Wabash County, IN Insulation Payback
Wabash County, IN: what topping up your attic actually costs
DOE classifies Wabash County as climate zone 5, cold — cold enough that heating, not cooling, is what decides the bill. Its recommended attic R-value for bare joists is 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 $1,712/year saved. That's about as fast as attic paybacks get.
Where the savings come from
The estimated savings split roughly $1,562/year heating, $151/year cooling. Out of every 100 US counties tracked here, Wabash County's savings potential beats roughly 67 of them. Within zone 5 specifically, it ranks 465th of 745 counties by estimated savings. Indiana averages $1,634/year across the counties tracked here; Wabash County comes in 5% higher.
Wabash County's actual weather, not a national average
The heating and cooling degree days behind this estimate — 5,841 HDD and 938 CDD (base 65°F, 1991-2020 normals) — come from WABASH, IN US, the nearest NOAA station with published normals, 3.9 miles from Wabash County's center. By total degree days, Wabash County sits at the 67th percentile nationally. Wabash 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
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 $250/year saved (~9.1-year payback). This one is a genuine toss-up, not a clear yes.
Getting it done in Wabash County
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 Wabash 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.