Adams County, OH Insulation Payback
Adams County, OH: what topping up your attic actually costs
Adams County, Ohio is zone 4 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-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 $1,628 a year — payback in roughly 2.1 years. That's about as fast as attic paybacks get.
The breakdown behind the number
The estimated savings split roughly $1,503/year heating, $125/year cooling. Out of every 100 US counties tracked here, Adams County's savings potential beats roughly 61 of them. Within zone 4 specifically, it ranks 28th of 825 counties by estimated savings. Ohio averages $1,669/year across the counties tracked here; Adams County comes in 2% lower.
The climate data behind this
The heating and cooling degree days behind this estimate — 5,620 HDD and 778 CDD (base 65°F, 1991-2020 normals) — come from RIPLEY EXP FARM, OH US, the nearest NOAA station with published normals, 17.5 miles from Adams County's center. By total degree days, Adams County sits at the 60th percentile nationally. Adams County falls in DOE's moisture regime A (humid), a detail that affects vapor-barrier recommendations more than the R-value target itself.
Already have some insulation?
A shallower starting point changes the math: with R-11 already down, only the gap to R-49 needs filling, at roughly $2,280 for an estimated $237/year saved (~9.6-year payback). This one is a genuine toss-up, not a clear yes.
Next steps for a Adams County attic
Real bids depend on how easy the attic is to reach and whether old insulation needs removing first, so treat $3,480 as a starting estimate for a Adams County job, not a quote. Expect at least a $600 minimum charge from most contractors.
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-60 is the target here specifically.