Yell County, AR Insulation Payback
Yell County, AR: what topping up your attic actually costs
Yell County sits in IECC climate zone 3 (Mixed-Humid) — heating load in winter and cooling load in summer, both worth taking seriously here. 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 $1,150 a year in heating and cooling — a payback around 2.5 years. That's about as fast as attic paybacks get.
The breakdown behind the number
The estimated savings split roughly $802/year heating, $348/year cooling. Out of every 100 US counties tracked here, Yell County's savings potential beats roughly 28 of them. Within zone 3 specifically, it ranks 162nd of 690 counties by estimated savings. Arkansas averages $1,185/year across the counties tracked here; Yell County comes in 3% lower.
The climate data behind this
The heating and cooling degree days behind this estimate — 3,022 HDD and 2,185 CDD (base 65°F, 1991-2020 normals) — come from NIMROD DAM, AR US, the nearest NOAA station with published normals, 14.4 miles from Yell County's center. That combined heating-and-cooling load ranks Yell County 2173rd nationally by total degree days — the 31th percentile. Yell County falls in DOE's moisture regime A (humid), a detail that affects vapor-barrier recommendations more than the R-value target itself.
The smaller top-up scenario
If Yell 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 $155/year — payback about 10.5 years. This one is a genuine toss-up, not a clear yes.
Getting it done in Yell 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 Yell County, not a bid - contractors typically charge a $600 minimum regardless of job size.
Nothing here is a guess
Every figure on this page traces to DOE/IECC climate zones and NOAA degree-day normals, documented in the methodology guide. The guide to what R-value actually means explains why R-49 is the target here specifically.