling. By estimated insulation savings, Calhoun County lands in the 22th percentile nationally. Zone 3 alone covers 690 counties in this dataset, and Calhoun County comes in 308th by savings. Arkansas averages $1,185/year across the counties tracked here; Calhoun County comes in 10% lower.
Calhoun County's actual weather, not a national average
NOAA's CALION L&D, AR US station, 17.6 miles from Calhoun County, supplies the 2,754 HDD and 2,124 CDD this estimate runs on. Combined heating and cooling load puts Calhoun County in the 22th percentile of this 3,162-county dataset. One local detail the R-value alone won't tell you: Calhoun County sits in moisture regime A (humid), which can affect the vapor-barrier choice.
If the attic isn't bare
If Calhoun 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 $144/year — payback about 11.2 years. Call this borderline rather than a clear win.
Next steps for a Calhoun County attic
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 Calhoun County job, not a quote. Expect at least a $600 minimum charge from most contractors.
Where these figures come from
Calhoun 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.