Jefferson County, OH Insulation Payback
Jefferson County attic insulation, by the numbers
Jefferson County, Ohio is zone 5 under DOE's climate map (Cold), which means cold enough that heating, not cooling, is what decides the bill. An uninsulated attic there should be built up to R-60. For an attic around 1,000 square feet, closing the gap from R-2 to R-60 costs around $3,480 and saves an estimated $1,676 a year — payback in roughly 2.1 years. Topping up the attic pays for itself fast here.
Heating vs. cooling in Jefferson County
Split it out and it's roughly $1,558 a year on the heating side, $118 on cooling. By estimated insulation savings, Jefferson County lands in the 64th percentile nationally. Zone 5 alone covers 745 counties in this dataset, and Jefferson County comes in 526th by savings. Ohio averages $1,669/year across the counties tracked here; Jefferson County comes in 0% higher.
Where these numbers come from
NOAA's STEUBENVILLE, OH US station, 7.3 miles from Jefferson County, supplies the 5,828 HDD and 733 CDD this estimate runs on. Combined heating and cooling load puts Jefferson County in the 63th percentile of this 3,162-county dataset. One local detail the R-value alone won't tell you: Jefferson County sits in moisture regime A (humid), which can affect the vapor-barrier choice.
Already have some insulation?
If Jefferson County's attic already has 3-4 inches of old insulation (about R-11) rather than bare joists, the recommended target drops to R-49. That smaller top-up costs around $2,280 and saves an estimated $244/year — payback about 9.3 years. Call this borderline rather than a clear win.
Next steps for a Jefferson County attic
Actual quotes will vary by attic access, existing debris, and whether the job needs air sealing first. Treat the $3,480 figure above as a planning number for Jefferson County, not a bid - contractors typically charge a $600 minimum regardless of job size.
Where these figures come from
Jefferson County's R-60 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-60 is the target here specifically.