Ouachita County, AR Insulation Payback
Ouachita County attic insulation, by the numbers
DOE classifies Ouachita 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. 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 2.5 years at an estimated $1,107/year saved. Topping up the attic pays for itself fast here.
Heating vs. cooling in Ouachita County
Split it out and it's roughly $783 a year on the heating side, $324 on cooling. By estimated insulation savings, Ouachita County lands in the 25th percentile nationally. Zone 3 alone covers 690 counties in this dataset, and Ouachita County comes in 230th by savings. Arkansas averages $1,185/year across the counties tracked here; Ouachita County comes in 7% lower.
Where these numbers come from
The heating and cooling degree days behind this estimate — 2,950 HDD and 2,036 CDD (base 65°F, 1991-2020 normals) — come from CAMDEN 1, AR US, the nearest NOAA station with published normals, 3.2 miles from Ouachita County's center. Combined heating and cooling load puts Ouachita County in the 25th percentile of this 3,162-county dataset. One local detail the R-value alone won't tell you: Ouachita County sits in moisture regime A (humid), which can affect the vapor-barrier choice.
The smaller top-up scenario
If Ouachita 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. Call this borderline rather than a clear win.
Getting it done in Ouachita 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 Ouachita County, not a bid - contractors typically charge a $600 minimum regardless of job size.
Where these figures come from
Ouachita 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.