Hardin County, OH Insulation Payback
Hardin County, OH: what topping up your attic actually costs
Hardin County sits in IECC climate zone 5 (Cold) — cold enough that heating, not cooling, is what decides the bill. For a currently uninsulated attic, DOE and ENERGY STAR recommend building up to R-60. Going from R-2 to the recommended R-60 costs roughly $3,480 installed for a typical attic (about 1,000 sq ft), and pays for itself in about 2 years at an estimated $1,754/year saved. That's about as fast as attic paybacks get.
Heating vs. cooling in Hardin County
The estimated savings split roughly $1,612/year heating, $143/year cooling. Out of every 100 US counties tracked here, Hardin County's savings potential beats roughly 69 of them. Within zone 5 specifically, it ranks 381st of 745 counties by estimated savings. Ohio averages $1,669/year across the counties tracked here; Hardin County comes in 5% higher.
The climate data behind this
The heating and cooling degree days behind this estimate — 6,028 HDD and 888 CDD (base 65°F, 1991-2020 normals) — come from KENTON, OH US, the nearest NOAA station with published normals, 3.1 miles from Hardin County's center. By total degree days, Hardin County sits at the 70th percentile nationally. Hardin 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 Hardin 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 $256/year — payback about 8.9 years. This one is a genuine toss-up, not a clear yes.
Getting it done in Hardin County
Get more than one quote before committing. Attic access and any needed air sealing move the price around, and most contractors won't take a job below roughly $600 regardless of size - worth asking upfront given Hardin County's estimated $1,754/year on the line.
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.